As I was discharging the patient to rehab, she described the municipal EMS crew that had initially brought her from home with a fractured hip. “It took 20 minutes to get here,” she said, “and my house is only a mile down the road.”
Annoyed? Hardly. She couldn’t have been happier.
It’s well and good to be a really great driver. (In fact, if you ask me, it’s just about an essential skill.) Good drivers can push the efficiency of the “smooth vs. fast” curve, and this is important, because we want it both ways. But every now and then, you get a patient who simply needs to be transported at the distant, snowy left side of that balance. A patient who almost can’t be moved at all.
These are the patients with unfixated hip fractures. Or grim decubitus ulcers. Perhaps terrible, chronic back pain. Anybody who’s doing okay at rest, but experiences agony upon uncontrolled movement. Some of these are emergency patients, some are routine transfers, and a few of the latter may even be repeat customers while their problems gradually heal (or never do). Whoever they are, they’re patients you wish you could transport by either teleporter or hovercraft.
You touch them, and they scream. You move them, and they scream. You look at them vigorously, and they open their mouth to get ready to scream.
I can’t help you with extrication or getting them onto the stretcher; that’s your problem (or at least another post). But once you hit the road, there’s a solution. All it takes is patience. Here’s the formula:
Move to the rightmost lane.
Throw on your 4-way hazards.
Drive about 5 MPH.
Avoid every single bump.
Please understand what I’m saying here. I already know that you drive pretty well; you try to give your partner a great ride, and that usually means driving a little slower than you would in your personal vehicle. But for these patients, that’s still too rough. So you slow it down more, so you can pick a better path between cracks and potholes, and when you do hit a bump its effects are less dramatic. And that’s still too rough. So you slow, slow, slow it down. As slow as you need in order to completely negate the bumps, bounces, and turns. Your actual speed will depend on the quality of the road; on beautifully smooth, brand new city roads, you may be able to eke out 10, even 20 MPH. On particularly bad roads, with irregularities that look like speedbumps — or come to think of it, when you’re traversing actual speedbumps — you may literally be crawling along at about 1 MPH.
In most cases, you will probably find yourself driving with the brake pedal rather than the gas pedal. In other words, you’ll be lucky if your foot ever touches the accelerator; most of the time, you’ll “accelerate” by easing off the brake a bit more, and decelerate by pushing it harder. (Remember to ease in and out; in smooth driving, everything happens slowly!)
Obviously, this is only appropriate when you’re in no particular hurry. Critical patients need to move a little faster. Furthermore, your ability to execute this maneuver is somewhat dependent on how far you’re actually driving; the shorter the trip, the better, because a long trip taken at 1 MPH will end up lasting all week. The prototypical transport begging for the slow ride is the stable hip fracture from the nursing home, heading to the ED across town — not too far, but with nasty urban roads the whole way.
Other tips:
Other drivers will probably not be thrilled at this behavior. As long as there are multiple lanes, stay to the right, and they can go around. If you’re stuck on a one-lane road for a while, periodically try to pull aside and let vehicles pass.
Although it may seem smart to throw on your emergency lights, most drivers expect an ambulance running hot to be moving faster than traffic, not slower, so it generally causes more confusion than it’s worth.
At this speed, you have some real options for maneuvering. Mentally trace the double track that your wheels will describe on the ground ahead (remembering that your rear wheels may be slightly fatter, if you have “dualies” back there), and choose a route that places that path between the worst bumps. You can go left, you can go right, or you can straddle them.
When crossing a wide, straight barrier, such as a speed bump, railroad track, or the threshold of a ramp, try to “square up” first, striking it perpendicularly so you’ll make contact with left and right tires simultaneously. The back-and-forth rocking created by hitting it diagonally, resulting in asymmetrically bouncing across 1-2-3-4 wheels, is miserable no matter how small the actual bump.
Remember that the pain level of many unstable musculoskeletal injuries can be improved by smart, snug splinting. If you have time to drive like this, you probably have time to splint well — which may allow you to drive a little faster!
Although this may be obvious: paramedics, remember that you carry analgesics for a reason; Basics, remember that paramedics are available.
Pulling this off takes a little confidence, and a healthy dose of not giving a damn. And there will occasionally be roads or driving conditions that make it actually unsafe. But short of that, no matter how many stares you get, it’s a perfectly sensible maneuver, and one of the very best things you can do for these patients.
Update: Our friends at EMS 12 Lead have put together a “sister post” to this one, with further discussion and some additional clips. Check it out!
Although we’ve talked about the fundamentals of good CPR before (and then again), the fact remains that the first step of any resuscitation is recognizing the presence of cardiac arrest. In fact, failure to do this in a timely fashion is a common problem at all levels of healthcare: because these situations don’t happen often, we are reluctant to accept when they’re happening now. (Real emergencies don’t come heralded by a change in soundtrack.) The result is delays, often for many minutes, before anybody initiates CPR and attempts defibrillation. We can’t just point fingers at the bystanders and lay providers — it’s also the EMTs, the nurses, even the doctors doing this. “Is that a pulse?” we muse. “I think there’s a pulse. Here, come feel.”
It’s true that cardiac arrest, at least in the early stages, is often not easily distinguished from other maladies (such as unconsciousness due to seizure or drugs). A few clues may be immediately obvious, such as pallor of the skin if some time has passed, or if a bystander actually witnesses the patient suddenly collapse. However, in the end, the way to make this call quickly and reliably is to simply follow the algorithm. You’re not the first person to deal with this, and the American Heart Association has spent years simplifying the decision process — because the goal isn’t to eventually “figure it out,” the idea is to immediately recognize it and start lifesaving measures within seconds.
Is the patient responsive? (No; they appear unconscious, and make no response whatsoever to painful stimuli.) Are they breathing normally? (No; they’re not breathing, or merely performing agonal, “gasping” breaths.) Is there a carotid pulse? (No, no pulse is palpable within a few seconds.) That’s good enough for us. Start pushing on their chest and don’t stop unless it’s absolutely essential — and the only things that are absolutely essential are checking their cardiac rhythm (just a few seconds) and delivering a shock (less than a second).
We’re going to look at a number of examples of real-life cardiac arrest (or “codes” in the usual lingo). As a rule, the actual CPR that you’ll see here is of relatively poor quality. This is due to a number of factors, but primarily it’s because 1) Many of these clips are five, ten, or fifteen years old, from a time when CPR was taught and practiced differently; and 2) Even today, many people do not perform good CPR.
So: focus on the patients. Watch how they present, their breathing, their skin, their responses to the interventions. Watch the challenges that the providers face as far as managing the patient and the environment. Watch how their approaches differ by region, circumstance, or personal preference. But for the most part, do not do what they are doing. We’ll watch a couple examples of really good CPR at the end so you know what to strive for.
We’ve linked this before, and for good reason; it’s one of the best videos I know of a real code. This is older CPR, with less emphasis on compressions and more on ventilation, but otherwise fairly true to the textbook. Notice the early “activation” of EMS, and the brief pulse check. Notice how rather than trying to “one-man” the BVM, they take advantage of the many available hands, allowing one person to hold the mask and one to squeeze the bag. Notice how they quickly dry the chest for the AED without being obsessive about it. As for the compressions, nowadays we would like to see them faster and deeper, with fewer and briefer pauses.
In the patient, watch the spastic, gulping movements of the mouth and tongue; this is agonal breathing. Notice also the decorticate posturing of the upper body, suggesting neurological dysfunction. Finally, notice how (after the third round of CPR + defibrillation), he begins to breathe spontaneously, with obvious chest rise, and this is clearly different from the prior agonal respirations.
(watch through 8:45) Despite the numerous pauses for commentary, this is also good. The initial compressions are rapid — a little too rapid, which is okay, but not deep enough, and if they were deeper they would likely be at a more reasonable rate. The second compressor goes deeper, but does not recoil fully at the top. The third (male) rescuer gives perhaps the best compressions, but notice his elbows — although pushing hard and deep, he allows his elbows to bend slightly each time. This is a very common error in otherwise skilled compressors, and is a good way to fatigue yourself quickly. Make a conscious effort to lock the elbows out completely, allowing you throw your full weight behind each compression rather than “pressing” with the arms. Notice also how frequently the rescuers stop compressions for one reason or another. Chest compressions need to build upon each other for several compressions before you’re producing anything like the coronary perfusion pressures you want to see; repeatedly stopping and starting sacrifices all your hard work.
In the patient, notice the pallor (paleness) of his skin, and the total lack of tone (limp flaccidity) of his body. Notice how he convulses with the shock, and how his chest rises and expands with ventilations. Finally, notice how his abdomen recoils outward in a seesaw manner with each downward compression of the chest.
(watch through 7:10) This is a chest pain patient that codes on camera. Despite the low image quality, notice how poorly he immediately presents; he is obviously fatigued, wan, and struggling with some sort of pain or other internal distress. Upon attempting to stand, he loses consciousness and demonstrates agonal respirations (listen to the heavy snoring). They ask if he has a history of seizures; a substantial number of cardiac arrests are initially mistaken for seizures, and may present with seizure-like activity (such as foaming of the mouth). There is obvious difficulty with compressions due to the high position of the stretcher. Bubba was very fortunate to arrest in the immediate presence of paramedics.
(watch through 3:43) Notice again the initial hesitation due to bystanders believing a seizure is occurring. These compressions have the kind of violent depth we want, although at about half the rate. Notice again the slight arm bend.
A chest pain patient who deteriorates into a full arrest while on camera for a UK documentary. Depicts a good portion of the code.
[Added 5/8/13 — ed.]
(watch until the credits)
ED footage of EMS bringing in a code. Shows the practice of “code surfing,” where a rescuer rides the stretcher to provide ongoing compressions during movement — a great idea if you can do it safely and effectively (it helps to use someone small!) Notice how fast some of the compressions are performed, but it’s tough to reach good depth at those rates, particularly when the arms aren’t held straight. Although the captions note that the patient had ROSC, it’s extremely unlikely that he survived to discharge; when patients are transported without achieving ROSC in the field, they almost never walk out of the hospital. Cardiac arrests are worked on scene; transport without a pulse is simply giving up, unless you have good reason to think there’s a reversible etiology of arrest that the hospital can address.
[Added 8/21/12 — ed.]
(watch through 12:05, or stay for some bystander interviews) Another near-drowning. Decent-looking compressions and a reasonable attempt to minimize interruptions, although notice the pauses for intubation and at various other times. Unknown outcome.
(watch through 2:25) This is a volunteer crew from AMR’s disaster response team in Haiti. There seems to be initial confusion about whether the patient is pulseless or merely apneic, hence the initial focus is on the airway; nowadays we would frown upon interrupting compressions for intubation, and the bagging after the tube has been placed is far too fast (every 6-8 seconds only, please). The teamwork is good, and return of spontaneous circulation (ROSC) is achieved after a few minutes. Notice the decision to defer a blood pressure measurement, since the patient has a strong radial pulse — an indicator of a decent pressure, if not an exact number. The patient does have fixed and dilated pupils, indicating a probable poor neurological status.
Keep watching only if desired; the patient is transported to the field hospital, where she rearrests, and the doctor there halts resuscitation efforts.
http://www.youtube.com/watch?v=0CimS2HZKyQ&t=1243
(watch through 23:50) This is a neonatal resuscitation immediately following a field delivery of twins; one infant is apneic following birth. BVM ventilations and compressions are performed, as well as an aborted attempt at intubation; however, in the end the neonatal fundamentals of warming, suctioning, stimulation, and supplemental oxygen end up effectively reviving the child.
[will not embed; click through to view video then return] Another infant resuscitation, this one in the ED. Excellent footage of compressions, ventilation, and the typical hubbub of a code, as well as an IO (intraosseous) line that infiltrates and the use of ultrasound to assess for cardiac function during PEA.
http://www.youtube.com/watch?v=oNv848sBbRY
CPR on a near-drowning. A fine example of the typical poor quality of bystander compressions; notice the negligible depth and general uncertainty about whether to intervene.
A collapse at a sporting event. There is no backstory available on this, so it may not be a true arrest, but if so it would be consistent with commotio cordis, when a blow to the chest (such as a punch) causes an arrhythmia (due to an R-on-T induced by the physical blow; this is the evil brother of a precordial thump, with the opposite effect). This type of arrest has extremely good prognosis for recovery if immediate CPR and defibrillation is performed, since there may be little to no underlying disease; it’s a healthy young patient who simply got whacked wrong.
http://www.youtube.com/watch?v=A-GM301zW1A&t=2
(watch through :38) Some brief miscellaneous footage of an arrest post-drowning, with a few pretty good compressions.
http://www.youtube.com/watch?v=bIYywQioAb8&t=5
(watch through :57) Another near-drowning. Nice compressions. Notice the pallor and lack of tone.
https://www.youtube.com/watch?v=sjoKuBTvxvU&t=61s
[Added 10/11/13 — ed.]
This is clearly an old video, although it’s not clear from what year. Regardless, it’s a great opportunity to list the things you’d do differently today. Since we know that the keys to a successful resuscitation are immediate, deep, fast, uninterrupted compressions, along with rapid defibrillation, do you think this patient had a good outcome? How many of the interventions they performed instead of that stuff are still recommended care? If you were on that scene, would you be an advocate (some might say a CPR Nazi) to ensure that things were done properly?
Finally, let’s look at a couple examples of really spot-on, perfect resuscitation. Since perfection is rare in life, and having a camera in the room is even rarer, these will be simulations.
Click here for a teaching video from the Austin/Travis County medical director’s office. It demonstrates their “pit crew” model, where each member has a designated role, and each action is carefully crafted to match the latest evidence for best practices to promote survival. Notice how compressions begin almost immediately, once the rescuers have noted a lack of responsiveness, breathing, and pulse — and compressions stop for almost nothing, no matter what else is happening. (I would call these compressions very good, but a bit fast and shallow.) Secondary tasks like bagging can happen in the background. This crew does stop compressions while the AED charges, while I personally prefer to compress during this interval (between analysis and shock); the longer you delay between last compression and delivery of the shock, the less chance of getting a pulse back.
(Watch from 2:45 onward) This is the model from Salt Lake City Fire, portraying a highly progressive model. Aside from the general concepts of “compression-centered” resuscitation and the pit crew model, they’re also eliminating pauses for rhythm analysis (using the “see-through” filter on the Zoll monitors, which removes CPR artifact) and even for defibrillation (shocking without taking hands off the chest, which has not been proven safe, but generally seems to be). In other words, there’s essentially no interruption in compressions until there’s evidence of a perfusing rhythm. Notice the compression technique, where knuckles remain against the chest to lock-in the hand position, but the heel of the palm comes off at the top, ensuring full recoil. Beautiful stuff.
There you have it, folks: what dead people look like, and what it looks like when we try to bring them back. Typically the process is chaotic, and we do our best, but often drop the ball on what’s important. Nobody’s perfect, but we can direct our focus toward the pieces that matter the most, and this lets us “streamline” our efforts away from the distractions and toward the critical elements. Recognize the problem early, compress hard, deep, and fast, and don’t stop for anything unless it’s defibrillation. Ain’t so hard, is it?
Sincere thanks to James Oz (Melclin) for assistance with compiling these video clips.
Bringing order to chaos. It’s hard to suggest a more important skill for an EMT.
Emergencies are chaotic. Heck, even non-emergent “emergencies” are chaotic. The nature of working in the field is that most situations are uncontrolled. Part of our job is to bring some order to it all, sort the raw junk into categories, discard most of the detritus, and loosely mold the whole ball of wax into something the emergency department can recognize. Call us chaos translators. This is important stuff; it’s why the House of God declared, “At a cardiac arrest, the first procedure is to take your own pulse”; and it’s why we walk rather than run, and talk rather than shout.
The thing is, it’s not just those of us on the provider side that need this. Oftentimes patients need it too. Imagine: every other day of your life, you’re walking around without acute distress, in control of your situation and knowing what to expect. Today, something you didn’t anticipate and can’t understand has ambushed you — a broken leg, a stabbing chest pain — and you don’t know how to handle that. So you called 911 to make some sense of it all.
Most ailments are side effects of other problems: the fear of going mad, the anxiety of being so alone among so many, the shortness of breath that always occurs after glimpsing your own death. Calling 911 is a fast and free way to be shown an order in the world much stronger than your own disorder. Within minutes, someone will show up at your door and ask you if you need help, someone who has witnessed so many worse cases than your own and will gladly tell you this. When your angst pail is full, he’ll try and empty it. (Bringing Out the Dead)
With some patients, this is more true than with others. With some patients, there may be little to no underlying complaint; there is mainly just panic, a crashing wave of anxiety, a psychological anaphylactic reaction to a world that is suddenly too much for them. Particularly in those cases, but to a certain extent with everybody, bringing that patient to a place of calm may be exactly what they need. I have transported patients to the hospital who clearly and unequivocally were merely hoping to go somewhere that things made sense.
The burned-out medic likes to park himself behind the stretcher, zip his lip, and allow things to burn out on their own. This may sound merciless, but there is a certain wisdom to it.
We are very good in this business at escalating the level of alarm. Eight minutes after you hang up the phone, suddenly sirens are echoing down your street, heavy boots are echoing in your hall, and five burly men are crowding into your bathroom. We have wires, we have tubes, we have many, many questions. What a mess. So sometimes, once we’ve finished ratcheting everything up, it behooves us to pause, step back, and make a conscious effort to turn down the volume.
Take the stimuli of the environment, of the situation, and dial it way back. One of our best tools is to simply get the patient away from the scene — the heart of the chaos — and into the back of the ambulance, where we’re in control. It’s quiet, it’s comfortable, and there is less to look at. Move slowly, consider dimming the lights, and whenever possible avoid transporting with lights and sirens. Demonstrate calm, relaxed confidence, as if there’s truly nothing to be excited about. Some patients with drug reactions, or some developmental or psychological disorders (such as autism spectrum), may be absolutely unmanageable unless you can reduce their level of stimulation. Just put a proverbial pillow over their senses.
If you’re stuck on scene, try to filter out the environment a little. If bystanders or other responders (such as fire and police) are milling around, either clear out unnecessary personnel or at least ask them to leave the room for a bit. Make sure only one person is asking questions, and explain everything you do before you do it.
There’s a human connection here, and if you can master it, you can create an eye of calm even as sheet metal is being ripped apart around you. Look directly into your patient’s eyes, and speak to them calmly, quietly, and directly. Take their hand. Use their name, and make sure they know yours. Narrate what’s going on as it occurs, describe what they can expect next, and try to anticipate their emotional responses (surprise, fear, confusion). If they start to lose their anchor, bring them back; their world for now should consist only of themselves and you. To achieve this you need to be capable of creating a real connection; it is their focus on you that will help them to block out everything else. Done correctly, they may not want you to leave their side once you arrive at the hospital; you’re their lifeline, and it may feel like you’re abandoning them. Try to convince them that the worst is over, and they’ve arrived somewhere that’s safe, structured, and prepared to make things right. They’ve “made it.”
Applying these ideas isn’t always simple, and learning to recognize how much each patient needs the volume turned down requires experience. But just remember that no matter who they are, no matter what their complaint, most people didn’t call 911 because they wanted things more chaotic. Try to be a carrier of calm.
It’s not very exciting, which is one reason we don’t seem very impressed by it in EMS. Also, I have a theory that most prehospital providers (probably most people in general, with the possible exception of those who have taken a microbiology course and seen gross things) don’t really, on a visceral level, believe in germs.
Whatever the reason, we really drop the ball on this one. Walk into your nearest Mega-Lifegiving Medical Center, where the best and brightest are using the latest and greatest methods to save lives every day, and look at the hand sanitizer mounted to every wall. Look at the giant signs reminding everyone to clean their hands, cover their nose with their elbow, and lock themselves into an airtight bubble if they think they’ve got the flu. Watch nurses exit patient rooms wearing full-body gowns, eyeshields, respirators, and gloves. Then watch the ambulance crew wander in wearing week-old uniforms, touch everything, scoop up the patient like a sack of potatoes, heave him onto a suspiciously gray and drippy stretcher, and do just about everything but lick the doorknobs.
Admittedly, one difference between us is that the hospital makes its money in part based on metrics that include the number of nosocomial (healthcare-acquired) infections it sees. But maybe that’s a good thing. If our billing started depending on how many patients we infected, suddenly we might start believing in germs. Just a prediction.
Why should we care about universal precautions? For one thing, to stay alive. Not long ago I transferred a nurse between facilities. She was being admitted to a medical floor for a massive MRSA-colonized abscess on her cheek; it had been surgically incised and drained, and she was now beginning a course of antibiotics and further care. The cause? She’d idly scratched her face one day at work.
For some reason, I find this argument unconvincing to many of us EMTs and medics. I suspect that, as usual, we consider ourselves immortal. Whatever the case, if you find it compelling, go with it, but otherwise, try its mirror image: precautions keep your patients alive.
You may be a romping, stomping, deathless badass. You’re 18, you take your vitamins, and you’ve never been sick in your life. Staph tells stories about you to scare its children. But your patient is elderly, takes immuno-suppressant drugs, and has leukemia coming out of his ears. How’s his immune system? Do you want to find out?
He’s the reason that the hospitals have become so paranoid about cross-contamination — because this guy is right across the hall from a guy infected with Ultra-Virulent Pan-Resistant Skin Melting Brain Bleeding Disease, and it’s very, very easy for staff to touch one of them, then touch the other. Or touch the doorknob, which someone else touches, who then touches… etc. This is why hospitals are such dangerous places for sick people.
That’s why I’m not particularly paranoid about germs in my everyday life, but I try to bring a little paranoia to work with me. Because our patients may pass through many medical hands, but most of those hands are now climbing aboard the sanitation train. Yet the system is only as good as the weakest link, and especially when it comes to interfacility transfers, EMS may very well be that link. We wear the same uniform from patient to patient (if not from day to day), we don’t always replace linen or clean the stretcher, and equipment — never mind the ambulance itself — gets decontaminated far less often than after every call.
And perhaps, due to the nature of our work, some of this is necessary. We work in a more difficult and less controlled environment than the ICU, and maybe we can’t maintain exactly the same standards. (This argument is less convincing when it comes to non-emergent, routine transfer work, though — particularly when a patient’s infectious status is already known.) However, there are some things we can do that are easy, routine, and when introduced into our habits, create essentially no added work.
Number one is hand hygiene.
Whenever possible, I wash my hands after every call. It’s no burden. If I’ve delivered a patient to a hospital or other facility, I simply find the restroom (which I probably want anyway, because my bladder is the size of a grape) and wash. Many times a sink may even be available in the patient’s room.
The proliferation of waterless hand sanitizers, usually alcohol-based foams or gels, has given us an alternative to this. When there aren’t any sinks, it’s the only way. But I don’t like ’em. They leave a residue that’s palpable, and which smells — and if you’re planning on eating anything, tastes — foul. They are also, in many cases, literally less effective. Although alcohol and similar agents kill most microorganisms, they don’t kill all of them (Clostridium difficile and the norovirus being notable exceptions), and like all contact sanitizers, they disinfect but do not clean. Any gross dirt, grease, or other contaminants on your hands (and this includes particles that are “macro”-sized but still too small to see) can cover or encase microbes, preventing antiseptics from reaching them. Unlike contact sanitizers, washing with soap and water is an essentially mechanical process: you are physically rinsing contaminants away from your skin and down the drain. (All that the soap does is “lubricate” hydrophobic particles to make them easier to rinse off.) Some soaps now are “antibacterial,” meaning they contain a germ-killing substance as well, but it’s not clear that these do any better of a job for routine purposes, and they may contribute to drug resistant strains. (They do, however, leave a microstatic coating on your hands afterwards, which helps to keep things clean a little longer.) Either way, most soap in healthcare facilities does contain an antimicrobial agent. In any case, I use the waterless sanitizers only when soap and water aren’t available.
Proper handwashing isn’t hard, but since it requires mechanically washing each portion of skin, it helps to have a system or you can easily miss spots. If you’re scrubbing in for surgery or a similar sterile procedure, you’ll need a much more stringent method than I use — but you’re not going to practice that ten times a day. So I use an approach that hits essentially the whole hand with as few steps as possible. Once you have the basic pieces in place, you can then do it fast for a routine wash, or spend much longer on each surface if you know that your hands are funky.
Here’s how I like to wash. It may seem elaborate or awkward at first, but with a little practice it’ll become second nature.
The same method can be used with waterless sanitizer. In the past, frequent washing tended to dry out your skin and lead to cracks (great windows for infection), but nowadays most soap in the hospitals contains moisturizer to prevent this.
A few points to remember:
Washing is a mechanical process! Mere contact with soap doesn’t clean anything. If you didn’t rub an area of skin at least briefly, you didn’t clean it.
Use warm water. Cold is a less effective solvent, and hot abuses your hands.
If you’re also using the bathroom, consider washing before and after to avoid contaminating your… important areas.
Drying with a towel is part of washing: it helps physically clean the hands, and wet hands are microbe-magnets.
Although I don’t religiously practice the turn-off-the-water-with-the-towel technique, if you know that your hands were grossly contaminated, it’s a good idea; remember that whatever was on your hands before you washed is probably now on the knob.
In an ideal world, we probably wouldn’t wear watches. In the real world, just try to be aware that it’s a great shelter for contaminants, and find a way to clean it (watch and band) regularly.
Now that we have a pretty good idea of how shock works, what does it all mean for our treatment in the field?
Much like cardiac arrest and some of the other “big sick” emergencies, there are really a couple essential interventions we need to execute, maybe a couple others that aren’t a bad idea, and beyond that, our main job is to ensure that we don’t kill our patient by wasting time doing anything else.
Step 1: Control the bleeding
As we emphasized ad nauseam, the number one goal with the bleeding patient is to stop the bleeding. No need to beat this to death, but just remember: if you can control the bleeding, yet don’t get much of anything else done, you’re doing absolutely fine.
Step 2: Transport to surgery
In most significant cases of hemorrhage, definitively controlling the bleeding will require surgical intervention. We don’t do surgery, but we do set the stage, which is why it’s essential for us to know what we’re doing. Get thee to a trauma center, and quickly!
Can other hospitals perform surgical intervention? Sometimes. Maybe. A world-class trauma surgeon might happen to be in the building for a conference. Maybe the operating room is between scheduled procedures and happens to be clean and available. But the point to a trauma center is that it’s guaranteed to have certain resources available, and that’s the kind of place we want to bring these patients. 9 times out of 10, if we transport them elsewhere, they’ll simply end up being transferred back out to the trauma center anyway, making the whole exercise essentially one very long transport. Can a small community hospital help stabilize the patient before surgery? Sure — but as we know, everything else is a distant second priority to bleeding control. Even transfusing blood may need to be done sparingly until the leak has been corked.
What about ALS? Do these patients need paramedics? Now, if they acutely decompensate and need airway management or other interventions you can’t provide (or have other issues like pneumothorax), then ALS-level care would be valuable. But outside of that, and even granting that to a certain extent, a medic unit is not going to stitch up the bleeding, and meeting them will certainly delay transport to surgery at least by a few minutes. True, they’ll be able to initiate IV access that can be used for blood later, but in most cases this takes mere seconds at the ED (where there’s plenty of room, good lighting, and ample personnel) — and prehospital IVs will sometimes be replaced anyway.
Step 3: Promote oxygen delivery
Okay, you shock technician, now what?
Can we talk about coagulopathy of trauma — aka the “deadly triad”?
Bleeding control is the priority, right? And bleeding control requires clotting. But there’s a set of conditions guaranteed to obstruct clotting, and three of them are almost always present during hemorrhagic shock.
One is hemodilution. When we top off our bleeding patients with non-blood fluids, as we’re so fond of doing, it dilutes both oxygen-carrying capacity (since we’re not adding red blood cells) and clotting speed (since we’re not adding platelets or clotting factors). So this one’s our fault, and can be readily avoided by simply resisting the urge to replace blood with salty water.
One is acidosis. If you’ve been paying attention, you know that acidosis tends to develop in shock due to anaerobic cellular activity, and can be further encouraged by overzealous fluid administration. Is this the end of the world? (After all, a little acidosis might even improve oxygen delivery by shifting the oxyhemoglobin dissociation curve.) Well, the trouble is that acidosis also leads to coagulopathy. According to some in vitro studies, in fact, even mild acidosis can precipitously decrease platelet aggregation, and in significant acidosis platelets won’t activate at all. Zero.
The last is hypothermia. Not only do cold patients have poor oxygen delivery and other problems, they clot poorly; low temperatures cause coagulopathy too.
Now, we can’t do much about the initial trauma. We can discourage acidosis by limiting fluid use, and ensuring that ventilations remain adequate. What about hypothermia? Do our trauma patients get cold? What would you expect when you take someone who’s bleeding, strip them naked on a cold sidewalk, pump cold saline into their veins, and chuck them into an ambulance carefully heated to your comfort?
Keep your trauma patients warm. This is not about human kindness or TLC, this is a serious and important intervention for shock. Hypothermia is great for cardiac arrest, it may be beneficial in some other scenarios, but it is not good for bleeding people.
How about supplemental oxygen? Well, I suppose so. In the patient with adequate respirations, it is doubtful that “topping off” their PaO2 will affect them appreciably; but as they begin to decompensate, they’ll need all the help they can get.
Positioning? Remember how big a deal they made about the Trendelenburg position in school — how it pulls blood from the lower extremities into the core? And ever noticed how it’s not exactly our number one emphasis in the field? Trendelenburg has little real evidence supporting it, and the bulk of what does exist suggests its effect is fairly minimal — it moves only a little blood, the effect is transient, and the body’s compensation can actually cause a paradoxical reduction in core perfusion. Mostly these studies were done in healthy people, so it’s possible that our shocky patients do get a little benefit — and one supposes that if things are dire enough to need every last cc of blood, you can give it a shot. But typically it won’t do you too many favors. (I certainly wouldn’t advise propping the patient bolt upright, though!)
Step 4: Supportive care
Supportive care means battling secondary problems as they arise. It doesn’t mean waffling over nonsense while your patient bleeds out.
If the patient’s airway is compromised, or you have legitimate reason to think that it may become compromised, then it should be managed. If they’re breathing inadequately, they’ll need assistance. Beyond that, any other care should only occur after you’ve stuck a cork in the bleeding and started rolling toward the guys with knives. Cardiac fiddling, pain management, splinting or minor bandaging — these should take place en route or simultaneous to other care, if at all. Shock kills people; is a nice sling-and-swath going to save them?
Spinal immobilization? It’s been pretty definitively shown to hurt rather than help in penetrating trauma. What about combined blunt and penetrating? There’s no evidence that it helps and some evidence that it’s harmful. We have no reason to think that tying people to boards does anything good, but we do know that wasting time here does everything bad. So if your local protocols demand immobilizing these patients, I won’t tell you otherwise — but please, at least, try and hurry.
That’s it, folks. Let’s wrap it all up next time by talking about recognizing the beast.
Key points:
Stop the bleeding to the greatest extent possible in the field.
Immediately and without delay transport to a facility capable of emergency surgery.
Provide other supportive care as necessary, without delaying #1 and #2.
Maximize oxygen delivery with supplemental O2, keeping the patient warm, and consider the Trendelenburg position.
Minimize delays created by any and all non-essential care.
The first, the last, and always the most important answer to the shock progression is to fix the underlying cause.
To illustrate the principles, let’s focus for the moment on traumatic shock caused by hemorrhage — you were injured, began to bleed, and now you’ve got less intravascular blood. What should we do about that? Stop the bleeding? Give you more blood?
If you’re caught in a sudden rainstorm, should your first reaction be toweling yourself off, or getting under shelter?
Both will be needed, but one will be futile without the other.
Shock caused by bleeding is cured by stopping the bleeding. The body will try to do this on its own, but definitively, in significant trauma, this is almost always accomplished through surgery. Trauma is a surgical disease; its medicine is an operating room, sutures, and cautery.
Prior to that, just about anything we can do to stop or slow the bleeding is worth doing. Direct pressure on an injury is often very effective. Pressure slows the flow of blood and promotes the clotting process (by creating stasis and degranulating platelets). It most often fails when it can’t be properly applied — such as when the bleeding is internal, as with a lacerated abdominal organ.
Tourniquets for extremity injuries are perhaps the most definitive pre-surgical intervention of all, and despite years of demonization they have been shown to be generally effective in most cases, with relatively minor risks. More discussion of tourniquets will come another day.
To contrast, consider the counter-example of septic shock. The initial insult there is an infection. How do we treat infection? Antibiotics. Early antibiotic therapy is so important for the sepsis patient that the time from hospital arrival to administration of antibiotics is recorded, and measured in minutes.
The takeaway:
The prime directive in correcting shock is reversing the original cause; this takes precedence over any other treatment.
In trauma, this means stopping the bleeding; that usually means surgery, and before that, direct pressure or tourniquets.
Achieving this control is absolutely essential and absolutely time-critical.
Ladies and gentlemen, it is time to crack the door to a vast and terrible realm.
It won’t be a short journey, and it won’t be an easy one. But it is our destiny.
What am I talking about? I’m talking about shock, of course.
Prehospital providers don’t understand shock. That’s understandable — because shock is complicated. It’s as complicated as disease processes get.
But we need to understand it. Shock is quite literally in our blood. Since the very birth of EMS, reducing the harm associated with shock states has been one of our main reasons for existing. It kills many, it debilitates many more, it spares no age, race, or gender, and its physical effects are exhaustively widespread. Yet when properly managed, many of those patients can be saved.
We should all be experts. To work in EMS is to be, among other things, a shock technician. This is our wheelhouse.
So, although it will take more than a few posts to walk through the different facets of this Very Big Topic, let’s talk about shock.
Sharpen your pencils, gird your loins, and stand by for further.
One of the peculiarities of EMS education — and as a byproduct, of EMS practice and culture — is that we spend the majority of our time focusing on the minority of our calls. Think about it: your textbook has pages and pages devoted to ruptured aortic aneurysms, placentas previa, and mid-femur fractures — and when’s the last time you saw one of those? But scarcely a paragraph is given to the routine transfer, the drunk asleep on the sidewalk, or the MVC with minimal injuries. Call it an inverted pyramid: the most important stuff is low-volume, the most common stuff is pretty easy.
Whatever. The point is, at the very apex of this pyramid is the cardiac arrest. In its purest form, cardiac arrest is exactly why EMS exists. It couldn’t be higher stakes — as a disease, it’s absolutely certain to be life-threatening — and it’s terribly time sensitive, but the potential exists for a total cure if everything goes well.
Unfortunately, like many low-probability calls, we don’t get a great deal of experience with these — even less if your shift isn’t dedicated to emergencies. And when we don’t get much experience with something, that’s when training needs to fill in the gaps.
CPR and BLS resuscitation can seem like a confusing topic, especially given the frequent and seemingly arbitrary changes to the guidelines. The truth is, though, that it’s only gotten simpler and simpler — and you don’t need to follow the research (read: be a giant nerd like me) in order to know exactly what to do. Here’s the short, stripped-down, painless rules for how to save a life.
Push and Zap
Basically, after around sixty years of research on resuscitation, there are only two things that we know for sure help people survive cardiac arrest: chest compressions and defibrillation.
Literally, just those two things. Oh, there’s other stuff — ventilation, drugs, devices — that seem to help briefly, but so far nothing else has been proven to get someone’s heart beating again and let them walk out of the hospital with a working brain. Now, some of those other things do seem like pretty good ideas, and in many cases we started doing them before we knew if they’d really help or not, so we’re still doing them because people are used to it; it’s part of our training, and it’ll take some extra-compelling evidence to make us actually stop doing that stuff. But still, the story so far: chest compressions and defibrillation definitely help people survive, and that’s it.
What this means is that they should be your number one priority. If your patient is in cardiac arrest, that’s what they need. Other stuff? It may or may not be helpful; if you have the chance, or the personnel, and it doesn’t interfere with chest compressions and defibrillation, then you could go ahead and do it. It might help. But delaying or stopping the big two for that other stuff is like making a thirsty man wait for a drink of water while you comb his hair.
Early, Hard, Fast, Uninterrupted, and Full Recoil
Okay, so, chest compressions. Easy enough. Anyone can do ’em, all you need is your hands, just jump in there and push.
However, that’s not quite the whole story: the quality of compressions matters a great deal. We are literally pumping blood here; we are creating mechanical pressure to replace the squeezing of the heart. Just like you can wriggle a bicycle pump ineffectually without making much progress on inflating your tires, so too can you make goofy movements on someone’s chest without providing much perfusion. Even at its best, CPR only provides weak circulation compared to a real heartbeat; if you give poor CPR that’s even worse.
So here are the key components:
Early: Compressions should be initiated as soon as possible after arrest. That means, if I go down now, ideally you’ll start pushing on my chest as soon as I hit the ground. Typically that’s not possible, but mere seconds really do matter here; the longer there’s no circulation, the more tissue is endangered (all tissue, but particularly the vulnerable heart and brain), and the less likely that defibrillation will be successful — or if it is, the more likely there will be permanent complications.
Hard: Good chest compressions are a violent, aggressive act. We now recommend a depth of at least 2 inches in adults, which if you examine a mannequin (or fellow human) is remarkably deep. (Yes, “at least” means that going deeper is fine; compressions that are “too deep” are rarely seen in real life.) This isn’t a gentle cardiac massage, it’s not the mellow bouncing you usually see in movies, it’s a deep, powerful, oscillating thrust. It should tire you out, which is why we recommend changing personnel frequently; even when you think you’re still doing well after a few minutes, you’re probably not.
Fast: The recommended rate is now “at least” 100 compressions per minute. Since nobody knows what this means without a metronome, I highly recommend “musical pacing,” or using the beat of a well-known song to learn the rate. Stayin’ Alive by the Bee Gees is the classic; I like Queen’s Another One Bites the Dust myself. Again, 100 is an “at least” rate, so faster is better than slower. Admittedly, if you go extremely fast the heart won’t have time to fill between squeezes, but most “ludicrous speed!” CPR tends to have poor depth, and self-regulates anyway once you get tired.
Uninterrupted: Just like it’s essential to begin compressions as soon as possible, it’s equally essential to stop them for nothing. It’s not just that every moment you spend off the chest is “dead time” in which no blood is circulating; it’s worse than that. Chest compressions need to generate some “momentum” in order to create enough pressure to perfuse the heart; several consecutive compressions are needed before you’re really moving much blood at all. If you keep stopping — and studies show that everyone stops far more than they realize, to fiddle with one thing or another — you’re wasting those gains as soon as you’ve achieved them. Maximizing this “compression fraction” should be a primary goal; once you get on that chest, don’t stop for anything else unless it’s literally more important than circulating blood.
Full recoil: Among otherwise skilled rescuers, one of the most common errors is failing to allow for full recoil of the chest. In other words, you press down deeply, but rather than releasing fully, you start the next compression before you’ve come all the way up. This shortens the stroke of the pump just as much as if you were giving shallow compressions, and for several complex reasons (in particular the loss of preload) can reduce circulation in other ways too. We do this one particularly when we start to get tired, and begin to leaaaan forward to rest on the chest.
Defibrillation
It’s really as simple as this: once the heart’s entered fibrillation (or to a lesser extent a pulseless V-tach), the only plausible way to fix it is with electricity. These people are not going to “come to”; they are not going to have a Baywatch moment where they cough out water and wake up, even if you give them great CPR. They have an intractable problem, and the cure for it is an electric shock. Defibrillation is life-saving.
For most of us, this means using an AED, the automated devices you see everywhere from airports to ambulances. The reason they’re everywhere is because their use is time-sensitive, and if you drop dead ten miles from the nearest one, it might as well be ten light-years. No matter where you are, compressions must be performed to buy you time, and a defibrillator must be found to shock you back. If both don’t happen quickly, you will probably stay dead forever.
There are argument about some of the technical aspects of defibrillation, such as pad placement and waveform, but so far none of these details have proven to be very important. What is important is that you shock early, and get ready to shock without interfering with those compressions. Whenever possible, while one person gives compressions, someone else should clear off the chest by cutting or pulling the shirt from under the compressor’s hands, place the pads around them, and start the AED’s cycle. For many models of AED, there will be a period of several seconds while it walks you through voice prompts (telling you to stay calm, call for help, etc; these devices are designed to be usable by laypersons with no training), which should be ignored while you continue your CPR.
Once the AED tells that it’s analyzing the rhythm, you will need to stop compressions; this is the computer’s opportunity to decide whether the patient can be shocked or not, and interfering with this will just delay the process. If it doesn’t advise a shock, get back on the chest; you may have better luck later. If it does advise a shock, get back on the chest anyway! It’ll need to charge first, which may take quite a few seconds, and remember — every second matters. (Just make sure the whole team’s on the same page here, so that nobody pushes “Shock” until you’re clear.)
As soon as the AED announces that it’s ready to shock, everyone should be ready: cleared from the patient and prepared to shock. In a coordinated fashion, the compressor should clear the chest, the shock should be delivered, and he should immediately resume compressions with a pause of only a second or two. Rinse, lather, repeat.
When do you stop this process? When someone much smarter than you says to stop; or when the patient demonstrates clear signs of life (such as movement, breathing, or improved skin signs — or for the medics, a spike in end-tidal CO2). Don’t keep stopping to palpate pulses and otherwise fiddle with the patient. Like a soufflé or a Schroedinger’s cat, you must have faith in the process here, because checking on the process will assuredly cause it to fail.
It Ain’t Rocket Science
People, there are other details to this process, which is why they make us take CPR classes and carry the little cards around. And in 2015, there might be some new ideas on how we can do it best. Research continues apace in the countless EMS systems around the world that are experimenting with different technologies, techniques, and methods to improve survival. That’s how we’ve come from 1–2% survival rates to the 50%+ that a few cities now enjoy. It’s slow going, but it’s going.
But the best methods won’t matter if you don’t use them, and a lot of effort has been given to make our current methods truly simple. You literally can’t go wrong if you give great compressions and defibrillate as soon as possible. You can certainly go wrong if you forget that those are the two most important, life-saving measures — but you’d never forget that, would you?
Push and zap, folks. It’s so easy, an EMT can do it.
Syncope. To a fresh-faced student, it’s a snappy word for fainting. To someone with experience, it’s a heavy sigh, because we take a lot of calls for “syncope” and most of them are no big deal. But to a veteran provider, syncope is a deep, dark diagnostic hole—because syncope can be caused by countless different disorders, and although some are benign, a few of them are deadly.
Comprehensive diagnosis and treatment of syncope deserves its own dedicated series, and one of these days we’ll try and work through it from A to Z. Every etiology is unique and has its own distinct pathophysiology, presentation, and treatment considerations. Syncope sucks.
But for now, we’ll just talk about a few take-home pearls that can pay dividends in the everyday management of your next syncope call. We don’t support simplistic rules of thumb ’round these parts, but sometimes 95% of the work can be done by 5% of the know-how, and that’s just fine.
Here are a few dead-simple roadsigns to help guide you through the most common and most important causes of syncope.
Did they pass out and fall, or did they fall and then pass out?
Syncope means that somebody passed out and fell down. It doesn’t mean that they fell down and then lost consciousness. If they tripped on an oil can, fell over and smacked their head on a rock, they may have blacked out, but there’s no mystery there—it’s a simple trauma call.
So, our first step should be to take the raw he passed out and sift it into a more precise description. One problem is that people who lose consciousness often have a poor or unreliable memory of those events, so they may not always be helpful; this is why it’s nice to have witnesses who can tell the story. Of course, witnesses aren’t always reliable either.
Okay, so what do they remember?
To the extent that the patient remembers it, how do they describe the event?
A prodrome is an early, sometimes subtle set of symptoms that warn of a problem developing. Prodromes are our friend, because although they can be very brief or non-obvious, when present they can help indicate what happened. So, ask! It’s the O in OPQRST, and it’s the E in SAMPLE, so it’s the beginning and end of our patient history—no excuses!
Vasovagal syncope is one of the most common causes of syncope, involving a transient drop in blood pressure, and vasovagal syncope is usually preceded by a prodrome. If you’ve never had the experience of standing up too fast and getting briefly faint, here’s the gist: you become light-headed, your vision blurs or darkens, you feel weak, you may stumble, and finally you go down. There may also be broad neurological symptoms, such as visual disturbances (“seeing spots”), strange sensations, shaking, and more. (Basically, your brain isn’t getting enough oxygen, so odd stuff happens.)
How about seizures? Many seizures are preceded by a prodrome known as an “aura,” which can manifest as various unusual neurological abnormalities; read more in our piece on seizures. Did the patient truly lose consciousness, or do they claim that they remained somewhat aware? In a simple partial seizure, the patient will remain aware of their surroundings (although these often don’t cause a “syncopal” collapse); in most others they will experience a gap in consciousness.
Syncope caused by cardiac arrhythmias, such as a run of V-tach or a Stokes-Adams attack, will sometimes be preceded by a palpable sensation of weakness, or palpitations (“fluttering”) in the chest. However, in many cases there will be no warning whatsoever.
What did the witnesses see?
It’s one thing to hear about a prodrome from the patient, but you may get a different story from the bystanders.
What did they see before he went down? Did he become absent, demonstrate tics or tonic immobility, perhaps complain of an aura? Did he demonstrate obvious clonic jerking of the muscles or urinary incontinence? If he’s acting normally now, was there a period after the event where he demonstrated sluggish activity or unusual behavior, consistent with a post-ictal period? These are all suggestive of a seizure.
Were his eyes open or closed for the duration? Closed is typical of classic syncope, such as a vagal event; open is more appropriate for a seizure. If open, were they rolled back? This also suggests seizure.
Did the patient say, do, or complain of anything before or after the event, which he may no longer recall? Dizziness, headache, chest pain?
Did he stumble, lean against something, or seem to become dizzy? After he went down, did he regain consciousness almost immediately? These are suggestive of vasovagal; once a horizontal position is reached, perfusion to the brain is restored and the problem resolves. If he remained unconscious for a prolonged period while prone—or his initial episode occurred while already seated or reclined—this is highly unusual for vasovagal.
Was he walking and moving normally, in no distress, when he suddenly collapsed like a marionette with its strings cut, hitting the ground with no attempt to protect himself? This is strongly suggestive of a cardiac event and these patients should be considered high-risk for sudden death.
Is there a suggestive history or surrounding circumstances?
Sometimes, the chain of events or the patient’s medical history may suggest an etiology.
Is there a known history of a seizure disorder like epilepsy? How about diabetes? (Take a blood sugar if you’re capable of it; in my book, everybody with an altered mental status is diabetic.) Do they have often pass out or become light-headed?
Have they been eating and drinking as normal? Have they had the flu, and been unable to keep down fluids for the past two days? Were they partying all night? Vomiting? Are they a marathon runner who collapsed in 110 degree weather? Dehydration is a common cause of syncope, particularly in the young, healthy population.
Is there a known condition which may have neurological or metabolic involvement? Cancer with metastases to the brain? A recent infection? A congenital heart condition, such as Long QT, hypertrophic cardiomyopathy, or Brugada? For that matter, are they currently drunk or using drugs? If they take psychotropic or other medications, are they compliant with these, or could there have been an under- or over-dose?
Has there been any recent trauma, such as a fall, motor vehicle collision, or assault with injury?
Have there been repeated lapses in and out of consciousness, rather than a single event? This is an ominous sign suggesting a significant problem.
Are there frank clinical signs that suggest a diagnosis?
This is less likely to be useful than the history, but it can help rule in or rule out major, acute emergencies.
Cardiac abnormalities may manifest with irregular pulses, and active decompensation may be revealed in the blood pressure. Whenever possible these patients should receive ECG monitoring, including a 12-lead. Orthostatic vital signs can be considered if vagal, orthostatic, or hypovolemic etiologies are suggested.
All syncope patients, including suspected seizures, should get a neurological workup, particularly a Cincinatti Stroke Scale.
Respiratory adequacy, including pulse oximetry where available, should be assessed.
Evaluate the abdomen for signs of hemorrhage, and inquire about blood in the stool or emesis as well.
