Top 10 Questions That Frequently Stump Paramedics on the National Registry Exam

Host 2: Alright, welcome in. Today we're doing one that I get asked about constantly. The top ten questions that frequently stump paramedics on the National Registry exam.

Host 1: By EMT Tutor, sponsored by Forrest Munden and EMT Tutor. I train people for the National Registry exam.

Host 2: And quick ground rule before we start. This is education, not medical direction. Follow your local protocols.

Host 1: And one more thing to be upfront about. The Registry doesn't publish a list of its most-missed questions. So what we're covering today are the concept areas that candidates and instructors commonly report as stumbling points. Not official data. Just the stuff that trips people up, over and over.

Host 2: Yeah. And honestly, most of these aren't about knowing some obscure fact. They're about thinking in the right order. The Registry loves asking, what do you do next? Not, what do you eventually do.

Host 1: Right. So keep that in your head the whole episode. Next best step. Okay, number one.

Host 2: Number one. Stable versus unstable. You get a patient with a fast rhythm, and the question is really asking, is this rhythm the reason the patient is in trouble?

Host 1: And the AHA gives you the signs to look for. Hypotension, acutely altered mental status, signs of shock, ischemic chest discomfort, and acute heart failure.

Host 2: If the tachycardia is causing those, the patient is unstable, and the answer is synchronized cardioversion. Not adenosine. Not another drug while they crash.

Host 1: The trap is that the stem gives you a regular narrow complex rhythm at, say, one-eighty, and you see adenosine in the answers and you just grab it.

Host 2: Exactly. Read the vitals first. If the pressure is in the toilet and they're confused, that's cardioversion. If they're talking to you, warm, with a decent pressure, that's when vagal maneuvers and adenosine come into play for a regular narrow rhythm.

Host 1: And one nuance. The AHA does say you can consider adenosine for a regular narrow complex rhythm while you're getting ready to cardiovert, but it should never delay the shock. Okay, number two.

Host 2: Number two. BLS before ALS. This one gets people who are really proud of their new drug box.

Host 1: Ha. We've all been there.

Host 2: The question gives you a patient who's hypoxic, maybe a kid with a slow heart rate, and the answer choices are atropine, epinephrine, pacing, and, quote, ensure adequate oxygenation and ventilation.

Host 1: And the oxygenation answer is right more often than people expect. In kids especially, bradycardia is usually a hypoxia problem. Fix the airway and the breathing, and the heart rate often comes right back up.

Host 2: And for the pediatric rule, the AHA says if a child's heart rate is under sixty with signs of poor perfusion despite oxygenation and ventilation, you start CPR.

Host 1: So the order is airway, breathing, then drugs. The monitor doesn't get to skip the line.

Host 2: Number three. Shock that hasn't dropped the blood pressure yet. Compensated shock.

Host 1: This is a big one. People wait for hypotension to call it shock. But by the time an adult's pressure drops, they've already burned through a lot of their compensation.

Host 2: So you're looking for the early stuff. Tachycardia. Anxiety or restlessness. Pale, cool, clammy skin. Delayed capillary refill, especially in kids. Narrowing pulse pressure.

Host 1: And in kids, hypotension is a late, scary sign. The PALS definition of hypotension for kids one to ten years old is a systolic pressure under seventy plus two times the age in years. So a four-year-old under seventy-eight is hypotensive.

Host 2: And for infants, one month to one year, it's under seventy. Over ten years, under ninety.

Host 1: If a question has a tachycardic, anxious kid with a normal pressure and delayed cap refill, that's compensated shock, and you treat it like shock.

Host 2: Number four. The right ventricular infarct. The inferior STEMI trap.

Host 1: Okay, I love this one.

Host 2: You get ST elevation in leads two, three, and aVF. That's the inferior wall. The question then says, the patient is having chest pain, what do you do? And nitroglycerin is sitting right there in the choices.

Host 1: And the right answer is often, get a right-sided twelve-lead first. Look at V4R.

Host 2: Because if the right ventricle is involved, that patient is preload dependent. They need volume in the tank to push blood forward. Nitro drops preload, and their pressure can fall off a cliff.

Host 1: So the classic picture is inferior STEMI, hypotension, clear lungs, maybe JVD. That's your right-sided MI. Careful with nitrates, and fluids may be part of the plan per protocol.

Host 2: Number five. The triad mix-up. Beck's versus Cushing's.

Host 1: This one is pure memory, but people swap them all the time.

Host 2: Beck's triad is cardiac tamponade. Hypotension, J V D, and muffled heart sounds. Think heart, because Beck sounds like beat.

Host 1: And Cushing's triad is increased intracranial pressure. Hypertension with a widening pulse pressure, bradycardia, and irregular respirations.

Host 2: So one triad has the pressure going down, the other has it going up. If the stem gives you a head injury with a climbing pressure and a dropping heart rate, that's Cushing's, and that brain is in serious trouble.

Host 1: And while we're in trauma, tension pneumothorax gets mixed in. Absent breath sounds on one side, worsening respiratory distress, hypotension, J V D, and tracheal deviation as a late sign. The fix there is needle decompression per your protocol.

Host 2: Number six. Acid-base. The ABG questions.

Host 1: People freeze on these. But you can do it in three steps.

Host 2: Step one, look at the pH. Normal is seven-thirty-five to seven-forty-five. Under seven-thirty-five is acidosis, over seven-forty-five is alkalosis.

Host 1: Step two, look at the carbon dioxide. Normal is thirty-five to forty-five. C O two is an acid. If the pH is low and the C O two is high, it's respiratory acidosis. Think of a patient who isn't breathing enough, like an opioid overdose or C O P D.

Host 2: Step three, look at the bicarb. Normal is twenty-two to twenty-six. Bicarb is a base. If the pH is low and the bicarb is low, it's metabolic acidosis. Think D K A, sepsis, lactic acid.

Host 1: And the memory trick a lot of people use is ROME. Respiratory opposite, metabolic equal. In respiratory problems, the pH and C O two move in opposite directions. In metabolic problems, the pH and bicarb move in the same direction.

Host 2: And the one that trips people up clinically is Kussmaul breathing in D K A. That deep, fast breathing is the patient blowing off C O two to compensate. If you take over that airway and ventilate them slower than they were breathing, you can make the acidosis worse.

Host 1: Number seven. Hyperkalemia on the ECG.

Host 2: Peaked T waves first. Then as it gets worse, the P waves flatten out, the P R gets longer, and the Q R S widens. Eventually you can get that sine wave pattern, and then arrest.

Host 1: And who's the patient? Dialysis patient who missed a session. Renal failure. Crush injury. Some medications.

Host 2: The question will give you a dialysis patient who's weak with tall, tented T waves and wide Q R S complexes. Recognize it. And then the treatment, per your protocols, is aimed at stabilizing the heart and shifting potassium, which is where calcium, sodium bicarbonate, and albuterol come up.

Host 1: Number eight. Drug contraindications hiding in the history.

Host 2: The answer isn't the drug. The answer is the reason you don't give the drug.

Host 1: Two classics. Nitroglycerin and erectile dysfunction drugs. If the patient took sildenafil or vardenafil in the last twenty-four hours, or tadalafil in the last forty-eight, nitro can cause profound hypotension.

Host 2: And the other one, adenosine and A V nodal blockers in an irregular, wide, really fast rhythm. That's the possible pre-excited atrial fibrillation, W P W picture. The AHA specifically says to avoid adenosine and A V nodal blockers there, because blocking the node can push conduction down the accessory pathway.

Host 1: So read the med list in the stem. It's there for a reason.

Host 2: Number nine. Airway confirmation and E T C O two.

Host 1: The Registry wants you to know that continuous waveform capnography is the way to confirm and monitor tube placement. Not just listening to breath sounds. Not just fogging in the tube.

Host 2: And during CPR, the AHA says waveform capnography can help you monitor CPR quality. If the E T C O two is low or dropping, reassess your compressions. And a sudden jump in E T C O two can be an early sign of return of spontaneous circulation.

Host 1: And a flat line on the waveform right after you intubate, assume the tube is out until proven otherwise.

Host 2: Number ten. Triage. Operations questions are where good clinical people lose easy points.

Host 1: In START triage, anyone who can walk goes green, minor. Then you check respirations. Not breathing after you reposition the airway, that's black, deceased or expectant. Breathing over thirty a minute, that's red, immediate.

Host 2: Then perfusion. A radial pulse that's absent or a cap refill over two seconds, red. Then mental status. Can't follow simple commands, red. If they pass all of that, they're yellow, delayed.

Host 1: The trap is that people want to stop and treat during triage. The only things you do in START are quick ones, like opening the airway and controlling major bleeding.

Host 2: Okay, quick recap. Stable versus unstable. BLS before ALS. Compensated shock. The right-sided MI. Beck's versus Cushing's. Acid-base. Hyperkalemia. Contraindications in the history. Capnography. And triage.

Host 1: And the theme through all of them is the same. Assess first, fix the basics, then advance. Read every vital sign and every line of history in that question.

Host 2: By EMT Tutor, sponsored by Forrest Munden and EMT Tutor. I train people for the National Registry exam.

Host 1: This is education, not medical direction. Follow your local protocols. Go crush that exam.