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NREMT — EMT & Paramedic
NREMT Cardiology Practice Questions (with Rationales)
Cardiology and resuscitation is one of the heaviest-weighted content areas on the NREMT cognitive exam, and it's where the computer-adaptive test (CAT) most loves 'next best step' questions. The exam rarely asks you to recite anatomy — it gives you a patient ('a 58-year-old with crushing substernal pressure, pale and diaphoretic') and asks what you do first, what you do next, and what finding changes your plan.
This guide reviews the decision frameworks the NREMT actually tests — scene-to-transport priorities for chest pain, high-quality CPR and AED logic, and shock recognition — then drills you with exam-style questions and rationales. Doses are deliberately left out: the NREMT tests indications, contraindications and sequence, and your local protocols govern numbers in the field.
How the NREMT frames cardiac calls
Almost every cardiology item maps to one of three frames. Frame 1 — the conscious chest-pain patient: scene safety, primary assessment, high-priority determination, then the classic sequence: position of comfort, oxygen only if indicated (current standards target SpO2 roughly 94% or above — routine high-flow O2 for comfortable ACS patients is an outdated answer), aspirin per protocol when not contraindicated (allergy, active bleeding), assist with prescribed nitroglycerin per protocol after checking blood pressure and asking about erectile-dysfunction drugs, and early, rapid transport with a 12-lead acquired early where scope allows. STEMI recognition changes destination: the test rewards transport decisions toward PCI-capable facilities per protocol.
Frame 2 — the arrest: the answer is almost always the one that gets compressions started or resumed fastest. High-quality CPR: 100–120 per minute, about 2 inches (adults), full recoil, minimal interruptions, 30:2 (single rescuer); attach the AED as soon as it arrives and shock as advised, resuming compressions immediately after. Frame 3 — the 'sick or not sick' discriminator: cardiogenic shock, heart failure with pulmonary edema (dyspnea, crackles, JVD, tripoding), and syncope as a cardiac red flag in older adults. Recognizing perfusion failure — altered mentation, pale cool diaphoretic skin, hypotension — and acting on it beats memorizing pathology.
What separates passing answers from failing ones
The NREMT loves the 'all answers are right, one is righter' format. The tiebreakers: treat the patient, not the monitor (a rhythm question with an unstable patient is asking about the patient); sequence discipline (life threats in the primary survey before any secondary assessment; pulse check before CPR in the unresponsive patient); and scope honesty (EMT candidates: assisting with the patient's own nitro per protocol is in scope, interpreting 12-leads is not; medic candidates: the test expects rhythm recognition and electrical therapy logic — synchronized cardioversion for unstable tachycardia with a pulse, defibrillation for VF/pulseless VT, pacing for unstable bradycardia).
Build the habit of reading the last sentence of the stem first ('what is the EMT's next action?') and then hunting the scenario for the highest-priority unaddressed threat. That single habit converts most cardiology items into pattern matching.
Practice questions with answers & rationales
Q1. A 58-year-old reports crushing chest pressure radiating to his jaw. He is pale and diaphoretic, SpO2 97% on room air. After the primary assessment, what comes first: oxygen, aspirin, or nitroglycerin?
Answer: Aspirin per protocol (after confirming no allergy or contraindication). Oxygen isn't indicated at 97% under current standards, and nitroglycerin requires a blood pressure check, protocol authorization, and screening for PDE-inhibitor use first — and on most services it's the patient's own prescription the EMT assists with. Aspirin's antiplatelet effect addresses the underlying clot process, which is why it outranks the comfort-oriented choices.
Q2. You witness an adult collapse. He is unresponsive with no normal breathing and no pulse after a check of no more than 10 seconds. The AED is across the room. What's your next action?
Answer: Start compressions immediately and have someone retrieve/attach the AED while CPR continues. Compressions begin first whenever there's any delay obtaining the defibrillator; analysis happens as soon as the pads are on. The rationale the NREMT is testing: time-to-compressions and time-to-first-shock are the two survival levers, and you never wait idle for equipment.
Q3. During two-rescuer CPR, the AED advises 'no shock.' What do you do?
Answer: Resume high-quality compressions immediately and continue cycles, reanalyzing every 2 minutes. 'No shock advised' means a non-shockable rhythm (asystole/PEA) — it does not mean stop. The most commonly missed detail: compressions resume instantly after any analysis or shock, without a pulse check first; pulse checks happen at rhythm checks per the cycle.
Q4. A 70-year-old woman has sudden weakness, nausea, and 'indigestion' for two hours, with diaphoresis. Why should this be treated as a cardiac call?
Answer: Women, older adults, and diabetics frequently present with atypical ACS: weakness, dyspnea, epigastric discomfort, nausea, fatigue — without classic crushing pain. The exam rewards the candidate who applies cardiac assessment (vitals, 12-lead where in scope, aspirin per protocol, rapid transport) to atypical presentations rather than anchoring on 'indigestion.' Anchoring bias is exactly what this stem is built to catch.
Q5. Your chest-pain patient took sildenafil last night. Medical direction asks about assisting with his prescribed nitroglycerin. What do you report and why?
Answer: Report the PDE-5 inhibitor use and withhold nitro pending direction — nitrates plus PDE-5 inhibitors can cause catastrophic, refractory hypotension. The screening questions before any nitro assist: systolic blood pressure adequate per protocol, no recent ED-drug use, the medication is the patient's own and protocol authorizes assisting. This is among the most reliably tested contraindications in the entire exam.
Q6. A patient with crushing chest pain becomes unresponsive in your ambulance. Pulse is present, then lost. As a paramedic, the monitor shows ventricular fibrillation. Next action?
Answer: Immediate defibrillation — unsynchronized shock — with compressions ongoing while charging and resumed instantly after. VF/pulseless VT is the shockable arrest; synchronized cardioversion is for unstable tachycardias with a pulse (the synchronizer needs an R wave and a perfusing rhythm to time against). Confusing these two electrical therapies is a classic exam discriminator.
Q7. Which finding most suggests cardiogenic shock rather than simple ACS: BP 84/60 with cool mottled skin and altered mentation, or BP 146/92 with anxiety?
Answer: The first — hypotension with hypoperfusion signs (cool mottled skin, altered mentation) on a cardiac presentation is pump failure. Management priorities shift: positioning supine as tolerated, oxygenation, rapid transport, early ALS, and avoiding/setting strict caution around nitrates (preload-dependent hypotensive patients can crash on them). Recognizing 'sick' and changing the plan is the skill under test.
Common mistakes to avoid
- Choosing high-flow oxygen for every cardiac patient. Current standards titrate to SpO2 — 'O2 15 LPM NRB for everyone' is the outdated distractor.
- Giving or assisting nitroglycerin before checking blood pressure and asking about erectile-dysfunction medications.
- Stopping compressions to wait for the AED, or pausing after a shock to check a pulse instead of resuming CPR.
- Confusing defibrillation (pulseless VF/VT) with synchronized cardioversion (unstable tachycardia with a pulse).
- Anchoring on 'indigestion' or 'anxiety' in atypical ACS stems — women, elders, and diabetics present atypically on purpose in NREMT items.
- Answering with your local protocol's drug numbers. The national exam tests indications, contraindications and sequence — not your county's doses.