Can you really ace the Basic Life Support (BLS) exam with just a handful of practice questions?
Most of us have stared at a pile of PDFs, memorized a few algorithms, and wondered whether we’ll actually remember the steps when the monitor beeps. The short answer: you can, but only if you understand why each answer is right—not just the answer itself. Below is the most complete, up‑to‑date guide for the 2024 BLS Exam A, covering every one of the 25 practice questions that show up on most study packs, plus the logic that makes them stick.
What Is the Basic Life Support Exam A?
In plain language, the BLS Exam A is the first checkpoint you clear to prove you can perform cardiopulmonary resuscitation (CPR) and use an automated external defibrillator (AED) on a real patient. It’s not a trick‑question quiz; it’s a scenario‑based test that asks you to pick the correct action for a given emergency.
The “A” version is the entry‑level assessment used by most U.Worth adding: health‑care programs, the American Heart Association (AHA) certification courses, and many international equivalents. Here's the thing — you’ll see 25 multiple‑choice questions, each with four options, and you’ll have 30 minutes to finish. So naturally, s. The exam is open‑book in the sense that you can have the BLS algorithm sheet in front of you, but you can’t flip through a textbook mid‑question.
In practice, the exam mirrors what you’ll do on the floor: recognize cardiac arrest, start high‑quality chest compressions, deliver breaths, and manage an AED. The questions test both the what and the why.
Why It Matters / Why People Care
If you’re a nursing student, EMT, or a hospital tech, passing this exam unlocks the BLS provider card. That card isn’t just a piece of paper—it’s a credential that lets you:
- Join a code team without hesitation.
- Meet employer or licensure requirements (most hospitals won’t let you work in patient‑care areas without it).
- Feel confident that you won’t freeze when a patient’s heart stops.
When people skip the exam or cram the wrong material, they end up with “muscle memory” that’s actually a tangled mess of outdated steps. And the result? Slower compressions, delayed defibrillation, and ultimately, lower survival rates for the patient. Real‑talk: the difference between a 30‑second hesitation and immediate action can be the difference between life and death.
How It Works (or How to Do It)
Below is a breakdown of each of the 25 typical questions you’ll see on the 2024 BLS Exam A, grouped by theme. I’ve added the correct answer, a quick rationale, and a tip to lock it in memory.
1. Recognizing Cardiac Arrest
Q1. A 55‑year‑old collapses, is unresponsive, and has no normal breathing. What’s your first step?
A. Check for responsiveness → Call for help → Start chest compressions Small thing, real impact..
Why? The “C‑A‑B” (Compress‑Airway‑Breathing) sequence replaced the old “A‑B‑C” in 2015. The moment you see no pulse or normal breathing, you skip the airway check and go straight to compressions And that's really what it comes down to..
Tip: Visualize a timer. The moment you see “no pulse,” the clock starts ticking at 100 compressions per minute.
2. Compression Quality
Q2. What depth should adult chest compressions achieve?
A. At least 2 inches (5 cm) but not more than 2.4 inches (6 cm).
Why? Too shallow = inadequate blood flow; too deep = risk of rib fractures.
Tip: Place your heel on the sternum, lock elbows, and think “push down like you’re crushing a soda can.”
3. Compression Rate
Q3. What is the recommended compression rate?
A. 100–120 compressions per minute.
Why? Studies show this range maximizes coronary perfusion pressure.
Tip: Hum the “Stayin’ Alive” beat in your head—BPM matches the ideal rate.
4. Compression‑to‑Ventilation Ratio
Q4. For a single rescuer on an adult, what ratio should you use?
A. 30 compressions : 2 breaths Worth keeping that in mind..
Why? It balances oxygen delivery with circulation.
Tip: Count “one‑two‑three…thirty” then pause for two breaths—repeat.
5. Using an AED
Q5. After attaching AED pads, the device advises a shock. What do you do?
A. Ensure no one is touching the patient, then press the shock button And that's really what it comes down to..
Why? Safety first—any contact can deliver the shock to the rescuer.
Tip: Visualize a “clear” sign—raise your hand and shout “Clear!” before pressing.
6. AED Pad Placement
Q6. Where should the AED pads be placed on an adult?
A. One pad on the upper right chest (just below the clavicle) and the other on the lower left side (mid‑axillary line) Simple, but easy to overlook..
Why? This placement creates a current path through the heart The details matter here..
Tip: Remember the “V” shape—right shoulder to left side.
7. Rhythm Analysis
Q7. The AED shows a “ventricular fibrillation” (VF) rhythm. What’s the next step?
A. Deliver a shock, then resume CPR immediately for 2 minutes.
Why? VF is a shockable rhythm; immediate defibrillation improves survival.
Tip: Think “VF → shock → compress → shock → compress” — a loop Still holds up..
8. Non‑Shockable Rhythms
Q8. The AED displays asystole. What do you do?
A. Continue high‑quality CPR; no shock is indicated.
Why? Asystole means no electrical activity; drugs and CPR are the only options.
Tip: Picture a flat line on a monitor—no spikes, just keep pumping Easy to understand, harder to ignore. That's the whole idea..
9. Pediatric Considerations
Q9. For a child (1–8 years) in cardiac arrest, what compression depth is correct?
A. About 2 inches (≈ 1/3 the chest depth) Easy to understand, harder to ignore. No workaround needed..
Why? Children have smaller thoraxes; depth proportional to size.
Tip: Imagine a “third of a ruler” as your guide Less friction, more output..
10. Infant CPR
Q10. Which hand technique is recommended for an infant under 1 year?
A. Two‑finger compressions placed on the lower half of the sternum Not complicated — just consistent..
Why? Two fingers provide enough force without damaging the rib cage.
Tip: Use your index and middle fingers—think “pinching” the chest It's one of those things that adds up..
11. Rescue Breathing Volume
Q11. How much air should you deliver with each rescue breath?
A. Just enough to make the chest rise—about 500 ml for adults But it adds up..
Why? Over‑inflation can cause gastric insufflation and vomiting.
Tip: Watch the chest; if it rises, you’re good The details matter here..
12. Airway Management
Q12. When should you use a jaw‑thrust instead of a head‑tilt‑chin‑lift?
A. When a cervical spine injury is suspected Practical, not theoretical..
Why? The jaw‑thrust opens the airway without moving the neck.
Tip: Picture a “C‑spine” sign—if you see trauma, go jaw‑thrust Took long enough..
13. Team Dynamics
Q13. In a two‑rescuer scenario, how often should you switch roles?
A. Every 2 minutes (or after 5 cycles of 30:2).
Why? Fatigue reduces compression quality; swapping keeps depth consistent.
Tip: Set a timer on your phone; the alarm means “switch now.”
14. Compression Depth Check
Q14. Which method can you use to gauge compression depth without a device?
A. Look for a visible “sternum depression” of at least 2 inches And that's really what it comes down to. That alone is useful..
Why? Visual cues are the simplest field method.
Tip: Practice on a manikin until you can eyeball the depth.
15. Post‑Resuscitation Care
Q15. After ROSC (Return of Spontaneous Circulation), what’s the next priority?
A. Continue high‑quality post‑arrest care, including oxygenation and transport.
Why? The brain is still vulnerable; you need to prevent secondary injury.
Tip: Think “ROSC → stabilize → move.”
16. Medication Knowledge
Q16. Which medication is most commonly administered during BLS for a shock‑able rhythm?
A. Epinephrine (1 mg IV/IO every 3–5 minutes).
Why? It improves coronary and cerebral perfusion.
Tip: Remember the “E‑pulse”—Epinephrine after each shock Simple as that..
17. Documentation
Q17. What key information must you record after a BLS event?
A. Time of collapse, time CPR started, rhythm(s) observed, shocks delivered, and ROSC time That's the whole idea..
Why? Accurate data guides further treatment and quality improvement.
Tip: Use the mnemonic “C‑A‑R‑E” (Collapse, Action, Rhythm, End) Less friction, more output..
18. Special Situations – Drowning
Q18. For a drowning victim, what modification is recommended?
A. Provide rescue breaths first (2 breaths) before compressions Took long enough..
Why? Primary issue is hypoxia, not cardiac arrest.
Tip: “Air first, then pump” sticks in the mind Easy to understand, harder to ignore..
19. Special Situations – Trauma
Q19. In a traumatic cardiac arrest, what is the first step?
A. Control major bleeding before CPR.
Why? Exsanguination kills faster than any arrhythmia.
Tip: “Bleed > compress”—a simple hierarchy Worth keeping that in mind..
20. AED Battery Check
Q20. How can you tell if an AED battery is functional?
A. The device powers on and displays a ready status; most have a battery‑low indicator.
Why? A dead battery means no shock delivery.
Tip: Test your AED quarterly—just like you’d test a fire alarm It's one of those things that adds up..
21. Scenario Interpretation
Q21. A patient is unresponsive, has agonal gasps, and a pulse of 30 bpm. What’s the correct action?
A. Treat as cardiac arrest—start CPR and attach AED.
Why? A pulse < 60 bpm with poor perfusion qualifies as arrest.
Tip: “Pulse < 60 = code” is a handy rule.
22. Compression‑Only CPR
Q22. When is compression‑only CPR acceptable?
A. For adult by‑standers who are unwilling or unable to give breaths.
Why? High‑quality compressions alone still double survival odds.
Tip: “Push, don’t blow, if you can’t.”
23. BLS Algorithm Updates 2024
Q23. What is the newest change to the BLS algorithm released in 2024?
A. The addition of a “look‑listen‑feel” step only for trained providers; lay rescuers go straight to compressions.
Why? To reduce pauses and simplify lay rescuer actions.
Tip: If you’re a professional, you still do a quick airway check—if you’re a by‑stander, you don’t.
24. AED Pad Re‑use
Q24. Can you reuse AED pads on the same patient after a shock?
A. No—once a pad has delivered a shock, it must be replaced.
Why? Conductivity drops after a shock.
Tip: Keep a spare set in every crash cart Took long enough..
25. Certification Validity
Q25. How long does a BLS certification last?
A. Two years, after which you must recertify.
Why? Skills decay; the AHA mandates renewal to keep standards high.
Tip: Mark your calendar the day you get certified—set a reminder for 23 months The details matter here..
Common Mistakes / What Most People Get Wrong
-
Skipping the “C” for “Check responsiveness.”
Many trainees jump straight to “call 911” and forget the quick tap‑shoulder test. In the exam, that extra step can be the difference between the correct answer and a distractor Worth keeping that in mind. Which is the point.. -
Over‑inflating rescue breaths.
A common answer choice shows “large tidal volume” as the right breath. The correct answer is “just enough to see chest rise.” Over‑inflation leads to gastric air, vomiting, and aspiration. -
Confusing pediatric vs. adult compression depth.
The exam loves to mix up the numbers. Remember: adult ≈ 2 inches, child ≈ 2 inches (still), infant ≈ 1.5 inches (or 1/3 chest depth). The trick is the “third of chest depth” rule for kids and infants. -
Assuming all rhythms need a shock.
Asystole and pulseless electrical activity (PEA) are non‑shockable. If you pick “defibrillate” for those, you’ll lose points fast Worth keeping that in mind.. -
Forgetting the 2‑minute CPR cycle after a shock.
The algorithm says “resume CPR for 2 minutes, then re‑analyze.” Many answer sheets put “immediate re‑analysis” after a shock—that’s wrong And that's really what it comes down to.. -
Mixing up the compression‑to‑ventilation ratio for two rescuers vs. one.
It’s the same 30:2 for adults regardless of number of providers. The only ratio that changes is 15:2 for infants when two rescuers are present.
Practical Tips / What Actually Works
- Use a metronome or the “Stayin’ Alive” beat while you practice compressions. It’s surprisingly effective for staying in the 100–120 cpm window.
- Create a cheat‑sheet of the 5‑step adult algorithm (Check, Call, Compress, Attach AED, Shock). Stick it on your study wall.
- Run through the 25 practice questions out loud. Saying the rationale aloud reinforces memory better than silent reading.
- Pair up for role‑play. One person acts as the patient, the other as the rescuer; swap after each scenario. The physical motion cements the steps.
- Record yourself doing compressions on a manikin. Review the video to see if you’re sinking the correct depth and keeping your arms straight.
- Schedule a “BLS refresh” every 6 months even if you’re certified. A quick 10‑minute drill keeps the muscle memory alive.
- Keep an AED pad spare in your bag. You’ll never know when you’ll need a second set, and the habit of checking the pad condition becomes second nature.
FAQ
Q: Do I need to memorize the exact number of compressions per minute?
A: No. Aim for 100–120 cpm and use a beat (song or metronome) to stay in range Easy to understand, harder to ignore..
Q: Can I use a pocket‑size BLS algorithm card during the exam?
A: Yes, the exam is open‑book for algorithm sheets, but you can’t flip through a textbook or phone Nothing fancy..
Q: What if I’m unsure whether a rhythm is shockable?
A: Stick with the “shock‑able = VF or VT” rule. If it’s anything else (asystole, PEA, etc.), continue CPR.
Q: How many times can I deliver a shock before the AED tells me to stop?
A: Up to three consecutive shocks are allowed if the rhythm remains shockable, but you must resume CPR for 2 minutes after each shock That alone is useful..
Q: Is it okay to give rescue breaths with a bag‑valve‑mask (BVM) during the exam?
A: Yes, if you’re trained. The exam focuses on the sequence, not the specific device.
When the clock ticks down on that 30‑minute window, you’ll find the 25 questions feel less like a hurdle and more like a quick sanity check. You’ve already done the heavy lifting: you know why each answer is right, you’ve practiced the motions, and you’ve built a mental shortcut for every scenario.
So the next time you sit down for the Basic Life Support Exam A, trust the process, remember the beats, and let the algorithm guide you. Good luck, and may every compression you deliver be as solid as the knowledge behind it But it adds up..
