30 Basic Life Support Questions and Answers (BLS QUIZ)

Test your knowledge of essential basic life support skills with our 30 bls quizzes with answers! These questions cover various scenarios, techniques, and considerations related to BLS, CPR, and AED use, testing the learner’s ability to apply their knowledge in more complex situations.
This BLS, AED, and CPR quiz will assess your understanding of recognizing emergencies, using an AED, and performing CPR for adults.
List of Top 30 BLS Quiz (with few advance questions)
Answers are provided for the Basic life support questions
- What is the first step in the BLS sequence?
A. Check for responsiveness
B. Call for help
C. Check for breathing
D. Perform chest compressions
2. What is the recommended rate for chest compressions in an adult?
A. 60-80 compressions per minute
B. 80-100 compressions per minute
C. 100-120 compressions per minute
D. 120-140 compressions per minute
3. What is the correct depth for chest compressions in an adult?
A. 1-2 inches (2.5-5 cm)
B. 2-2.4 inches (5-6 cm)
C. 2.5-3 inches (6.5-7.5 cm)
D. 3-4 inches (7.5-10 cm)
4. When should rescue breaths be given during CPR?
A. Every 10 compressions
B. Every 15 compressions
C. Every 30 compressions
D. Every 60 compressions
5. What is the correct ratio of compressions to breaths for one-rescuer CPR on an adult?
A. 15:1
B. 20:2
C. 30:2
D. 40:2
6. What is the purpose of an AED?
A. To provide oxygen to the victim
B. To deliver an electric shock to restart the heart
C. To perform chest compressions
D. To provide rescue breaths
7. When should an AED be used?
A. For any unresponsive victim
B. For a victim with no pulse and not breathing normally
C. For a victim with a minor injury
D. For a victim with a suspected broken bone
8. What is the correct sequence for using an AED?
A. Turn on the AED, attach pads, deliver shock
B. Turn on the AED, attach pads, analyze rhythm, deliver shock if advised
C. Deliver shock, attach pads, turn on the AED
D. Analyze rhythm, deliver shock, attach pads
9. What should you do if the AED does not advise a shock?
A. Deliver a shock anyway
B. Continue CPR
C. Remove the pads
D. Turn off the AED
10. When should CPR be stopped?
A. When the victim starts breathing normally
B. When emergency medical services (EMS) arrive and take over
C. After 10 minutes of CPR
D. When the rescuer becomes tired
11. What is the purpose of rescue breaths during CPR?
A. To provide oxygen to the victim’s brain
B. To provide oxygen to the victim’s lungs and bloodstream
C. To encourage the victim to start breathing on their own
D. To clear any obstruction in the victim’s airway
12. What should you do if the victim starts breathing normally during CPR?
A. Continue CPR
B. Stop CPR and monitor breathing
C. Deliver rescue breaths only
D. Use the AED
13. What is the correct hand position for chest compressions in an adult?
A. On the lower abdomen
B. In the center of the chest
C. On the left side of the chest
D. On the right side of the chest
14. What is the recommended technique for rescue breaths?
A. Pinch the nose and blow into the mouth
B. Tilt the head back, lift the chin, and give two breaths
C. Blow into both the nose and mouth
D. Give continuous breaths without pausing
15. What should you do if the victim vomits during CPR?
A. Quickly roll the victim onto their side and clear the airway
B. Continue chest compressions without interruption
C. Stop CPR and call for emergency medical services
D. Deliver rescue breaths to clear the airway
16. What is the recommended sequence for a lone rescuer providing BLS to an unresponsive adult?
A. Call for help, give rescue breaths, start chest compressions
B. Activate the emergency response system, start CPR, use an AED if available
C. Give chest compressions, give rescue breaths, call for help
D. Use an AED, give rescue breaths, start chest compressions
17. What is the purpose of chest compressions during CPR?
A. To restart the heart
B. To circulate oxygenated blood to vital organs
C. To clear the airway
D. To encourage the victim to start breathing
18. What should you do if an AED is not immediately available?
A. Wait for the AED to arrive before starting CPR
B. Start CPR immediately
C. Call emergency medical services and wait for their arrival
D. Move the victim to a location with an AED
19. What is the recommended compression-to-ventilation ratio for two-rescuer CPR on an adult?
A. 15:2
B 30:2
C. 30:1
D. 15:1
20. What is the purpose of defibrillation with an AED?
A. To restart the heart
B. To stop the abnormal heart rhythm and allow a normal rhythm to resume
C. To provide oxygen to the victim
D. To clear any obstruction in the airway
21. During two-rescuer CPR on an adult, how frequently should you switch the compressor role to prevent fatigue?
A. Every 2 minutes
B. Every 5 cycles or 2 minutes, whichever comes first
C. Every 10 minutes
D. After each round of 30 compressions
22. What is the recommended technique for performing chest compressions on an obese adult victim?
A. Use one hand in the center of the chest
B. Compress higher on the chest, close to the neck
C. Reposition yourself to create a straight line from your shoulders to the victim’s chest
D. Compress with less depth due to the increased body mass
23. If an AED delivers a shock and the victim’s rhythm remains shockable, what should you do next?
A. Deliver another shock immediately
B. Resume CPR for 2 minutes, then analyze the rhythm again
C. Remove the AED pads and start compressions
D. Call emergency medical services for further assistance
24. What is the recommended compression-to-ventilation ratio for CPR on a child aged 1 to 8 years old?
A. 15:2
B. 20:2
C. 30:2
D. 2 breaths for every 15 compressions
25. When performing CPR on a pregnant woman, what additional consideration should be taken?
A. Perform compressions on the left side of the chest
B. Manually displace the uterus to the left during compressions
C. Increase the depth of compressions by 1 inch
D. Provide rescue breaths every 15 compressions
26. In what situation would you consider terminating resuscitation efforts during CPR?
A. After 30 minutes of continuous CPR
B. If the victim starts breathing normally
C. If you are too exhausted to continue effective CPR
D. If you are in a unsafe environment that poses a risk to your safety
27. What is the recommended technique for delivering rescue breaths to an infant during CPR?
A. Pinch the nose and give two breaths into the mouth
B. Cover the infant’s mouth and nose with your mouth and give two puffs of air
C. Give continuous gentle puffs of air into the mouth
D. Tilt the head back and give two breaths into the nose
28. What is the purpose of the precordial thump in cardiac arrest situations?
A. To deliver a shock to the heart
B. To attempt to restart the heart by striking the chest wall
C. To clear any obstruction in the airway
D. To assess the victim’s pulse
29. When using an AED on a victim with a pacemaker or implantable cardioverter-defibrillator (ICD), what additional precaution should be taken?
A. Do not use the AED, as it may interfere with the device
B. Position the AED pads at least 1 inch away from the implanted device
C. Disconnect the implanted device before using the AED
D. No additional precaution is necessary
30. During CPR on an adult, you notice that the victim’s pupils are dilated and non-reactive. What could this indicate?
A. The victim is regaining consciousness
B. The victim may have suffered a traumatic brain injury
C. The victim is in a state of shock
D. The victim is not receiving enough oxygen
Benefit of this BLS QUIZ
There are several benefits to taking a BLS quiz:
Tests Knowledge and Memory:
BLS quizzes check how well you understand the key ideas and steps from a Basic Life Support (BLS) course. This helps you see where you might need to review or practice more.
Builds Confidence:
Doing well on a basic life support quiz can make you feel more confident in your ability to perform CPR and use an AED in an emergency. This confidence is important when you face a real-life situation.
Finds Knowledge Gaps:
Basic life support quizzes show you the areas where your knowledge might be weak. This lets you focus on studying those parts so you’re fully ready for emergencies.
Acts as a Refresher:
Taking a BLS quiz can remind you of what you learned if you’ve already done a BLS course. Repeating the information helps strengthen your skills and memory for important actions like CPR.
Prepares you for BLS Certification:
Many BLS courses use quizzes as part of their certification process. Regular practice with quizzes can help you feel more ready for the official exam.
These basic life support questions and answers are a helpful tool for anyone wanting to be ready to act quickly and effectively in an emergency.
If you need a complete bls checklist pdf to understand what to know and make the best out of your basic life support practical class, you can download it at the Caring For Care Ltd website for free.
You can also attend any of the practical bls courses at: Caring for Care Limited, Suite F10, The Old Town Hall, Gimson Street, Fenton, Stoke-on-Trent, ST4 3FF or call 01782 563333 within 8am-4pm, Monday to Friday.