BLS Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What should you do if you find an unconscious person and you're unsure whether they're
breathing?
✔✔Check for breathing for no more than 10 seconds. If the person is not breathing or only
gasping, begin CPR.
How should you perform chest compressions during CPR?
✔✔Place the heel of one hand on the center of the chest and the other hand on top. Keep your
elbows straight and use your upper body weight to push down at least 2 inches deep at a rate of
100-120 compressions per minute.
What is the correct rate for chest compressions during CPR?
✔✔Chest compressions should be performed at a rate of 100-120 compressions per minute.
When should you use an AED on a victim?
✔✔You should use an AED as soon as it is available and after confirming that the person is
unresponsive and not breathing.
1
,What is the purpose of using an AED?
✔✔The purpose of using an AED is to deliver an electrical shock to restore a normal heart
rhythm in the event of sudden cardiac arrest.
How do you position your hands for chest compressions on a child?
✔✔For a child, place one or both hands on the center of the chest, depending on the size of the
child, and push down about 1/3 the depth of the chest (about 2 inches).
What is the compression depth for CPR on an infant?
✔✔For an infant, compress the chest about 1.5 inches deep.
How many rescue breaths should you give during CPR?
✔✔Give 2 rescue breaths after every 30 chest compressions.
What should you do if the chest doesn't rise when giving a rescue breath?
✔✔Reposition the victim’s head to ensure the airway is open and try giving another breath. If
the chest still doesn't rise, check for an obstruction in the airway.
2
,How can you tell if a person is breathing normally?
✔✔Normal breathing will appear regular and effortless, with a normal rate of about 12-20
breaths per minute.
When should you stop CPR?
✔✔Stop CPR if the person shows signs of life, such as breathing, or if emergency medical help
arrives and takes over.
What is the first step in CPR for an adult?
✔✔The first step is to check the person’s responsiveness by tapping them and shouting to see if
they respond.
What should you do if you are alone and need to perform CPR on an infant?
✔✔If you're alone with an infant, perform 2 minutes of CPR and then call for help.
How should you perform CPR on a choking adult?
✔✔Perform chest compressions and follow up with attempts to clear the airway by using the
Heimlich maneuver if necessary.
3
, What is the correct ratio of chest compressions to rescue breaths for CPR on a child?
✔✔The ratio is 30 chest compressions to 2 rescue breaths for a child.
How do you deliver a rescue breath to an infant?
✔✔Cover the infant’s nose and mouth with your mouth, and gently give a breath until the chest
rises.
What should you do if an AED prompts “no shock advised”?
✔✔If the AED says “no shock advised,” continue CPR, providing chest compressions and
rescue breaths until emergency medical help arrives.
When can you switch roles while performing CPR?
✔✔You should switch roles every 2 minutes to prevent fatigue and maintain effective chest
compressions.
How can you tell if CPR is being performed effectively?
✔✔Effective CPR is characterized by visible chest rise with each rescue breath and the ability to
compress the chest to the appropriate depth.
4
Version | 2025/2026 | Correct & Verified
What should you do if you find an unconscious person and you're unsure whether they're
breathing?
✔✔Check for breathing for no more than 10 seconds. If the person is not breathing or only
gasping, begin CPR.
How should you perform chest compressions during CPR?
✔✔Place the heel of one hand on the center of the chest and the other hand on top. Keep your
elbows straight and use your upper body weight to push down at least 2 inches deep at a rate of
100-120 compressions per minute.
What is the correct rate for chest compressions during CPR?
✔✔Chest compressions should be performed at a rate of 100-120 compressions per minute.
When should you use an AED on a victim?
✔✔You should use an AED as soon as it is available and after confirming that the person is
unresponsive and not breathing.
1
,What is the purpose of using an AED?
✔✔The purpose of using an AED is to deliver an electrical shock to restore a normal heart
rhythm in the event of sudden cardiac arrest.
How do you position your hands for chest compressions on a child?
✔✔For a child, place one or both hands on the center of the chest, depending on the size of the
child, and push down about 1/3 the depth of the chest (about 2 inches).
What is the compression depth for CPR on an infant?
✔✔For an infant, compress the chest about 1.5 inches deep.
How many rescue breaths should you give during CPR?
✔✔Give 2 rescue breaths after every 30 chest compressions.
What should you do if the chest doesn't rise when giving a rescue breath?
✔✔Reposition the victim’s head to ensure the airway is open and try giving another breath. If
the chest still doesn't rise, check for an obstruction in the airway.
2
,How can you tell if a person is breathing normally?
✔✔Normal breathing will appear regular and effortless, with a normal rate of about 12-20
breaths per minute.
When should you stop CPR?
✔✔Stop CPR if the person shows signs of life, such as breathing, or if emergency medical help
arrives and takes over.
What is the first step in CPR for an adult?
✔✔The first step is to check the person’s responsiveness by tapping them and shouting to see if
they respond.
What should you do if you are alone and need to perform CPR on an infant?
✔✔If you're alone with an infant, perform 2 minutes of CPR and then call for help.
How should you perform CPR on a choking adult?
✔✔Perform chest compressions and follow up with attempts to clear the airway by using the
Heimlich maneuver if necessary.
3
, What is the correct ratio of chest compressions to rescue breaths for CPR on a child?
✔✔The ratio is 30 chest compressions to 2 rescue breaths for a child.
How do you deliver a rescue breath to an infant?
✔✔Cover the infant’s nose and mouth with your mouth, and gently give a breath until the chest
rises.
What should you do if an AED prompts “no shock advised”?
✔✔If the AED says “no shock advised,” continue CPR, providing chest compressions and
rescue breaths until emergency medical help arrives.
When can you switch roles while performing CPR?
✔✔You should switch roles every 2 minutes to prevent fatigue and maintain effective chest
compressions.
How can you tell if CPR is being performed effectively?
✔✔Effective CPR is characterized by visible chest rise with each rescue breath and the ability to
compress the chest to the appropriate depth.
4
