BLS Quiz
Questions: 16 · 10 minutes
1. When giving a rescue breath during CPR, what indicates an effective breath?
Several short puffs are given without watching the chest
The breath is delivered as forcefully as possible, regardless of chest movement
The breath lasts about one second and produces visible chest rise
The breath lasts at least five seconds to fill the lungs completely
2. A team pauses compressions to perform a necessary BLS task. What should its goal be?
Keep the interruption as short as possible, generally under 10 seconds
Resume only after a full pulse check by every rescuer
Use the pause to reposition the person, even when positioning is adequate
Pause for about 30 seconds so everyone can prepare
3. While an AED is analyzing the heart rhythm, what must rescuers do?
Continue compressions so blood flow is not interrupted
Hold the person’s arms still while touching the chest
Remove the pads to prevent an accidental shock
Make sure nobody is touching the person
4. An AED arrives while CPR is in progress. What should a rescuer do first with the device?
Turn it on and follow its spoken or visual prompts
Wait until several more CPR cycles have been completed
Deliver a shock before attaching the pads
Check the person’s pulse for a full minute
5. A lay rescuer witnesses an adult suddenly collapse. Emergency services have been called, but the rescuer is unable to provide rescue breaths. What should the rescuer do?
Perform continuous chest compressions and use an AED as soon as one is available
Wait for trained responders without touching the person
Place the person in a seated position to improve airflow
Check for a pulse repeatedly without beginning compressions
6. Which description matches standard adult AED pad placement?
Place one below the right collarbone and the other on the left side of the chest below the armpit
Place both pads side by side over the center of the chest
Place one pad on the abdomen and the other over the throat
Place both pads on the person’s back at the same height
7. You approach a person who has collapsed near moving traffic. What should you do first?
Begin checking for a pulse while standing in the roadway
Immediately move the person before checking the surroundings
Assess the scene for hazards and approach only when it is safe to do so
Look for identification before taking any other action
8. Approximately how deep should adult chest compressions be?
Only deep enough to create visible chest movement
About 2-3 cm, or approximately 1 inch
About 7-8 cm, or approximately 3 inches
About 5-6 cm, or approximately 2-2.4 inches
9. An adult is unresponsive, is only gasping, and has no pulse when checked promptly. A coworker is beside you. What is the best response?
Place the adult in the recovery position and monitor the gasping
Continue checking for a pulse for about one minute before deciding
Give several rescue breaths before activating the emergency response system
Tell the coworker to call emergency services and get an AED while you begin CPR
10. During compressions, another rescuer notices that you are leaning on the chest between pushes. Why should you stop leaning?
Leaning makes rescue breaths enter too quickly
Full recoil helps the heart refill with blood between compressions
Leaning causes the AED to deliver a weaker shock
Full recoil eliminates the need to maintain compression depth
11. A trained BLS provider checks an unresponsive adult for breathing and a pulse. How long should this check take?
At least 20 seconds
No more than 10 seconds
About 15 seconds
Until the provider is completely certain, regardless of time
12. A conscious infant has signs of a severe airway obstruction. Which response is appropriate?
Perform abdominal thrusts using a closed fist
Sweep the mouth repeatedly with a finger, even when no object is visible
Alternate five back slaps with five chest thrusts while supporting the infant
Hold the infant upright and wait for the obstruction to clear
13. A person is removed from water, is in cardiac arrest, and has a wet chest. How should the AED be used?
Wait for the entire body to air-dry before starting CPR or using the AED
Move away from standing water if needed, quickly dry the pad areas, and apply the AED pads
Skip the AED because it cannot be used after water exposure
Place the pads over wet clothing to avoid delaying the shock
14. During a meal, an adult suddenly cannot speak, breathe, or cough effectively and makes little or no sound. What does this most strongly indicate?
A mild obstruction that should be managed by offering water
Normal coughing that does not require attention
A severe airway obstruction requiring immediate choking assistance
Cardiac arrest requiring an immediate AED shock without further assessment
15. What is the recommended chest-compression rate for adult CPR?
60-80 compressions per minute
100-120 compressions per minute
130-150 compressions per minute
80-90 compressions per minute
16. Where should the hands be placed for adult chest compressions?
Over the upper end of the breastbone near the throat
Over the pointed lower tip of the breastbone
Directly over the left side of the chest
On the lower half of the breastbone in the center of the chest