Free BLS Automated External Defibrillator (AED) Use Questions and Answers — Questions and Answers

Question 1: What is the first step when using an AED?

Apply pads
Turn on the AED (Correct answer)
Deliver a shock
Begin chest compressions

Correct answer: Turn on the AED

The very first step when using an Automated External Defibrillator (AED) is to turn it on. This activates the device, allowing it to provide voice prompts and instructions that guide the rescuer through the subsequent steps, such as applying pads and analyzing the heart rhythm. Following these prompts ensures correct and timely use.

Question 2: Where should AED pads be placed on an adult victim?

Both on the chest
One on chest, one on back
Upper right chest and lower left side (Correct answer)
On both shoulders

Correct answer: Upper right chest and lower left side

For an adult victim, AED pads should be placed on the upper right side of the chest, just below the collarbone, and on the lower left side of the chest, below the armpit. This placement ensures that the electrical current passes through the heart, maximizing the chances of successful defibrillation.

Question 3: What should you do if the AED advises a shock?

Start compressions
Check the pulse again
Deliver the shock immediately (Correct answer)
Turn off the AED

Correct answer: Deliver the shock immediately

If the AED advises a shock, the rescuer must ensure everyone is clear of the patient and then deliver the shock immediately. Delaying defibrillation significantly reduces the chances of survival for a victim in ventricular fibrillation. Following the AED's prompt is crucial for timely intervention.

Question 4: What is the correct action immediately after a shock is delivered?

Wait for further instructions
Turn off AED
Check breathing
Resume CPR (Correct answer)

Correct answer: Resume CPR

Immediately after a shock is delivered by an AED, the rescuer must resume chest compressions without delay. There should be no pause to check for a pulse or rhythm, as early resumption of compressions is critical to maintain blood flow to the brain and heart. The AED will re-analyze the rhythm after two minutes of CPR.

Question 5: Can AEDs be used on children under 8 years old?

No, AEDs are for adults only
Only if CPR fails
Yes, with pediatric settings or pads (Correct answer)
Only with manual defibrillators

Correct answer: Yes, with pediatric settings or pads

AEDs can indeed be used on children under 8 years old, but it's crucial to use appropriate equipment. Pediatric pads or a pediatric attenuator are specifically designed to deliver a lower, safer dose of electrical energy suitable for a child's smaller body. Using these specialized settings ensures effective defibrillation while minimizing the risk of delivering an excessive shock.

Question 6: What should you do if a victim has a hairy chest and you need to apply AED pads?

Do nothing
Shave the area or use a second set of pads (Correct answer)
Apply pads to arms
Move pads to the back

Correct answer: Shave the area or use a second set of pads

For an AED to deliver an effective shock, the pads must have firm, direct contact with the victim's skin. A hairy chest can prevent the pads from adhering properly, leading to poor electrical conduction and a failed shock. Quickly shaving the area or using a second set of pads to 'wax' away the hair ensures optimal pad-to-skin contact, which is vital for successful defibrillation.

Question 7: Why must no one touch the victim during AED analysis?

It reduces oxygen
It delays CPR
It can cause injury to the rescuer
It can result in incorrect analysis (Correct answer)

Correct answer: It can result in incorrect analysis

During AED analysis, the device is detecting the victim's heart rhythm to determine if a shock is needed. Any movement or contact from a rescuer can create electrical interference, which the AED might misinterpret as a heart rhythm or an artifact. This interference can lead to an inaccurate analysis, potentially delaying a life-saving shock or causing the AED to advise against a necessary one.

Question 8: What is the benefit of early defibrillation in cardiac arrest?

It prevents brain damage
It eliminates the need for CPR
It increases survival rates (Correct answer)
It prevents heart attacks

Correct answer: It increases survival rates

The most common cause of sudden cardiac arrest in adults is ventricular fibrillation, an erratic electrical activity in the heart. Early defibrillation is the only effective treatment to stop this abnormal rhythm and allow the heart's natural pacemaker to resume a normal rhythm. The sooner defibrillation occurs, the higher the chance of successful resuscitation and survival, as the heart muscle begins to die rapidly without effective blood flow.

Question 9: What precaution should be taken if the victim is wet before using an AED?

Dry the chest quickly (Correct answer)
Apply pads over clothing
Place pads on legs
Wait until the chest is fully dry

Correct answer: Dry the chest quickly

Water conducts electricity, and using an AED on a wet victim can be dangerous for both the victim and the rescuer. The electrical current could spread across the victim's chest or to the rescuer, reducing the effectiveness of the shock or causing injury. Quickly drying the chest ensures the electrical current is delivered directly through the heart, maximizing effectiveness and safety.

Free BLS Automated External Defibrillator (AED) Use Questions and Answers

What is the first step when using an AED?