1. Which hand technique is used for chest compressions on an infant?
For an infant, chest compressions are done with the two-thumb encircling technique. The other options are not the standard infant compression method.
Cardiac emergencies are among the most important topics on the pool lifeguard theory exam. This part covers recognising cardiac arrest, performing high-quality CPR, and using an automated external defibrillator (AED).
Under ANZCOR guidance, CPR uses a compression-to-ventilation ratio of 30:2 for all ages. Topics include high-quality CPR, AED use and safety, and the difference between a heart attack and cardiac arrest.
Questions last reviewed July 2026 · ANZCOR guidelinesHow our questions are made
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For an infant, chest compressions are done with the two-thumb encircling technique. The other options are not the standard infant compression method.
A person with a heart attack is usually responsive and may complain of chest pain or discomfort. Cardiac arrest is different because the person is unresponsive and not breathing normally.
The CPR ratio is 30:2 for all ages, including infants, whether there is one rescuer or more than one. A 15:2 ratio is not used here.
People must not touch the casualty while the AED is analysing the rhythm or delivering a shock. Touching can interfere with analysis and is unsafe during a shock.
Cardiac arrest is suspected when a person is unresponsive and not breathing normally, or is only gasping. Chest pain alone can happen with a heart attack, but that is different from cardiac arrest.
If the AED does not advise a shock, continue CPR and keep following the voice prompts. The AED may recheck the rhythm later.
The CPR ratio is 30:2 for children, adults, and infants. The same ratio is used for single and multiple rescuers in this chapter.
Unresponsive and abnormal breathing means you should start CPR and get emergency help and an AED as soon as possible. Waiting, feeding, or sitting the person up delays life-saving care.
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