What is the appropriate action if the victim is an infant and is unresponsive?

When dealing with an unresponsive infant, the first and most critical action is to check for breathing and begin CPR if the infant is not breathing or only gasping. This procedure is essential because an unresponsive infant is at high risk for cardiac arrest, and prompt intervention can significantly increase the chances of survival.

In assessing whether to start CPR, evaluating the infant's breathing is crucial. If no normal breathing is detected, immediate CPR should be initiated without delay. This involves performing chest compressions and rescue breaths tailored for an infant, which not only supports circulation but also provides necessary oxygenation.

The other options, while they may contain some merit or importance in a broader context of emergency response, do not address the immediate and life-saving measures needed when an infant is found unresponsive. For instance, not shaking the infant is a cautionary approach, but it does not actively contribute to the necessary intervention. Calling out for help can be beneficial in certain situations, yet it may waste critical time if CPR is not started first. Performing back blows may be relevant in cases of choking but is not the appropriate response for an unresponsive infant who may require CPR.

Therefore, beginning CPR following the assessment of breathing ensures that the most critical intervention is executed as swiftly