What check is performed to ensure effective CPR on an infant?

Checking the pulse at the brachial artery is the correct choice for ensuring effective CPR on an infant. The brachial artery, located in the upper arm, is the most accessible site for assessing pulse in infants, particularly those under one year old. This is due to the anatomical differences in infants compared to older children and adults, where other pulse sites may be less palpable.

In emergency situations, quickly verifying the presence of a pulse helps to determine the appropriate response, such as whether immediate CPR is needed. During CPR, it is crucial to ensure that the compressions are effective and the circulation is supported. The brachial pulse is a reliable indicator for infants since their hearts are small and their circulatory systems are still developing, making perfusion assessment at other sites less practical.

Using the brachial artery for pulse checks allows caregivers to effectively monitor the infant's status and make informed decisions about the continuation or modification of their resuscitation efforts.