What is the artery located in the upper arm that serves as the pulse check site during infant CPR?

The correct answer is the brachial artery, which is the primary site for checking pulse in infants during CPR and other medical assessments. The brachial artery runs along the inner side of the upper arm and is accessible for palpation in infants, making it suitable for determining circulation when performing cardiopulmonary resuscitation. In young children and infants, heart rates can be fast, so having the ability to quickly and accurately assess the pulse is vital in emergency situations.

Other options, while they may be pulse sites for older children and adults, are not appropriate for infants. The radial artery is located at the wrist and is typically used for checking pulse in older children and adults due to its accessibility. The femoral artery is found in the groin area and is used in specific situations, primarily in adults or in emergencies. The ulnar artery, found on the opposite side of the wrist from the radial artery, is less commonly used for pulse checks in any age group. Therefore, for infants, the brachial artery is specifically emphasized as the optimal site for pulse assessment.