Diving First Aid for Professional Divers Practice Test

When determining a pulse on an infant, the correct site is the brachial artery. This artery is located in the upper arm, and due to the smaller size of an infant's body compared to an adult, it is the most accessible and reliable location for checking the pulse. The brachial artery can be found by placing two or three fingers on the inside of the upper arm, between the elbow and the shoulder. This method of assessing the pulse is particularly important in infants, as they can be more challenging to assess than older children or adults.

In contrast, the carotid artery, femoral artery, and radial artery are typically not recommended for infants. The carotid artery is situated in the neck and may be difficult to palpate accurately in small patients due to their anatomy. The femoral artery is located in the groin, and while it can be assessed in infants, it is less practical for commonly checking a pulse. The radial artery, found at the wrist, is also not ideal for infants because their wrist is too small, making it hard to detect a pulse in that area.