What technique is used to assess a newborn's heart rate?

The technique of palpating the umbilical pulse is an effective method for assessing a newborn's heart rate. This approach is particularly relevant right after birth when the newborn is still attached to the umbilical cord, as it provides an immediate means to evaluate circulation and cardiac function. The umbilical pulse is a reflection of the fetal heart rate, which can indicate the well-being of the newborn.

In the context of the other options, while checking the brachial pulse and listening with a Doppler device can be used for heart rate assessment, they are generally more relevant in slightly older infants or children, rather than as an immediate technique for newborns. Evaluating peripheral pulse strength may not provide an adequate indication of heart rate in a newborn since it can be more challenging to assess accurately immediately after birth. Thus, palpating the umbilical pulse is the most direct and appropriate method for assessing a newborn’s heart rate in the immediate postnatal period.