Where should you check for a pulse on an unresponsive adult?

In an unresponsive adult, the carotid artery is the preferred site to check for a pulse. This is because the carotid artery is centrally located and provides a strong pulse that is easier to assess in emergencies. The carotid arteries are situated on either side of the neck and are typically unaffected by peripheral blood flow issues that may complicate pulse detection in the limbs.

The radial artery, while commonly used for assessing the pulse in conscious patients, is more challenging to palpate in an unresponsive individual, particularly if there is any circulatory compromise. The brachial artery is generally used for infants or when checking for pulse in younger patients but is not the best choice for adults. The popliteal artery is located behind the knee and is also not the most accessible location for pulse assessment in an adult, especially if immediate intervention is needed.

In an emergency situation where rapid assessment is critical, the carotid artery provides a reliable indicator of the heart's functionality, making it the optimal choice for checking the pulse in an unresponsive adult.