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To determine âcessation of all functions of the entire brain, including the brain stem,â physicians must determine the presence of unresponsive coma, the absence of brainstem reflexes, and the absence of respiratory drive after a CO 2 challenge.
If the pulse is bounding and you're trying to calm them down, you may opt for an extended or more frequent pulse assessment, at least for rhythm and quality if not rate. In an unconscious/unresponsive adult, the preferred pulse point is the carotid artery. There are several reasons for this, some of which are complementary points to those of the conscious patient: 1. Unlike a conscious patient, the chief question we're trying to answer when checking the pulse is if they have one.