Final answer:
In adult BLS, a carotid pulse should be checked for no more than 5 to 10 seconds to avoid delaying the start of chest compressions during CPR.
Step-by-step explanation:
In adult Basic Life Support (BLS), it is recommended to check for a carotid pulse for no more than 5 to 10 seconds. During a cardiac arrest situation, time is critical, and a prolonged search for a pulse can delay the start of chest compressions, which are vital for maintaining blood circulation, especially to the brain.
The positioning of the heart in the torso allows for cardiopulmonary resuscitation (CPR) to be effective by manually compressing the blood within the heart when performed with proper technique and depth. The recommended compression depth is at least 5 cm and a rate of 100 compressions per minute. Probing for the carotid pulse is part of the initial assessment in CPR but should not detract from the urgency of beginning compressions as soon as possible after recognizing cardiac arrest.