This video shows the rescuer palpating for a carotid pulse. Note that he palpates in the groove between the larynx and the anterior border of the sternocleidomastoid muscle. The rescuer should palpate for 5-10 seconds. If the pulse is absent, the rescuer should immediately commence chest compressions in concert with the chest ventilation. If a pulse is present, the rescuer should resume ventilating the chest.