Pulse Check During CPR When performing cardiopulmonary resuscitation (CPR), if signs of return of spontaneous circulation (ROSC) are observed: Stop CPR and automated external defibrillator use. Check for breathing and a carotid or femoral pulse. Pauses should be minimized to less than 10 seconds. Routine pulse checks without signs of ROSC are not recommended. Rhythm Check Timing Immediately after a shock is delivered, cardiopulmonary resuscitation (CPR) should be resumed for 2 minutes before pausing compressions to conduct a rhythm check. Based on the clinical situation, performing rhythm analysis after defibrillation may be considered by healthcare professionals. After every 2 minutes of CPR, the rhythm should be reassessed (while minimizing interruptions to CPR). If there are physiologic signs of return of spontaneous circulation, briefly pausing compressions for rhythm analysis may be considered.