<prompt> In CPR, number of chest compression per minute in an adult:30-50 per minute50-72 per minute100-120 per minute120-200 per minute  <response>: Rate : 100-120 minute Depth: Adult - 5-6 cm Pediatric - 4-5 cm Infants - Atleast 4 cm Allow complete recoil for proper filling of heaAdequate ventilation- avoid excessive ventilation 