Generally CPR requires the removal of the bra. Because if the bra is not removed during chest compressions, the palm of the hand will not be able to directly contact the skin of the chest wall during compressions, so that the compression site can not be fixed, and can not play an effective role in compressions. Moreover, the unfixed site of compression can lead to rib fractures and organ damage. In addition, the chest wall is not fully exposed and defibrillation cannot be performed. Normally, CPR is performed only when a patient is in respiratory arrest, which is intended to save the patient’s life. When the patient’s heart stops after one minute, it leads to respiratory arrest, and after four minutes, irreversible damage to the human brain occurs. Therefore, it is recommended that the patient’s family must fully cooperate with the doctor’s resuscitation, not to be too conservative, but to save the patient’s life as the first priority.