What not to do when someone has a cardiac arrest?

When someone has a cardiac arrest, Do Not Resuscitate (DNR) them. Cardiopulmonary resuscitation (CPR) a life-sustaining act that has various techniques to restore the heartbeat or breathing. Patients with serious infections/cancer patients have no chance of recovery after CPR. On the other hand, patients survived after CPR end up with brain damage/disabilities. All these factors brought the DNR orders in 1970s into use. As per the DNR order, no one should perform CPR if the patient's heartbeat or breathing stops.