The golden resuscitation time of sudden cardiac death is 4-6 minutes. If the body occurs cardiac arrest, it is easy to lead to ischemic and hypoxic symptoms in tissues and organs, once more than 6 minutes, it can damage the brain function and is difficult to recover. Most patients have only family members or friends around within 6 minutes after sudden cardiac death. If a patient is found to have fainted, the first thing to determine is whether there is breathing, heartbeat, etc. If there is still no response after calling the patient’s name, you can touch the aorta, then perform chest compressions, and send the patient to the doctor immediately to avoid serious consequences.