Sudden heart attack self-help methods are as follows: First, supraventricular tachycardia attack, previous history of supraventricular tachycardia, sudden feeling of extreme tachycardia, panic, similar to previous attacks, you can try to cough, stimulate the walls of the throat to induce nausea, cold water bath face, deep breathing and then breath holding and then exhaling, ineffective or aggravation of the timely medical care. Second, angina attack, previous coronary heart disease, chest pain and chest tightness during activity or emotional excitement, similar to previous attacks, immediately stop the activity, stabilize emotions, rest and sublingual nitroglycerin a piece of ineffective people do not delay, timely medical care. Third, if the chest pain lasts for a long time, accompanied by sweating, near-death feeling, containing nitroglycerin is ineffective, it is highly suspicious of acute myocardial infarction. At this time to lie down to rest, stabilize emotions, oxygen when possible, and can chew aspirin tablets 300mg, while quickly dial 120 emergency telephone, keep the phone open.