An attack of coronary artery disease can result in low heart rate and blood pressure. An attack of coronary artery disease is indicative of severe myocardial ischemia, and in some patients, an attack of myocardial ischemia may result in low heart rate and blood pressure, such as in lower wall myocardial ischemia. Lower wall myocardial ischemia may lead to increased vagal tone, and patients may experience a decrease in blood pressure and heart rate. Coronary heart attack if the heart rate and blood pressure drop, should be given in a timely manner to replenish body fluids, if necessary, to give the heart rate of the drug treatment, there is a rapid improvement of coronary artery angiography, to understand the degree of coronary artery lesions, timely treatment, to avoid the occurrence of cardiogenic shock. Coronary heart attack should be closely monitored vital signs, and under the guidance of the physician to quickly give treatment to prevent serious complications.