The causes of rapid heart rate in the elderly include myocardial ischemia, drug effects, electrolyte disorders, anemia, hyperthyroidism, etc. Rapid heart rate can be divided into sinus tachycardia, atrial tachycardia, rapid atrial fibrillation, supraventricular tachycardia, ventricular tachycardia, etc. The specific causes are as follows: 1. Sinus tachycardia: Mostly seen in smoking, tea, coffee, alcohol, and emotional excitement, physical activity, and may also be caused by fever, hyperthyroidism, anemia, shock, myocardial ischemia, heart failure, drugs such as atropine, etc. 2, 2, Atrial tachycardia: Mostly seen in heart attacks, chronic lung disease, heavy alcohol consumption, various metabolic diseases, low potassium, etc. 3, Atrial fibrillation: Mostly seen in emotional excitement, after surgery, or exercise, heavy alcohol consumption, as well as heart and lung disease, wind heart disease, hyperthyroidism, coronary heart disease, hypertensive heart disease, etc. 4, Supraventricular tachycardia: Generally 5, ventricular tachycardia: such as coronary heart disease, heart attack, cardiomyopathy, heart failure can be caused.