In adults, we call it tachycardia when the heartbeat exceeds 100 beats per minute. Generally, our heartbeat is around 60 to 80 beats per minute, and few people can reach 90 to 100 beats per minute. Tachycardia is a type of arrhythmia, and there are also types of bradycardia, even if it is not slow or slow, it is a rhythm abnormality. So the cause, like other arrhythmias, the onset can also be divided into physiological and pathological, physiological, such as running heart rate increased, you drink some wine, or you do some physical work or emotional excitement, this time the heart rate is accelerated, this is the physiological tachycardia, most cases are sinus tachycardia, this case does not need to deal with, rest and rest will be fine. Other diseases such as fever, anemia, hyperthyroidism, bleeding, painful irritation, hypoxia, heart failure and cardiomyopathy can also cause tachycardia, which we call pathological tachycardia. One of the more common tachycardias we call an idiopathic ventricular tachycardia, which may not be uncommon in clinical practice, and even in some patients from childhood, which is a congenital cause. In addition, the more common tachycardias are atrial fibrillation, atrial flutter, atrial tachycardia and so on. Tachycardia can be caused by problems with the heart muscle, blood vessels, or heart valves. There are also some systemic diseases such as anemia and hyperthyroidism that can also lead to increased heart rate.