Why is my heart beating so fast?

The heart plays an extremely important role in everyone's physical health, so we are all very concerned about the heart rate. Under normal circumstances, the heart rate has a certain measurement benchmark. When an adult's heart beats more than 100 times per minute at rest, it is considered to have a tachycardia. It is also divided into physiological and pathological types, and the causes of different types are also different. If it is pathological, medical treatment is needed in time.

1. Heartbeat measurement benchmark

Lie down for 5 minutes before taking the test to be accurate. The test cannot be used as a benchmark when you are uncomfortable, after exercise, sick, or very hungry. Calculated per minute, the mortality rate is lower when the heart rate is 45-70 beats per minute. Starting from 45 beats, for every 10 beats increase, the mortality rate increases by 9%. When resting quietly, the heart rate is greater than 90, and the mortality rate begins to increase significantly. For people who exercise regularly, a heart rate of more than 40 beats per day is good. For those who do not exercise regularly, a heart rate of more than 40 beats per day is not good.

2. Why does my heart beat so fast?

An adult's heart beats about 70 to 80 times per minute, and 60 to 100 beats per minute is normal. Normally, if an adult's heart beats more than 100 beats per minute when at rest, it is medically considered "tachycardia"; if it is less than 60 beats per minute, it is considered "bradycardia." The heart beats faster when working than when resting, women beat faster than men, children beat faster than adults, and newborns can beat up to 150 times per minute. On average, if a person lives to be 100 years old, his or her heart beats a total of about 4 billion times. Because athletes exercise regularly, their myocardial contractility is strong and the amount of blood returning to the heart during diastole is also large. Therefore, when athletes are at rest, a heart rate of less than 60 beats/minute is enough to ensure blood supply to the body. Some can reach 48-50 beats/minute. They have the ability and endurance to exercise.

Heartbeat is a medical term. There are two types of tachycardia: physiological and pathological. An increased heart rate when running, drinking, doing heavy physical labor, or being emotionally excited is called physiological tachycardia; tachycardia caused by high fever, anemia, hyperthyroidism, bleeding, pain, hypoxia, heart failure, cardiomyopathy, etc. is called pathological tachycardia. "Tachycardia" is not a disease name, but a symptom. Pathological tachycardia can be divided into two types: sinus tachycardia and paroxysmal supraventricular tachycardia. Sinus tachycardia is characterized by a gradual increase and decrease in heart rate. The causes of sinus tachycardia are mostly functional, but can also be seen in organic heart disease and extracardiac factors. Its production is mainly related to sympathetic nerve excitement and decreased vagal nerve tone.