The heart rate drops from 80 to 60 beats/minute, which may be related to physiological factors such as sleep, pathologic factors such as hypothyroidism, drug factors such as metoprolol, and other factors such as hypoxia.
1-physiological factors: when the human body is in a quiet state or sleep resting state, the body’s energy consumption is reduced, the physiological functions will be slowed down, at this time, the heart rate will also slow down accordingly, the normal heart rate of more than 60 ~ 80 beats / min, is a normal physiological phenomenon.
2-Pathological factors: hypothyroidism, atrioventricular block, myocarditis and other diseases will lead to slow heart rate, the heart rate is mostly less than 60 beats / min.
3-Drug factors: some drugs such as metoprolol can inhibit sympathetic nerve activity and myocardial contractility, slowing down the heart rate, this time under the guidance of the doctor to adjust the dose of drugs or change the drug can improve the symptoms of heart rate decline.
4-Other factors: when severe hypoxia or hypothermia, the myocardium does not have enough energy, the contractility decreases, and the heart rate also decreases, and the general removal of hypoxia or hypothermia can be restored.
If the heart rate drops from 80 beats/min to 60 beats/min with the above mentioned conditions, it is recommended to go to the hospital immediately to receive medical treatment and to clarify the cause of the disease.