The heart rate is normal when it is 80 beats/minute, and the normal heart rate is 60~100 beats/minute. Physiological factors or pathological factors can cause the heart rate to increase or decrease.
1. Increased heart rate is commonly seen in excitement, agitation, smoking, drinking, etc. It can also be seen in fever, infection, shock, hypoxia, anemia, hyperthyroidism, heart failure and other pathological conditions. Heart rate increase can also occur after atropine, epinephrine, ephedrine and other drugs.
2. Decreased heart rate can be seen in healthy people who have been engaged in heavy physical labor for a long time in sports and staff. It can also be seen in hypothyroidism, increased intracranial pressure and other pathological conditions. Drugs such as digitalis, quinidine, etc., can lead to a decrease in heart rate.
Heart rate exceeds the normal range and prompt medical attention is recommended.