Is a heart rate of 120 normal?

Heart rate 120/min does not belong to the normal range.

Heart rate refers to the number of beats per minute of the heart, which is caused by myocardial contraction caused by electrical signals generated by pacemaker points in the heart. This pacemaker point is located in the right atrium of the heart, which is called sinus node. Normal adult heart rate is 60-100 beats/min under quiet state. The heart rate of the examiner is obviously higher than the normal range, which may be caused by anemia, hyperthyroidism and other factors.

If the heart rate is found to be too high for a long time, laboratory examination, echocardiography and other medical examinations should be carried out in time to make a clear diagnosis and prevent delay in treatment.