How to measure heart rate

Heart rate is an important indicator of human vital signs. The measurement of heart rate is of great significance for guiding and identifying certain diseases. There are many ways to measure heart rate, such as touching the radial artery to calculate, or touching the femoral artery and carotid artery to measure. Generally, the measurement time is more than one minute, and the heart rate per minute is calculated. At this time, the heart rate refers to the quiet heart rate, that is, resting for more than 5-10 minutes in a quiet state. In addition, it can also be measured by instruments, such as ECG, which can also measure heart rate more accurately than pure estimation.