The body's pulse waves can be recorded using a specially made sphygmograph. The ascending branch reflects the passive expansion of the aorta during rapid atrium ejection, while the descending branch reflects the contraction in the middle and late stages of ejection. Then the atrium and left ventricle, the pressure in the atrium is lower than the pulmonary artery pressure, so the arteriovenous flow reverses, causing the closure of the aortic valve, forming the descending branch notch N on the curve, also called the descending gorge or the heavy wave trough. Because the closure of the aortic valve allows the reversed blood to flow forward again, and an ascending wavelet transformation appears after the notch, which is called the descending wave or the heavy wave. The normal adult rate is 60 to 100 times per minute, usually 70 to 80 times per minute, and the average is about 72 times per minute. For children and adolescents, 60 to 75 is appropriate 65 to 80 is appropriate for work 85 to 110 is appropriate during pregnancy For middle-aged and elderly people, 70 to 90 is appropriate For the elderly, 75 to 90 is appropriate Normally, the pulse rate of a person is regular and it is not easy for the pulse rate to have different time intervals. A normal person's pulse is of equal height and does not easily alternate between high and low. In addition, exercise and emotional excitement can increase the pulse rate, while rest and sleep can slow down the pulse rate. When an adult's pulse exceeds 100 beats per minute, it is called tachycardia; when it is less than 60 beats per minute, it is called bradycardia. There are many diseases in clinical medicine, especially heart disease, which can cause changes in pulse rate. Therefore, accurate measurement of pulse rate is an indispensable examination item for patients. Traditional Chinese medicine regards pulse diagnosis as an important method of treating diseases. |
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