What does heart rate variability mean below normal range?

Heart rate variability below normal range refers to the difference between successive heartbeat cycles below normal value, which is considered to be related to physiological factors and pathological factors.

Heart rate variability mainly reflects the change of successive line cycle differences. If heart rate variability is lower than normal range, it may be related to physiological factors. If certain drugs are being used, it can gradually return to normal after a period of rest. In addition, heart rate variability lower than the normal range may also be related to disease factors, common for heart disease, such as myocardial ischemia, coronary heart disease, heart failure, etc., such diseases will lead to vagus nerve and sympathetic nerve mutual restriction, thus affecting heart rate variability. In addition, heart rate variability may also be diabetes, thyroid dysfunction, menopause syndrome, renal insufficiency and other diseases symptoms. It is

recommended to actively find out the cause, diagnosed after receiving treatment, so as not to delay the disease.