Application of heart rate variability in cardiovascular neurogenic syncope

Objective: To analyze the application of heart rate variability in cardiovascular neurogenic syncope.Methods: Fifty patients with cardiovascular neurogenic syncope and 50 health people from healthy check-up crowd were divided into the observation group and control group,respectively.The heart rate variabilities between two groups were compared using electrocardiogram workstation.Results: The differences of overall standard deviation and mean standard deviation between two groups were not statistically significant(P>0.05).The differences of the square root in the difference between the mean square,and more than 50 ms of percentage in the difference between adjacent phase between two groups were statistically significant(P<0.01).The frequency domain indexes in observation group were significantly lower than that in control group(P<0.01).Conclusions: Heart rate variability is a reliable index to evaluate the autonomic nervous activity,which can be used as a valuable index of cardiovascular neurogenic syncope.