Effect of left ventricular hypertrophy on heart rate variability in essential hypertension
2000
Objective:To investigate the changes of heart rate variability (HRV) in essential hypertension with left ventricular hypertrophy (LVH) and its correlation with LVH.Method:84 essential hypertensive patients and 31 control persons received examinations of 24 hour Holter electrocardiogram and echocardiogram.Result:Only pNN50 in hypertension with non LVH was significantly lower than in control (P 0.01 ).However,all HRV parameters in hypertension with LVH were significantly lower than in control.Compared with non LVH group,the SDNN,SDANN index and SDNN index in LVH group decreased significantly (P 0.01 ,P 0.01 ,P 0.05 ).The SDNN,SDANN index and SDNN index in hypertension were negatively related to left ventricular mass index.Conclusion:HRV was reduced in essential hypertension with LVH,and there was negative relation between HRV and the severity of LVH in hypertension.
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