Studies on cardiac vagus nerve activity and circadian rhythm in patients with essential hypertension / 重庆医科大学学报

ABSTRACT

Objective:To measure the cardiac vagus nerve activity and its circadian rhythm in patients with essential hypertension(EH group) and normontensive controls (NC group),and to study the relationship between the cardiac vagus nerve activity and blood pressure.Methods:By dynamic electrocardiogram and ambulatory blood pressure monitoring,HF,PNN 50 and their circadian rhythm were compared between the EH group and NC group,and the relationship between HF,PNN 50 and blood pressure was analyzed.Results:During 24 hours,waking and sleeping hours,HF,PNN 50 were significantly lower(P