中青年H型高血压患者的血压变异性和昼夜节律

目的 探讨中青年H型高血压患者的血压变异性和昼夜节律.方法 对89例中青年轻中度高血压患者的动态血压数据进行回顾性分析,根据血浆同型半胱氨酸(Hcy)水平分为H型高血压组(n=56)和非H型高血压组(n=33),比较两组患者不同时段血压[包括24 h平均收缩压/舒张压(24hSBP/24hDBP),日间平均SBP/DBP(dSBP/dDBP)、夜间平均SBP/DBP(nSBP/nDBP)、清晨6:00-9:00点平均SBP/DBP(mSBP/mDBP)、夜间23:00-24:00点平均SBP/DBP(mnSBP/mnDBP)]及变异性(包括24hSBPV/24hDBPV、dSBPV/dDBPV、nSBPV/nDBPV、mSBPV/mDBPV、mnSBPV/mnDBPV)、日间/夜间平均心率、SBP/DBP杓形比例及血压晨峰(MBPS)的变化.结果 H型高血压组24hSBP、dSBP、nSBP、mSBP均高于非H型高血压组,而24hDBP、dDBP、nDBP、mDBP均低于非H型高血压组,均差异有统计学意义(P＜0.01).H型高血压组24hSBPV、24hDBPV、dSBPV、nDBPV、mSBPV与非H型高血压组比较,差异有统计学意义(P＜0.05).H型高血压组SBP杓形比例及平均MBPS高于非H型高血压组(P＜0.01).结论 中青年H型高血压患者血压变异性在一定范围内增高,与昼夜节律性改变有相关性.

Blood pressure variability and circadian rhythms in young and middle-aged people with H-type primary hypertension

Objective To investigate the blood pressure variability(BPV) and circadian rhythms in young and middle-aged people with H-type hypertension.Methods The ambulatory blood pressure monitoring data from 89 young and middle-aged patients with mild-to-moderate hypertension were retrospectively analyzed.All cases were divided into the H-type hypertension group (n=56) and non-H-type hypertension group(n=33) according to plasma homocysteine(Hcy) level.Blood pressure in different time periods(including 24hSBP/24hDBP,dSBP/dDBP,nSBP/nDBP,mSBP/mDBP,mnSBP/mnDBP),variability(including 24hSBPV/24hDBPV,dSBPV/dDBPV,nSBPV/nDBPV,mSBPV/mDBPV,mnSBPV/mnDBPV),day and night average heart rate,dipper ratio of SBP/DBP and morning blood pressure surge were compared between the two group.Results 24hSBP,dSBP,nSBP and mSBP in the H-type hypertension group were significantly higher than those in the non-H-type hypertension group,while 24hDBP,dDBP,nDBP and mDBP were significantly lower than those in the non-H-type group,the differences were statistically significant(P＜0.01).24hSBPV,24hDBPV,dSBPV,nDBPV and mSBPV had statistically significantly difference between the H-type hypertension group and non-H-type hypertension group(P＜0.05).The dipper ratio of SBP and mean MBPS in the H-type hypertension group were significantly higher than those in the non-H-type hypertension group(P＜0.01).Conclusion Blood pressure variability is increased within a certain range in young and middle-aged patients with H-type hypertension,which is correlated to circadian rhythm changes.