老年患者血压变异性影响因素分析

探讨年龄,高血压、平均动脉压和晨峰血压等因素对老年患者血压变异性的影响。方法:325例老年患者根据血压水平分为:高血压组(225例)和非高血压组(100例),对两组患者行动态血压监测,并进行统计分析。结果:与非高血压组相比,老年高血压患者收缩压变异(10.82±2.72)mmHg比(14.18±2.98)mmHg]和舒张压变异(8.12±1.83)mmHg比(9.05±1.94)mmHg]明显增加(P均<0.01);但其收缩压的变异性不随年龄增加而增加(t=1.277,P=0.215)。直线相关分析表明晨峰收缩压和收缩压变异呈明显正相关(r=0.342,P<0.05),平均舒张压和舒张压变异呈明显的正相关(r=0.323,P<0.05)。结论:老年高血压患者血压变异是增加的,晨峰血压和平均舒张压是老年收缩压变异的重要影响因素。

Analysis of influencing factors of blood pressure variability in aged patients

Objective：To explore influence of factors,including hypertension,age,mean arterial pressure and morning blood pressure surge（MBPS）,on blood pressure variability（BPV）in aged patients.Methods：According to blood pressure level,a total of 325aged patients were divided into hypertension group（n=225）and non-hypertension group（n=100）.Both groups received ambulatory blood pressure monitoring and the results were statistically analyzed.Results：Compared with non-hypertension group,there were significant increase in systolic blood pressure（SBP）variability（10.82±2.72）mmHg vs.（14.18±2.98）mmHg]and diastolic blood pressure（DBP）variability （8.12±1.83）mmHg vs.（9.05±1.94）mmHg]in hypertension group（P＆lt;0.01both）;But their SBP variability did not rise along with age increase（t=1.277,P=0.215）.Rectilinear correlation analysis indicated that morning SBP surge was positively correlated with SBP variability（r=0.342,P＆lt;0.05）,mean DBP was positively correlated with DBP variability（r=0.323,P＆lt;0.05）.Conclusion：Blood pressure variability increases in aged patients with hypertension.Morning blood pressure surge and mean DBP are important influencing factor of blood pressure variability in aged patients.