The study objective was to compare blood pressure (BP) measurement by the Hawksley random-zero sphygmomanometer and the standard mercury sphygmomanometer. Comparison of simultaneous 'blind' BP measurements were made using the Hawksley random-zero sphygmomanometer and the standard mercury sphygmomanometer linked by a Y-connector to a single cuff, in the general practice and office environments. Sixty five healthy volunteers and general practice patients, aged between 20 and 50 years (SBP range 82-184 mm Hg, DBP range 38-112 mm Hg), were studied. Each had three blood pressure measurements taken. Mean BPs recorded by the Hawksley random-zero sphygmomanometer were lower than those recorded by the standard mercury sphygmomanometer. The Hawksley random-zero sphygmomanometer underestimated SBP by 1.3 mm Hg (95% CI 0.9-1.8 mm Hg) and DBP by 1.7 mm Hg (95% CI 1.1-2.3 mm Hg). These differences between instruments were independent of BP level both for systolic and diastolic measurements. An overview including this study and six other published reports describing nine studies examining the performance of the Hawksley random-zero sphygmomanometer suggested a similar degree of underestimation for SBP (mean difference 1.35 mm Hg, 95% CI 1.24-1.46 mm Hg). Underestimation of DBP appeared greater (mean difference 2.54 mm Hg, 95% CI 2.43-2.65 mm Hg) but was reduced when two outlying studies were removed from analysis (mean 1.97, 95% CI 1.85-2.09 mm Hg). We conclude that the Hawksley random-zero sphygmomanometer underestimates systolic and diastolic pressure, when compared with the standard mercury sphygmomanometer. However, the degree of underestimation is small and appears consistent across a wide range of blood pressure levels.(ABSTRACT TRUNCATED AT 250 WORDS)

译文

:研究目的是比较Hawksley随机零血压计和标准汞血压计的血压测量。在一般实践和办公环境中,使用Hawksley随机零血压计和通过Y型接头连接到单个袖带的标准汞血压计,对同时进行的“盲”血压测量进行了比较。研究对象是年龄在20至50岁(SBP范围为82-184 mm Hg,DBP范围为38-112 mm Hg)之间的六十五名健康志愿者和普通患者。每个人都进行了三个血压测量。 Hawksley随机零血压计记录的平均BP低于标准汞血压计记录的平均BP。 Hawksley随机零血压计低估了SBP 1.3 mm Hg(95%CI 0.9-1.8 mm Hg)和DBP 1.7 mm Hg(95%CI 1.1-2.3 mm Hg)。仪器之间的这些差异与收缩压和舒张压测量的BP水平无关。包括本研究在内的概述和其他六份已发表的报告,其中描述了九项研究霍克斯利随机零血压计性能的研究,表明对SBP的评估程度相近(平均差异1.35 mm Hg,95%CI 1.24-1.46 mm Hg)。 DBP的低估似乎更大(平均差异为2.54 mm Hg,95%CI为2.43-2.65 mm Hg),但是当从分析中移除两项外围研究时,DBP的低估有所降低(平均1.97,95%CI为1.85-2.09 mm Hg)。我们得出的结论是,与标准汞血压计相比,Hawksley随机零血压计低估了收缩压和舒张压。但是,低估的程度很小,并且在广泛的血压水平上似乎保持一致。(摘要截断为250个字)

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