自动血压计测量值一致性评估方法的应用

Consistency Evaluation Method in Accurate Measurement of Automated Sphygmomanometer

目的:通过对自动血压计和标准汞柱式血压计测量值的对照分析,探讨2种测量方法定量测量结果一致性评估方法在自动血压计测量准确性方面的应用。方法:采用组内相关系数评价重复测量的信度,利用Bland-Altman分析方法评估自动血压计和标准汞柱式血压计测量值的一致性。同时,比较欧洲高血压协会(European Society of Hypertension,ESH)关于血压计评估国际标准的评测结果。结果:该次被测的自动血压计未通过ESH的评估方案。汞柱式血压计收缩压测量值的组内相关系数为0.937,舒张压为0.849;被测血压计收缩压测量值的组内相关系数为0.944,舒张压为0.929。收缩压测量值差值的95%一致性界限为-10.20～16.94 mmHg(1mmHg=133.322Pa),舒张压为-6.25～11.69 mmHg。结论:正常状态下,Bland-Altman分析和ESH评估方案的判断结果是相同的。

Objective To compare blood pressures results measured by automated sphygmomanometer and standard mercury sphygmomanometer, and to investigate the application of measurements consistency evaluation method in accurate measurement of automated sphygmomanometer. Methods Intraclass correlation coefficient was used to estimate the reliability of repeated measurements, and Bland-Altman method was adopted to evaluate the consistency between automated sphygmomanometer and standard mercury sphygmomanometer. Meanwhile, the results were compared with protocol of European Society of Hypertension. Results The tested automated sphygmomanometer did not adapt to the criteria of European Society of Hypertension. The intraclass correlation coefficient of mercury sphygmomanometer was 0.937 for systolic blood pressure, 0.849 for diastolic blood pressure. The intraclass correlation coefficient of tested sphygmomanometer was 0.944 for systolic blood pressure, 0.929 for diastolic blood pressure. The 95% consistency interval was （-10.20 to 16.94）mmHg for systolic blood pressure and （-6.25 to 11.69）mmHg for diastolic blood pressure. Conclusion Normally, Bland-Altman method has the same judgment result with protocol of European Society of Hypertension.