Pereira E, Prys-Roberts C, Dagnino J, Anger C, Cooper G M, Hutton P
Eur J Anaesthesiol. 1985 Mar;2(1):11-20.
The accuracy of the indirect auscultatory method, using Korotkoff sounds for determination of arterial pressures, was investigated by comparison with direct intra-arterial measurements. Eight hundred and sixty-three comparisons were made in 25 patients aged between 27 and 75 years over blood pressures ranging from 59 to 235 mmHg for systolic and 28 to 145 mmHg for diastolic. The regression equation for all systolic pressure measurements was y = 13.9 + 0.81x, and for all diastolic pressure measurements was y = 21.4 + 0.71x. Although there was a significant (P less than 0.001) correlation coefficient between direct and indirect measurements for both systolic (r = 0.93) and diastolic pressures (r = 0.79), the 95% confidence limits (+/- 22 mmHg for systolic and +/- 19 mmHg for diastolic) were very wide, reflecting the influences of observer variation and other sources of error.
通过与直接动脉内测量结果进行比较，研究了使用柯氏音来测定动脉血压的间接听诊法的准确性。对25名年龄在27至75岁之间的患者进行了863次比较，收缩压范围为59至235 mmHg，舒张压范围为28至145 mmHg。所有收缩压测量的回归方程为y = 13.9 + 0.81x，所有舒张压测量的回归方程为y = 21.4 + 0.71x。尽管收缩压（r = 0.93）和舒张压（r = 0.79）的直接测量与间接测量之间均存在显著（P小于0.001）的相关系数，但95%置信区间（收缩压为±22 mmHg，舒张压为±19 mmHg）非常宽，这反映了观察者差异和其他误差来源的影响。
