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在流行病学调查和临床已广泛应用任选零位(random zero)血压计测量血压。这种血压计装有一个旋转的轮而产生可变化的基线(0位),从测得的血压扣除基线的变动值即获得矫正的血压,可减少观察者的偏见和数值误差。制造厂家认为除了由于测量误差的轻微负相关外,在0位水平和矫正的血压间应该是一致的。 Gaudemaris等报告用0位血压计按任选0位和标准血压计测得的血压间的差异与0位差异星明
Blood pressure is measured with random zero sphygmomanometers widely used in epidemiological investigations and clinics. The sphygmomanometer has a rotating wheel that produces a variable baseline (0-position), and subtracting baseline changes from measured blood pressure to obtain corrected blood pressure reduces observer bias and numerical errors. The manufacturer believes that in addition to a slight negative correlation due to measurement error, the level between 0 and the corrected blood pressure should be consistent. Gaudemaris and other reports with a 0 sphygmomanometer by optional 0 and the standard sphygmomanometer measured the difference between blood pressure and 0 differences Star Ming