The Takeda Model UA-751 blood pressure and pulse rate monitor.

The performance of the Takeda Model UA-751 oscillometric blood pressure and pulse rate monitor was compared with readings taken using auscultatory technique and the mercury manometer. Significant correlations (p less than 0.0001) were found between the clinical standard and the UA-751 on measurements of systolic (r = 0.85) and diastolic (r = 0.77) blood pressure. Comparison of the pulse rate measurements obtained using the Grass Polygraph with those of the UA-751 resulted in a reliable correlation (r = 0.98; p less than 0.0001), as well. The results provide empirical support for the validity of the UA-751 under controlled laboratory conditions. However, the results suggest heightened error in the measurement of systolic pressure when the UA-751 is used by individuals who have high blood pressures.