Biomedical subjects

W D Crews

Publications and source records attributed to W D Crews.

20 records · Page 2Linked to original sources

PubMedDate not supplied

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.

Adult↗

PubMedDate not supplied

An evaluation of the DS-175, DS-145, and DS-115, digital blood pressure/pulse meter devices.

The performances of three electronic digital blood pressure/pulse meter models, Nissei DS-175, DS-145, and DS-115, were compared with measurements obtained using the mercury sphygmomanometer and auscultatory technique. Significant correlations (p less than 0.01) were found between the accepted medical criterion and the three models evaluated for both systolic (r = 0.64 to 0.74) and diastolic (r = 0.58 to 0.61) pressure measurements; however, the accuracies of the devices were deemed inadequate. The DS-175 was found to significantly overestimate both systolic (p less than 0.025) and diastolic (p less than 0.05) pressures. Furthermore, all models tended to overestimate low blood pressures, whereas high blood pressures were underestimated. Variables associated with home use by the lay person are also discussed.

Adult↗