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July 1912

THE STANDARDIZATION OF BLOOD PRESSURE READINGS BY MEANS OF AN AUTOMATIC DEVICE FOR INDICATING SYSTOLIC AND DIASTOLIC PRESSURES IN CHILDREN

Am J Dis Child. 1912;IV(1):46-48. doi:10.1001/archpedi.1912.04100190049009
Abstract

One cannot but be struck with the variation in systolic and diastolic blood-pressure readings on the same individual as recorded by different observers. In a recent test three separate observations were made on a series of ten patients, by three groups of observers working independently The patients were in bed, did not change position between readings and the observations were all taken within half an hour. Each group of observers was supplied with a similar instrument. The first set used the older method of estimating systolic pressure by tactile pressure over the radial artery with the oscillation of mercury as the indicator for the diastolic pressure; the second group used the auscultatory method for both systolic and diastolic pressure, while the third employed the auscultatory method for systolic pressure and the Fedde pith-ball indicator for the diastolic. The observers were familiar with the apparatus, being accustomed to taking blood-pressures as

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