J Korean Acad Fam Med.
1997 Dec;18(12):1500-1507.
Accuracy of the sphygmomanometer for measuring of blood pressure
Abstract
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BACKGROUND: Recently, it is substituted automatic sphygmomanometer for mercury sphygmomanometer. But it seems to be insufficient for data of its accuracy. A sample accurate automatic sphygmomanometer could have an important role in the management of hypertension. The aim of this study is to assess the accuracy of the automatic sphygmomanometer that is used common practice and at home.
METHODS
We collected 247 patients who visited the department of Famiiy Practice of Taegu medical center from April to August 1996. BP was measured sequentially same arm by standard device(mercury. sphygmomanometer), test device A(A&D TM-2650), test device B(seine SE-2000). We assessed the automatic sphygmomanometer according to the standards set out by the British Hypertension Society(BHS) protocol and the American Association for the Advancement of Medical Instrumentation(AAMI). These data were analysed using pearson' correlation and paired t-test.
RESULTS
Test device A was highly correlated to mercury sphygmomanometer in systolic and diastolic BP(r=0.90, r=0.88). Also test device B was highly correlated to that(r=0.90, r=0.87). The mean difference between BP value obtained by the standard device and those obtained by the test device A were 0.59+/-7.66mmHg systole(mean+/-SD) and 3.83+/-6.43mmHg diast.ole, whereas the difference between the former and those obtained by the test device B were 1.70+/-7.99mmHg systole.and 5.58+/-6.38mmHg diastole. Comparing to standard device, there were a signifioant difference except systolic BP of test device A(P<0.05). According to the criteria of the AAMI, the diastolic BP of test device B was not enough and according to the criteria of the BHS, the diastolic BP of both test device were not enough.
CONCLUSIONS
Both test device were highly correlated to mercury sphygmomanometer. But according to the criteria of the BHS and AAMI, there were not enough. Because the use of automatic sphygmomanometer was popularized, I think that further study will be required to assess of accuracy.
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