Clinical Evaluation of the Accuracy of Electronic Home Blood Pressure Measuring Devices

Choo, Jina

Abstract

PURPOSE: This study evaluated the accuracy of electronic devices compared with mercury sphygmomanometer. Of 132 outpatients with electronic devices, 77 who possessed oscillometric cuff devices participated in this study. METHOD: When the blood pressure was measured, all electronic devices were connected by means of a Y-connector to a mercury sphygmomanometer. Using the simultaneous same arm approach, each comparison was carried out three times at 2-minute intervals.
RESULTS
Compared with the mercury sphygmomanometer, the electronic devices underestimated systolic and diastolic blood pressure, respectively by 4.0 +/- 5.8mmHg and 2.5 +/- 6.7mmHg, which satisfies the standard error range of the American Association for the Advancement of Medical Instrumentation. According to the British Hypertension Society criteria, these differences achieved C grade for both systolic and diastolic pressure. For the graphical analysis, the differences had a tendency to fulfill the permitted error limits in both diastolic and systolic blood pressure. Moreover, the purchase duration was not correlated with the accuracy of electronic devices.
CONCLUSION
These results indicate that difference in blood pressure between electronic devices and mercury sphygmo- manometer is within the standard error. Therefore, electronic blood pressure measuring devices may be useful for therapeutic self-management of hypertension.