Hypertension (HTN) is a common health problem and a major cardiovascular risk factor. Accurate measurement of blood pressure (BP) is mandatory for proper diagnosis and follow-up. The aim of this study was to evaluate the accuracy of mercury sphygmomanometer BP-measuring devices in public hospitals in Cairo, Egypt. Fifty public hospitals were included, and 10% of all mercury sphygmomanometer devices in each hospital were tested. Assessment included physical condition (e.g., mercury status, lid of the device, state of the rubber tubes), leakage rate, and calibration accuracy (as compared with a reference device). Devices were approved as accurate when they could successfully pass all three assessment tests. The total number of sphygmomanometer devices was 465. The overall pass rate was 1.3% (six devices). Twenty-five (5.2%) devices passed all of the physical tests, 50 (10.8%) passed the leakage test, and 50 (16.5%) passed the calibration accuracy test. There were 162 (34.8%) devices that showed a high leakage rate (>80 mmHg) and thus were not tested for calibration accuracy. In conclusion, most of the mercury sphygmomanometer devices in hospitals are neglected and not checked regularly for any errors. A plan should be made to gradually replace those failed devices with new, validated, and well-calibrated devices, preferably devices that do not contain mercury.

译文

高血压(HTN)是常见的健康问题,也是心血管的主要危险因素。准确测量血压(BP)对于正确诊断和随访是必不可少的。这项研究的目的是评估埃及开罗公立医院水银血压计BP测量设备的准确性。其中包括50家公立医院,并且对每家医院中所有汞血压计设备的10%进行了测试。评估包括身体状况(例如,汞状态,设备的盖子,橡胶管的状态),泄漏率和校准精度(与参考设备相比)。当设备可以成功通过所有三个评估测试时,它们被认为是准确的。血压计设备总数为465。总合格率为1.3%(六个设备)。二十五(5.2%)的设备通过了所有物理测试,其中50(10.8%)通过了泄漏测试,还有50(16.5%)通过了校准精度测试。有162个(34.8%)的设备显示出高泄漏率(> 80 mmHg),因此没有经过校准精度测试。总之,医院中的大多数汞血压计设备都被忽略,没有定期检查是否有任何错误。应该制定计划,逐步用新的,经过验证且经过良好校准的设备(最好是不含汞的设备)替换那些发生故障的设备。

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