Jung Mi-Hyang, Kim Gee-Hee, Kim Ji-Hoon, Moon Keon-Woong, Yoo Ki-Dong, Rho Tae-Ho, Kim Chul-Min
aDepartment of Internal Medicine, Division of Cardiology, St Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon bDepartment of Internal Medicine, Division of Cardiology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Blood Press Monit. 2015 Aug;20(4):215-20. doi: 10.1097/MBP.0000000000000121.
Home blood pressure (BP) monitoring offers clinically relevant information enriched with more abundant data. However, there are few studies addressing the reliability of home BP devices and the quality of its data. This study aimed to evaluate the current status of home BP devices in terms of validation and accuracy.
Hypertensive patients with automated upper arm-type BP devices were consecutively enrolled. First, the validation status of each device was assessed through the website. Next, the accuracy of the individual device was evaluated by comparing the mean BP values between the automated device and a mercury sphygmomanometer. Accuracy of the device was defined as having less than a 5 mmHg difference in the mean BP values.
A total of 212 individuals were analyzed; 38.7% (82 of 212) of the participants used validated devices and 85.4% (181 of 212) were accurate. Inaccuracy was more common with nonvalidated devices than validated devices [19.2% (n=25) vs. 7.3% (n=6), P=0.017]. The range of inaccuracy of the validated devices was 6-26 mmHg for the systolic BP and 6-11 mmHg for the diastolic BP.
The present study showed that nonvalidated devices are used widely in clinical practice and a substantial portion is inaccurate. Therefore, recommendation of validated devices should be the first step. Furthermore, all devices need to be examined for accuracy before use irrespective of their validation status.
家庭血压监测可提供具有临床相关性且数据更丰富的信息。然而，针对家庭血压设备的可靠性及其数据质量的研究较少。本研究旨在评估家庭血压设备在验证和准确性方面的现状。
连续纳入使用自动上臂式血压设备的高血压患者。首先，通过网站评估每个设备的验证状态。接下来，通过比较自动设备与汞柱式血压计之间的平均血压值来评估单个设备的准确性。设备的准确性定义为平均血压值差异小于5 mmHg。
共分析了212名个体；38.7%（212名中的82名）参与者使用了经过验证的设备，85.4%（212名中的181名）设备准确。未经验证的设备比经过验证的设备更常出现不准确情况[分别为19.2%（n = 25）和7.3%（n = 6），P = 0.017]。经过验证的设备收缩压不准确范围为6 - 26 mmHg，舒张压不准确范围为6 - 11 mmHg。
本研究表明，未经验证的设备在临床实践中广泛使用，且相当一部分不准确。因此，推荐经过验证的设备应是第一步。此外，无论设备的验证状态如何，在使用前都需要检查其准确性。
