The Microlife WatchBP O3 and Omron RS6 devices failed to fulfill ESH-IP accuracy criteria in obese subjects, with mean systolic differences from mercury standard of 0.3±7.8 mmHg and 2.7±9.9 mmHg.
Observational (n=33)
Do the Microlife WatchBP O3 and Omron RS6 devices accurately measure blood pressure in obese subjects compared to a mercury standard?
The Microlife WatchBP O3 and Omron RS6 blood pressure devices failed validation criteria in obese subjects and cannot be recommended for this population.
Objective: Two oscillometric devices, the Microlife WatchBP O3 ® and the Omron RS6 ® , designed for self-blood pressure measurement were evaluated according to the European Society of Hypertension (ESH)-International Protocol (IP) Revision 2010 in the obese population. Methods: The Microlife WatchBP O3 measures blood pressure (BP) at the brachial level and the Omron RS6 measures BP at the wrist level. The ESH-IP revision 2010 includes a total of 33 subjects. The difference between observers’ and device BP values was calculated for each measure. A total of 99 pairs of BP differences were classified into three categories (≤5, ≤10, and ≤15 mmHg). The protocol procedures were followed precisely in each of the two studies. Results: Microlife WatchBP O3 and Omron RS6 failed to fulfill the criteria of the ESH-IP. The mean differences between the device and the mercury readings were: 0.3±7.8 mmHg and −1.9±6.4 mmHg for systolic BP and diastolic BP, respectively, for Microlife WatchBP O3, and 2.7±9.9 mmHg for SBP and 3.5±11.1 mmHg for diastolic BP for Omron RS6. Conclusion: Microlife WatchBP O3 and Omron RS6 readings differing from the mercury standard by more than 5, 10, and 15 mmHg failed to fulfill the ESH-IP revision 2010 requirements in obese subjects. Therefore, the two devices cannot be recommended for use in obese subjects. Keywords: Microlife WatchBP O3, Omron RS6, validation, blood pressure measurement, home blood pressure measurement, obese population, European Society of Hypertension, International Protocol
Azaki et al. (Wed,) conducted a observational in Obesity (n=33). Microlife WatchBP O3 and Omron RS6 devices vs. Mercury standard readings was evaluated on Fulfillment of the European Society of Hypertension-International Protocol Revision 2010 criteria. The Microlife WatchBP O3 and Omron RS6 devices failed to fulfill ESH-IP accuracy criteria in obese subjects, with mean systolic differences from mercury standard of 0.3±7.8 mmHg and 2.7±9.9 mmHg.