Studium Patavinum, University of Padova.
Villa Maria Hospital, Padova, Italy.
J Hypertens. 2022 Feb 1;40(2):240-244. doi: 10.1097/HJH.0000000000002998.
Whether oscillometric devices provide accurate measurements of heart rate (HR) is not known. Our aim was to determine the accuracy of an oscillometric device for the measurement of HR during rest and exercise.
The Microlife WatchBP O3, a monitor previously validated for blood pressure measurement, was tested in 36 individuals from the general population (mean age, 72.9 years; 18 men). HR was measured at rest and during stress testing on a cycle ergometer in order to increase HR by 15% or more. HR was computed from the oscillometric waves recorded during the deflation phase of the blood pressure measurement and was compared with HR measured by pulse palpation by two observers.
At rest, the mean device-observer HR difference was 0.9 ± 2.1 bpm. During exercise, the average HR increase was 20.3% and the mean device-observer difference was 0.6 ± 2.6 bpm. The device-observer HR differences were all included within ±6 bpm both at rest and during exercise. Kappa statistics showed a very good agreement between device and observers both at rest (kappa scores, 0.82-0.88) and during exercise (kappa scores, 0.81 and 0.86). The device-observer HR differences were unrelated to the level of HR or to pulse pressure.
The present study shows that the oscillometric technique is able to provide reliable HR measurements during rest and mild exercise. Whether evaluation of HR performance should be included during validation testing of automatic monitors should be established by regulatory bodies.
目前尚不清楚示波法测量设备能否准确测量心率（HR）。本研究旨在评估示波法测量设备在静息和运动状态下测量 HR 的准确性。
此前已对 Microlife WatchBP O3 血压计的准确性进行了验证，本研究纳入了 36 名普通人群（平均年龄 72.9 岁，男性 18 名）。通过在功率自行车上进行运动负荷试验，监测静息状态和运动状态下的 HR。该运动方案旨在使 HR 增加 15%以上。通过测量血压测量时的放气阶段的示波波，计算 HR，并与两名观察者的脉搏触诊测量的 HR 进行比较。
在静息状态下，设备与观察者之间的平均 HR 差值为 0.9±2.1 bpm。在运动状态下，平均 HR 增加了 20.3%，设备与观察者之间的平均差值为 0.6±2.6 bpm。在静息和运动状态下，设备与观察者之间的 HR 差值均在±6 bpm 以内。Kappa 统计显示，在静息状态（Kappa 值，0.82-0.88）和运动状态（Kappa 值，0.81 和 0.86）下，设备与观察者之间的一致性均非常好。设备与观察者之间的 HR 差值与 HR 水平或脉压无关。
本研究表明，示波技术能够在静息和轻度运动状态下提供可靠的 HR 测量值。自动监测器的验证测试是否应纳入 HR 性能评估，应由监管机构确定。
