Repeated blood pressure (BP) measurements allow better control of hypertension. Current measurements rely on cuff-based devices. The aim of the present study was to compare BP measurements using a novel cuff-less photoplethysmography-based device to a standard sphygmomanometer device. Males and females were recruited from within the general population who arrived at a public BP screening station. One to two measurements were taken from each using a sphygmomanometer-based and the photoplethysmography-based devices. Devices were considered equal if the mean difference between paired measurements was below 5 mmHg and the Standard Deviation (SD) was no greater than 8 mmHg. Agreement and reliability analyses were also performed. 1057 subjects were included in the study analysis. There were no adverse events during the study. The mean (± SD) difference between paired measurements for all subjects was -0.1 ± 3.6 mmHg for the systolic and 0.0 ± 3.5 mmHg for the diastolic readings. We found 96.31% agreement in identifying hypertension and an Interclass Correlation Coefficient of 0.99 and 0.97 for systolic and diastolic measurements, respectively. The photoplethysmography-based device was found similar to the gold-standard sphygmomanometer-based device with high agreement and reliability levels. The device might enable a reliable, more convenient method for repeated BP monitoring.

重复血压 (BP) 测量可以更好地控制高血压。目前的测量依赖于基于袖带的设备。本研究的目的是比较使用新型无袖光电体积描记法设备和标准血压计设备进行的血压测量。男性和女性是从到达公共血压筛查站的普通人群中招募的。使用基于血压计和基于光电体积描记法的设备对每个进行一到两次测量。如果配对测量值之间的平均差低于 5 mmHg 并且标准偏差 (SD) 不大于 8 mmHg，则认为设备相等。还进行了一致性和可靠性分析。研究分析包括 1057 名受试者。研究期间没有发生不良事件。所有受试者的配对测量值之间的平均 (± SD) 差异为收缩压读数 -0.1 ± 3.6 mmHg 和舒张压读数 0.0 ± 3.5 mmHg。我们发现高血压识别的一致性为 96.31%，收缩压和舒张压测量的组间相关系数分别为 0.99 和 0.97。人们发现，基于光电体积描记法的设备与基于金标准血压计的设备相似，具有很高的一致性和可靠性。该设备可能为重复血压监测提供一种可靠、更方便的方法。