Automated blood pressure measurement in atrial fibrillation: validation process modification and evaluation of a novel professional device which detects atrial fibrillation and adapts its blood pressure measurement algorithm

This study evaluated the accuracy of a novel professional oscillometric upper-arm cuff device (Microlife WatchBP Office), which has an algorithm for detecting AF and then applies an AF-specific BP measurement algorithm. BP variability, which is inherently increased in AF patients, was considered in the analysis. Methods: Subjects with sustained AF were included in a validation study using the same arm sequential measurement method of the Universal Standard (ISO 81060-2:2018) for special populations. Analysis was performed in all subjects and separately in those with and without high reference BP variability (>12/8 mmHg SBP/DBP). Results: Thirty-five subjects with 105 paired test/reference BP measurements were included (mean age 76.3 ± 8.4 years, reference SBP/DBP 128.2 ± 19.5/72.5 ± 12.1 mmHg, pulse rate 68.3 ± 14.9 bpm). Validation Criterion 1 (mean difference ± SD) was 0.0 ± 7.7/0.2 ± 7.0 mmHg in all 105 BP pairs (threshold ≤5 ± 8 mmHg). Criterion 1 was 0.5 ± 6.1/−0.2 ± 6.8 mmHg in 18 subjects (54 BP pairs) with low reference BP variability and −0.6 ± 9.2/0.6 ± 7.3 mmHg in 17 (51 pairs) with high variability. Criterion 1 did not differ in pulse rate
Source: Journal of Hypertension - Category: Cardiology Tags: ORIGINAL PAPERS: Blood pressure measurement Source Type: research