Abstract
To determine the accuracy of the AViTA BP636 upper-arm home blood pressure (BP) monitor in general populations with small to extra-large arms according to the ANSI/AAMI/ISO Universal Standard (ISO 81060-2 : 2018/Amd1 : 2020). The AViTA BPM636 was utilized on 85 adult participants with upper-arm circumferences ranging from 15 to 52 cm, and four cuffs of different sizes (small: 15-22 cm, normal: 22-33 cm, large: 33-42 cm, and extra large: 42-52 cm) were used in this study. The recruitment fulfills the criteria of the ANSI/AAMI/ISO Universal Standard 81060-2 : 2018/Amd1 : 2020 in the general population using the same arm sequential BP measurement method. For validation criterion 1, the mean ± SD of the differences between the test device and reference blood pressure readings was -0.35 ± 4.68/0.56 ± 3.93 mmHg (systolic/diastolic) for adults. The mean difference of SBP between the test device and the reference device was -0.35 mmHg with a SD of 3.50 mmHg, wh{ich was within the acceptable range for criterion 2 (i.e. less than 6.93 mmHg) Similarly, the mean difference in DBP was 0.56 mmHg with a SD of 3.38 mmHg, which also met the criterion 2 (i.e. within 6.91 mmHg). AViTA BPM636 passed the criteria of the ANSI/AAMI/ISO 81060-2 : 2018/Amd 1 : 2020 protocol. It can be recommended for home-based BP measurements in the general population and people with extra-large arms ranging from 42 to 52 cm.
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