Key result
UA-85X devices meet ESH and AAMI accuracy standards with a ~0.3 mmHg mean systolic difference.
Why the study?
The accuracy of the A&D UA-85X blood pressure measurement device needed validation according to European Society of Hypertension and medical instrumentation standards.
Does the A&D UA-85X device accurately measure blood pressure compared to a mercury standard?
Cross-Sectional
Does the A&D UA-85X device accurately measure blood pressure compared to a mercury standard?
The A&D UA-85X blood pressure monitor meets the accuracy requirements of the ESH and AAMI protocols for both systolic and diastolic blood pressure measurement.
Answers are grounded in this paper and cite their sources.
May support UA-85X adoption where validated monitors are required; leaves open outcome studies in broader populations.
To determine the accuracy of the UA-85X (UA-851, 852, 853, 854, and 855) device developed by the A&D company. Device evaluations were performed using the protocol of the European Society of Hypertension (ESH). Monitor performance was assessed in relation to patients' age, arm circumference, and systolic and diastolic blood pressures (BPs). The device was assessed in two different samples according to ESH requirements, which are based on four zones of accuracy differing from the mercury standard by 5, 10, 15 mmHg, or more. The UA-85X passed all three phases of the protocol for systolic BP and diastolic BP. Mean BP difference between device and observers was -0.3+/-4.4 mmHg for systolic BP and -2.7+/-4.8 mmHg for diastolic BP. These passed the Association for the Advancement of Medical Instrumentation standard requirements. In multivariable analyses, systolic BP discrepancies between device and observers were related to age (P=0.03) and diastolic BP discrepancies were related to diastolic BP level (P<0.001). These data show that the UA-85X satisfies the recommended ESH and Advancement of Medical Instrumentation accuracy levels for both systolic BP and diastolic BP.
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Bonso et al. (2008) reported a cross-sectional. UA-85X device vs. Mercury standard / observers was evaluated on Accuracy of the UA-85X device for systolic and diastolic blood pressure (MD -0.3). The UA-85X device satisfied ESH and AAMI accuracy levels, with a mean difference from observers of -0.3±4.4 mmHg for systolic and -2.7±4.8 mmHg for diastolic blood pressure.
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