Accuracy and precision of continuous, non-invasive blood pressure devices: a systematic review and meta-analyses.
meta_analysis · Level I
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- Record sourced from PubMed, PMID 42290528.
- Also identified by DOI 10.1111/anae.70250.
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Abstract
Reliable continuous non-invasive blood pressure monitoring technology should support clinicians to maintain blood pressure within appropriate limits peri-operatively. Previous studies have shown conflicting results regarding measurement accuracy. This systematic review and six meta-analyses evaluated the accuracy and precision of non-invasive continuous arterial blood pressure measurement technologies (volume clamp technology, applanation tonometry and photoplethysmography) compared with invasive arterial measurement in adults. We analysed pooled bias (mean difference between non-invasive and invasive measurement), standard deviation and limits of agreement. In each meta-analysis, mean arterial pressure (MAP), systolic blood pressure (SBP) and diastolic blood pressure (DBP) were analysed separately. Acceptability was defined according to Association for the Advancement of Medical Instrumentation® (AAMI) criteria. Sixty-five studies were included: two meta-analyses for volume clamp technology (ClearSight™, CNAP™); three meta-analyses for applanation tonometry (T-Line™, Vasotrac™ and N-CAT™); and one meta-analysis for photoplethysmography technology. For volume clamp technologies, none met AAMI criteria for bias and SD in relation to MAP, SBP and DBP. T-Line, Vasotrac and N-CAT met the AAMI criteria for bias for MAP (2.53 mmHg, 0.36 mmHg, -0.37 mmHg), SBP (-0.07 mmHg, 1.20 mmHg, -3.68 mmHg) and DBP (3.09 mmHg, 1.09 mmHg, 0.84 mmHg), respectively. In terms of standard deviation, only N-CAT (MAP 6.97 mmHg, SBP 7.14, mmHg, DBP 6.55 mmHg) met AAMI criteria for all blood pressure parameters. Photoplethysmography technology met AAMI criteria for bias (MAP -0.09 mmHg, SBP 0.49 mmHg, DBP -0.26 mmHg) and standard deviation (MAP 6.86 mmHg, DBP 6.38 mmHg). Overall, the AAMI criteria for bias and SD were not fulfilled for most of the devices tested and wide limits of agreement are of concern. One applanation tonometry device (N-CAT) shows promise. Clinicians should be aware of the lack of interchangeability with invasive blood pressure management.