Key result
Oscillometric BP measurements match auscultation within 5 mmHg at specific device-dependent ratio ranges.
Why the study?
Does the shape of oscillometric pulse amplitude envelopes affect the accuracy of oscillometric blood pressure measurements compared to auscultation in patients?
Cross-Sectional (n=124)
Does the shape of oscillometric pulse amplitude envelopes affect the accuracy of oscillometric blood pressure measurements compared to auscultation in patients?
The accuracy of oscillometric blood pressure measurements compared to auscultation varies depending on the characteristic ratios of the oscillometric pulse amplitude envelopes, with different optimal ranges for different devices.
May warrant device-specific calibration awareness in practice; leaves open prospective validation of ratio thresholds.
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Amoore et al. (2007) conducted a cross-sectional in Blood pressure measurement (n=124). Oscillometric blood pressure measurement vs. Auscultatory blood pressure measurement was evaluated on Paired differences between oscillometric and auscultatory reference pressures. Differences between oscillometric and auscultatory blood pressure measurements varied by characteristic ratios, with good agreement (within 5 mmHg) occurring at specific, device-dependent ratio ranges.
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