Oscillometric blood pressure measurement significantly underestimated systolic and overestimated diastolic pressures compared to intraarterial measurement across all weight groups.
Cross-Sectional (n=188)
Does obesity influence the accuracy of oscillometric blood pressure measurement compared to intraarterial measurement?
Obesity does not independently affect the accuracy of oscillometric blood pressure measurement, though oscillometry inherently has significant error compared to intraarterial measurement across all weight groups.
To assess the effect of obesity on blood pressure measurement the authors obtained simultaneous oscillometric and intraarterial systolic and diastolic blood pressures on 188 lean, overweight, class I/II obese, and class III obese subjects. Oscillometric arm cuff/bladder size was selected in accordance with standard guidelines. Oscillometry significantly underestimated systolic and significantly overestimated diastolic blood pressures in each of the 4 weight groups studied. The differences between oscillometric and intraarterial systolic and diastolic pressures were not significantly different among lean, overweight, class I/II obese, and class III obese subjects. Thus, obesity per se does not influence the accuracy of blood pressure measurement. However, oscillometric blood pressure measurement is associated with significant error when compared to intraarterial blood pressure.
Umaña et al. (2006) conducted a cross-sectional in Obesity (n=188). Oscillometric blood pressure measurement vs. Intraarterial blood pressure measurement was evaluated on Difference between oscillometric and intraarterial systolic and diastolic blood pressures. Oscillometric blood pressure measurement significantly underestimated systolic and overestimated diastolic pressures compared to intraarterial measurement across all weight groups.
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