Key result
The optimum cuff width for indirect blood pressure measurement is proportional to the logarithm of arm circumference (cuff width=9.34 log10 arm circumference), reducing error to near zero.
Why the study?
Does adjusting blood pressure cuff width to 40% of arm circumference accurately measure blood pressure compared to direct radial artery measurement?
Population
50 subjects
Comparison
Indirect blood pressure measurement using the… vs Direct blood pressure measurement using a radial…
Design
Cross-sectional, nonblinded
Authors
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May reduce BP measurement error via log-proportional cuff sizing; leaves open prospective validation before clinical adoption.
Cross-Sectional (n=50)
Nonblinded
Does adjusting blood pressure cuff width to 40% of arm circumference accurately measure blood pressure compared to direct radial artery measurement?
The optimum cuff width for indirect blood pressure measurement is proportional to the logarithm of the arm's circumference, challenging the standard AHA recommendation of a fixed 40% ratio.
Marks et al. (2000) reported a cross-sectional. Indirect blood pressure measurement with varying cuff width to arm circumference ratios vs. Direct blood pressure measurement via radial artery line was evaluated on Error (defined as indirect blood pressure minus direct blood pressure). The optimum cuff width for indirect blood pressure measurement is proportional to the logarithm of arm circumference (cuff width=9.34 log10 arm circumference), reducing error to near zero.
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