Key result
Cuff measurements systematically underestimate invasive SBP by ~6 mmHg while overestimating DBP with large variability.
Why the study?
Questions remain regarding the accuracy of cuff BP compared with invasive intra-arterial BP, and the physiological factors associated with inaccuracy of cuff and estimated central BP are not fully understood.
Does cuff blood pressure measurement accurately reflect invasive blood pressure?
Does cuff blood pressure measurement accurately reflect invasive blood pressure?
Cuff blood pressure measurements show significant individual variability and inaccuracy compared to invasive measurements, highlighting the need for improved non-invasive BP measurement methods.
Accurate Blood Pressure (BP) measurement is vital for appropriate diagnosis and management of cardiovascular risk. However, questions remain on the accuracy of cuff BP compared with invasive (intra-arterial) BP. Moreover, the critical physiological factors that are associated with inaccuracy of cuff BP and estimated central BP are still not fully understood. Our group has recently conducted a series of individual participant data meta-analyses, and targeted physiology studies to address these questions and build knowledge on possible ways to improve the accuracy of BP measurements. The aim of this review is to detail this work and briefly discuss future directions for the field.
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Dean S. Picone (2020) conducted a review in Blood pressure measurement (n=3,000). Cuff blood pressure measurement vs. Invasive blood pressure measurement was evaluated on Difference between cuff and invasive blood pressure. Cuff systolic blood pressure systematically underestimated invasive brachial systolic blood pressure by 5.7 mmHg and overestimated diastolic blood pressure by 5.5 mmHg, with large individual variability.
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