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Research Article

One size does not fit all: universal cuff overestimates oscillometric blood pressure in persons with large arm circumference

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Article: 2338208 | Received 06 Feb 2024, Accepted 27 Mar 2024, Published online: 09 Apr 2024

Figures & data

Figure 1. The Bland–Altman plot for persons with a mid-upper arm circumference > 32 cm (n = 64) illustrates the difference between systolic blood pressure measured with the universal cuff (Sy univ) and systolic blood pressure measured with an appropriately sized cuff (Sy appr) plotted against their average. The dashed lines represent mean + 1.96 SD (25.7 mmHg), mean (6.4 mmHg) and mean – 1.96 SD (−13.0 mmHg).

Figure 1. The Bland–Altman plot for persons with a mid-upper arm circumference > 32 cm (n = 64) illustrates the difference between systolic blood pressure measured with the universal cuff (Sy univ) and systolic blood pressure measured with an appropriately sized cuff (Sy appr) plotted against their average. The dashed lines represent mean + 1.96 SD (25.7 mmHg), mean (6.4 mmHg) and mean – 1.96 SD (−13.0 mmHg).

Table 1. Clinical characteristics and sequence of measurements for the persons in the two groups of arm circumference.

Table 2. Comparison of blood pressure measured with the universal cuff and an appropriately sized cuff, irrespective of sequence of measurements.

Table 3. Multiple regression with difference in blood pressure (universal cuff – appropriately sized cuff) as dependent variable and sequence of measurement and category of arm circumference as dependent variable.

Table 4. Bladder size, maximal cuff circumference allowing full overlap of Velcro hooks, cuff width and dimension of flexible plastic shield.