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Cuff-associated errors of blood pressure recording in infants and toddlers
Insights
Conventional blood pressure cuffs are inaccurate for children under 4 years old. Alternative methods, like the "separate bladder" technique, provide more reliable systolic blood pressure measurements in this age group.
Area of Science:
- Pediatrics
- Cardiovascular Research
- Medical Device Evaluation
Background:
- Accurate blood pressure measurement is crucial for pediatric health.
- Commercially available cuffs often provide unsatisfactory results in young children.
Purpose of the Study:
- To evaluate the accuracy of conventional blood pressure cuffs in children under 4 years.
- To compare conventional cuffs with alternative methods for systolic blood pressure measurement.
Main Methods:
- Systolic blood pressure was measured in 88 children (<4 years) using conventional cuffs.
- Results were compared with the "separate bladder" method, Pedisphyg cuff, and intra-arterial recording in a subset of patients.
Main Results:
- Conventional cuffs with 4 cm and 5.5 cm bladders significantly overestimated systolic blood pressure.
- Overestimation by conventional cuffs ranged from 13.1 to 13.3 mm Hg.
- The "separate bladder" method, Pedisphyg, and intra-arterial recording yielded comparable results.
Conclusions:
- Conventional cuffs yield inaccurate systolic blood pressure readings in children under 4 years.
- Alternative methods, such as the "separate bladder" technique, are recommended for accurate measurement in this population.
Abstract:
As commercially available cuffs are unsatisfactory, systolic blood pressure (BP) was measured in 88 children aged less than 4 years using a conventional Velcro self-adhesive cuff with inflatable bladder. Results were compared with the "separate bladder" method (where the inflatable bladder is wrapped around the arm and is held by a separate Velcro-band), the Pedisphyg cuff and, in 10 patients, with intra-arterial recording. The last 3 methods gave nearly identical results. In contrast, conventional cuffs with a 4 cm and a 5.5 cm wide bladder considerably over-estimated systolic BP, by 13.3 mm Hg (range -2 to 30) for bladder width 4 cm, and by 13.1 mm Hg (range 4 to 22) for bladder width 5.5 cm, respectively. The conventional bladder-cuff thus yields grossly inaccurate results in young children and should be replaced by an alternative method, e.g. the "separate bladder".