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Blood pressure in children aged 4–8 years: comparison of Omron HEM 711 and sphygmomanometer blood pressure measurements
  1. P C Midgley1,
  2. B Wardhaugh2,
  3. C Macfarlane2,
  4. R Magowan2,
  5. C J H Kelnar2
  1. 1
    Department of Reproductive and Developmental Medicine, University of Edinburgh, Edinburgh, UK
  2. 2
    Lothian University Hospitals NHS Trust, Royal Hospital for Sick Children, Edinburgh, UK
  1. Correspondence to Dr P Midgley, Neonatal Unit, Simpson CRH, Royal Infirmary of Edinburgh, Little France Crescent, Edinburgh EH16 4SA, UK; paula.midgley{at}


Objective: To collect normal data on blood pressure (BP) in healthy children aged 4–8 and to compare measurements of BP made in the same subjects with a sphygmomanometer and a portable automated oscillometric BP monitor (Omron HEM 711 with child cuff).

Methods: Cross-sectional observational study of 764 children. BP measurements were made at school, using both a sphygmomanometer and an Omron HEM 711. Immediately after the BP measurement children were asked to state which device they preferred (if any).

Results: Children had no preference for whether the sphygmomanometer or the Omron was used. Bland-Altman plots showed a lack of consistency between the two methods of BP measurement. With systolic BP there was a trend for the Omron to underestimate when low and overestimate when high.

Conclusions: Children were equally distributed in their preference for BP device. There was a wide variation between the two methods of BP measurement, which suggests that comparison of automated BP measurements with normative data obtained by sphygmomanometer is not valid.

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  • Funding This study was funded by Ferring Pharmaceuticals.

  • Competing interests None.

  • Provenance and peer review Not commissioned; externally peer reviewed.