Korean Circulation Journal

The Korean Society of Cardiology (대한심장학회)
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Replacing Mercury Sphygmomanometers With Mercury-Free Sphygmomanometers for the National Health Survey in Children: Direct Comparisons Applying Two Types of Mercury-Free Sphygmomanometer

  • Sung Hye Kim (Department of Pediatrics, CHA Bundang Medical Center, CHA University) ;
  • Yu-Mi Kim (Department of Preventive Medicine, Hanyang University College of Medicine) ;
  • Seong Heon Kim (Department of Pediatrics, Seoul National University Children's Hospital and Seoul National University College of Medicine) ;
  • Jinho Shin (Division of Cardiology, Department of Internal Medicine, Hanyang University College of Medicine) ;
  • Eun Mi Lee (Division of Cardiology, Department of Internal Medicine, Wonkwang University Sanbon Hospital)
  • Received : 2023.10.06
  • Accepted : 2024.02.23
  • Published : 2024.05.01
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Abstract

Background and Objectives: Blood pressure (BP) measurement using an auscultatory sphygmomanometer is recommended for diagnosing hypertension in children. As mercury sphygmomanometers (MSs) are banned owing to environmental concerns, it is crucial to determine the accuracy of mercury-free sphygmomanometers to replace them. We analyzed the accuracy of these devices to guide the National Survey selection. Methods: BP was measured thrice each with MS, auscultatory device (AD), and oscillometric device (OD) in 104 participants aged 10-18 using the National Survey data. The difference in BP was defined as the difference between MS and other devices. The BP differences, correlations, and influencing factors were analyzed. The frequencies of hypertension were also compared. Results: Systolic BP (SBP) and diastolic BP (DBP) differences between MS and AD were 0.88±3.36 mmHg and 0.63±3.95 mmHg, and those between MS and OD were 0.43±5.83 mmHg and 4.57±6.89 mmHg, respectively. The absolute error of <10 mmHg for DBP between MS and OD was 76%. The concordance correlation coefficient between MS and AD was 0.94 for SBP and 0.90 for DBP, and 0.81 and 0.67, respectively for MS and OD. Arm circumference negatively correlated with BP differences except for SBP between the MS and OD. The frequency of hypertension was not different between MS and AD but was underestimated by OD. Conclusions: AD correlated well with MS, while OD did not, especially for DBP. The superiority of AD over OD suggests AD as a possible alternative for MS in the National Survey.

Keywords

Acknowledgement

This study was partly supported by a grant from the Wonkwang University 2022.

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