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<p>Home blood pressure monitoring (HBPM) is essential for long-term hypertension management, but its accuracy and reliability is questionable due to user inconsistencies and non-standard usage conditions. This study compared two validated HBPM devices – a wrist-based and a reference upper-arm monitor – in a home-like setup where participants placed the devices themselves. A total of 121 participants underwent four concurrent blood pressure (BP) measurements, with two taken in each arm, followed by a crossover of devices between arms after the initial two readings. Wrist-derived BP readings were higher than upper-arm measurements. With higher blood pressure levels, both devices exhibited greater bias, accompanied by reduced precision in systolic BP measurements. Additionally, hypertension classification showed only moderate agreement (Cohen’s kappa=0.58). The wrist monitor tended to over-diagnose hypertension and exhibited greater variability than the upper-arm device. These findings highlight the need for more guidance and education as well as critical evaluation of home blood pressure measurements provided by patients.</p><p></p>

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Comparison of two validated oscillometric devices in a home-like setup reveals pronounced blood pressure differences and reduced precision

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月9日

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  • Joachim Zahnd,
  • Brian Thompson,
  • Pierre-Antonin Rigon,
  • Patrick Taffé,
  • Gregoire Wuerzner

摘要

Home blood pressure monitoring (HBPM) is essential for long-term hypertension management, but its accuracy and reliability is questionable due to user inconsistencies and non-standard usage conditions. This study compared two validated HBPM devices – a wrist-based and a reference upper-arm monitor – in a home-like setup where participants placed the devices themselves. A total of 121 participants underwent four concurrent blood pressure (BP) measurements, with two taken in each arm, followed by a crossover of devices between arms after the initial two readings. Wrist-derived BP readings were higher than upper-arm measurements. With higher blood pressure levels, both devices exhibited greater bias, accompanied by reduced precision in systolic BP measurements. Additionally, hypertension classification showed only moderate agreement (Cohen’s kappa=0.58). The wrist monitor tended to over-diagnose hypertension and exhibited greater variability than the upper-arm device. These findings highlight the need for more guidance and education as well as critical evaluation of home blood pressure measurements provided by patients.