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Background and objective <p>To validate a simple, inexpensive method for intrarenal pressure monitoring during flexible ureteroscopy by comparing a handheld pressure meter with a sphygmomanometer in a bench-top balloon model.</p> Methods <p>A balloon was mounted on the distal tip of an 8.4 Fr flexible ureteroscope and connected to a three-way stopcock at the irrigation port. This setup enabled simultaneous pressure recording using a mercury sphygmomanometer (gold standard) and the Wellead handheld pressure meter (Shenzen JCR Medical Technology, China). Thirty paired measurements were obtained across clinically relevant pressure ranges. Agreement was evaluated using paired t-test and Bland–Altman analysis.</p> Key findings and limitations <p>Paired t-test showed no significant difference between devices (t = 0.314, <i>p</i> = 0.756). The mean bias (Wellead – sphygmomanometer) was 0.02 mmHg with a standard deviation of 0.35 mmHg. The 95% limits of agreement were narrow (−0.664 to +0.704 mmHg). Bland–Altman analysis demonstrated excellent concordance without proportional bias.</p> Conclusions and clinical implications <p>This study validates two inexpensive, reproducible methods for intrarenal pressure monitoring via the irrigation port of a flexible ureteroscope: the sphygmomanometer and the Wellead handheld meter. Both demonstrated excellent agreement, offering globally accessible options for laboratory research and potential clinical use.</p>

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Two cost-effective techniques for intrarenal pressure monitoring during flexible ureteroscopy: validation of a handheld pressure meter against a sphygmomanometer in a bench-top model

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月29日

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  • Mohamed Omar,
  • Mohamed F. Sultan,
  • Kemal Sarica,
  • Ioannis Kartalas Goumas,
  • Vineet Guahar,
  • Manoj Monga

摘要

Background and objective

To validate a simple, inexpensive method for intrarenal pressure monitoring during flexible ureteroscopy by comparing a handheld pressure meter with a sphygmomanometer in a bench-top balloon model.

Methods

A balloon was mounted on the distal tip of an 8.4 Fr flexible ureteroscope and connected to a three-way stopcock at the irrigation port. This setup enabled simultaneous pressure recording using a mercury sphygmomanometer (gold standard) and the Wellead handheld pressure meter (Shenzen JCR Medical Technology, China). Thirty paired measurements were obtained across clinically relevant pressure ranges. Agreement was evaluated using paired t-test and Bland–Altman analysis.

Key findings and limitations

Paired t-test showed no significant difference between devices (t = 0.314, p = 0.756). The mean bias (Wellead – sphygmomanometer) was 0.02 mmHg with a standard deviation of 0.35 mmHg. The 95% limits of agreement were narrow (−0.664 to +0.704 mmHg). Bland–Altman analysis demonstrated excellent concordance without proportional bias.

Conclusions and clinical implications

This study validates two inexpensive, reproducible methods for intrarenal pressure monitoring via the irrigation port of a flexible ureteroscope: the sphygmomanometer and the Wellead handheld meter. Both demonstrated excellent agreement, offering globally accessible options for laboratory research and potential clinical use.