Scholarlink

Background <p>Hands-free patch for continuous quantitative monitoring of common carotid artery (CCA) blood flow has gained interest in recent years. The aim of this study was to evaluate whether carotid minute distance (cMD), collected from a hands-free continuous wave Doppler, allows tracking directional changes incardiac output (CO) induced by passive leg raising (PLR) or dobutamine test in cardiac surgery patients.</p> Methods <p>Cardiac surgery patients with pulmonary artery catheter or transpulmonary thermodilution monitoring were enrolled. Four-quadrant plot was adopted to evaluate the concordance between the percentage change of CCA cMD, which was the product of heart rate and velocity time integral, and invasive CO induced by PLR or dobutamine test.</p> Results <p>A total of 41 cardiac surgery patients were enrolled and 82 pairs of invasive CO and cMD induced by the PLR or dobutamine test were collected in this study. Following the PLR test, significant increases were observed in CO (5.3 ± 1.1 vs. 5.7 ± 1.3 L/min, <i>p</i>﹤0.001). Similarly, dobutamine administration resulted in marked elevations of CO (5.3 ± 1.1 vs. 6.0 ± 1.3 L/min, <i>p</i>﹤0.001). Compared with baseline values, cMD demonstrated significant enhancement following both PLR test and dobutamine challenge. The concordance rate between percentage change of CO and cMD was 98.5%, with the coefficient of determination (R<sup>2</sup>) be 0.58 (<i>p</i>﹤0.001).</p> Conclusions <p>In cardiac surgery patients, cMD collected from a hands-free CADFlow monitor system could reliably tracking directional changes of CO, with thermodilution technique be the reference method.</p> <p><i>Trial registration</i>: ClinicalTrials.gov (NCT05944146). Registered July 12, 2023.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Ability of the continuous carotid Doppler patch to track directional changes in cardiac output in cardiac surgery patients

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月24日

查看全文
  • Guang-wei Hao,
  • Dan-lei Huang,
  • Guo-guang Ma,
  • Ying Su,
  • Jun-yi Hou,
  • Yi-jie zhang,
  • Wen-jun Liu,
  • Zhi-hui Lu,
  • Zhe Luo,
  • Guo-wei Tu

摘要

Background

Hands-free patch for continuous quantitative monitoring of common carotid artery (CCA) blood flow has gained interest in recent years. The aim of this study was to evaluate whether carotid minute distance (cMD), collected from a hands-free continuous wave Doppler, allows tracking directional changes incardiac output (CO) induced by passive leg raising (PLR) or dobutamine test in cardiac surgery patients.

Methods

Cardiac surgery patients with pulmonary artery catheter or transpulmonary thermodilution monitoring were enrolled. Four-quadrant plot was adopted to evaluate the concordance between the percentage change of CCA cMD, which was the product of heart rate and velocity time integral, and invasive CO induced by PLR or dobutamine test.

Results

A total of 41 cardiac surgery patients were enrolled and 82 pairs of invasive CO and cMD induced by the PLR or dobutamine test were collected in this study. Following the PLR test, significant increases were observed in CO (5.3 ± 1.1 vs. 5.7 ± 1.3 L/min, p﹤0.001). Similarly, dobutamine administration resulted in marked elevations of CO (5.3 ± 1.1 vs. 6.0 ± 1.3 L/min, p﹤0.001). Compared with baseline values, cMD demonstrated significant enhancement following both PLR test and dobutamine challenge. The concordance rate between percentage change of CO and cMD was 98.5%, with the coefficient of determination (R2) be 0.58 (p﹤0.001).

Conclusions

In cardiac surgery patients, cMD collected from a hands-free CADFlow monitor system could reliably tracking directional changes of CO, with thermodilution technique be the reference method.

Trial registration: ClinicalTrials.gov (NCT05944146). Registered July 12, 2023.