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Ultrasound-Calibrated Pulse Contour Cardiac Output Monitoring: Value and Accuracy in Hemodynamic Care

2026年11月3日 更新者：Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

Accuracy and Decision-Making Value of Ultrasound-Calibrated Pulse Contour Cardiac Output Monitoring for Hemodynamic Management in Critically Ill Patients Compared With PiCCO

This is a single-center prospective clinical study in the intensive care unit (ICU). Thirty adult patients with sepsis requiring hemodynamic monitoring and fluid resuscitation will be enrolled. All participants will undergo two hemodynamic monitoring modalities simultaneously: pulse indicator continuous cardiac output (PiCCO) (reference standard) and arterial pulse contour cardiac output (APCO, ultrasound-calibrated pulse-contour cardiac output). The study aims to evaluate the consistency of clinical decision-making for fluid resuscitation guided by APCO compared with PiCCO, and to verify the accuracy of cardiac output (CO) measured by APCO. No investigational drugs will be administered. A standardized fluid challenge will be performed based on clinical indications. Hemodynamic parameters, laboratory results, and adverse events will be collected throughout the ICU stay.

研究概览

地位

尚未招聘

条件

详细说明

Accurate hemodynamic assessment and fluid management are critical for septic patients in ICU. PiCCO using transpulmonary thermodilution is widely regarded as reference standard for cardiac output measurement, but it has limitations including high cost and potential catheter-related complications. APCO combines transthoracic echocardiography calibration with radial-artery pulse contour analysis, which may provide continuous cardiac output monitoring with lower complication risks.

In this prospective self-controlled study, 30 eligible adult sepsis patients fulfilling Sepsis-3 criteria will be recruited at Union Hospital, Tongji Medical College, Huazhong University of Science and Technology. Each subject will undergo concurrent PiCCO and APCO measurements. Study visits include baseline screening (V1), dynamic monitoring when fluid infusion indication appears (V2), post-resuscitation assessment (V3), and follow-up until PiCCO catheter removal (V4). 500-mL crystalloid fluid challenge over 15 minutes will be conducted for patients with positive fluid responsiveness assessed by passive leg-raising test. Cardiac output (CO), stroke volume index (SVI) and other hemodynamic variables will be recorded synchronously after each fluid challenge. The primary endpoint is consistency of fluid-resuscitation clinical decisions between APCO and PiCCO, assessed by overall agreement rate and Kappa statistics. Secondary endpoints include bias, percentage error, Bland-Altman limits of agreement and correlation of CO values between two techniques. Safety outcomes include incidence of adverse events and device-related complications. Statistical analyses will be performed using SPSS and R software.

研究类型

观察性的

注册 (估计的)

30

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习联系方式

研究联系人备份

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

18年 及以上 (成人、年长者)

接受健康志愿者

不

有资格学习的性别

全部

取样方法

非概率样本

研究人群

Adult critically ill patients with sepsis admitted to the intensive care unit, who require hemodynamic monitoring with PiCCO and APCO for fluid resuscitation and volume assessment.

描述

Inclusion Criteria:

  1. Age ≥18 years, admitted to the intensive care unit;
  2. Diagnosed with sepsis according to Sepsis-3 criteria: suspected or confirmed infection with an acute increase in SOFA score ≥2 points from baseline;
  3. Requiring hemodynamic monitoring for volume assessment and fluid resuscitation due to sepsis;
  4. Successfully inserted with central venous catheter and radial arterial catheter, meeting the technical requirements for PiCCO and APCO measurements;
  5. Informed consent signed by the patient or legal surrogate.

Exclusion Criteria:

  1. Severe arrhythmia (e.g., atrial fibrillation, ventricular tachycardia) precluding pulse contour analysis;
  2. Abnormal arterial access site (e.g., severe radial artery disease, arterial malformation) compromising the quality of invasive blood pressure measurement;
  3. Contraindications to ultrasound examination (e.g., severe thoracic deformity, massive pleural effusion, large intrathoracic space-occupying lesion) that prevents acquisition of clear ultrasound images;
  4. Contraindications for PiCCO monitoring (e.g., hemorrhagic disorders, aortic aneurysm, large-vessel vasculitis, pulmonary embolism, during extracorporeal circulation);
  5. Expected ICU stay ≤ 48 hours;
  6. Any other conditions judged unsuitable for enrollment by the investigator.

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

  • 观测模型：COHORT
  • 时间观点：PROSPECTIVE

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Agreement in fluid resuscitation decision-making between PiCCO and APCO
大体时间：Baseline (enrollment); dynamic monitoring (fluid responsiveness assessment); fluid resuscitation phase (end of early resuscitation); and ≥3 times daily in follow-up until PiCCO catheter removal (expected average 7 days), whichever come first.

This outcome assesses the overall agreement rate and Kappa value for consistency of clinical fluid resuscitation decision-making guided by PiCCO and APCO measurements.
Baseline (enrollment); dynamic monitoring (fluid responsiveness assessment); fluid resuscitation phase (end of early resuscitation); and ≥3 times daily in follow-up until PiCCO catheter removal (expected average 7 days), whichever come first.

次要结果测量

结果测量
措施说明
大体时间
Percentage error of cardiac output (CO) between PiCCO and APCO
大体时间：Baseline (enrollment); dynamic monitoring (fluid responsiveness assessment); fluid resuscitation phase (end of early resuscitation); and ≥3 times daily in follow-up until PiCCO catheter removal (expected average 7 days), whichever come first.

This outcome assesses the percentage error of paired cardiac output measurements obtained by PiCCO transpulmonary thermodilution and APCO monitoring.
Baseline (enrollment); dynamic monitoring (fluid responsiveness assessment); fluid resuscitation phase (end of early resuscitation); and ≥3 times daily in follow-up until PiCCO catheter removal (expected average 7 days), whichever come first.
Consistency of cardiac output trend changes after hemodynamic intervention
大体时间：Baseline (enrollment); dynamic monitoring (fluid responsiveness assessment); fluid resuscitation phase (end of early resuscitation); and ≥3 times daily in follow-up until PiCCO catheter removal (expected average 7 days), whichever come first.

This outcome assesses the consistency of cardiac output trend changes detected by PiCCO transpulmonary thermodilution and APCO monitoring after hemodynamic intervention.
Baseline (enrollment); dynamic monitoring (fluid responsiveness assessment); fluid resuscitation phase (end of early resuscitation); and ≥3 times daily in follow-up until PiCCO catheter removal (expected average 7 days), whichever come first.
Agreement of cardiac output evaluated by Bland-Altman analysis
大体时间：Baseline (enrollment); dynamic monitoring (fluid responsiveness assessment); fluid resuscitation phase (end of early resuscitation); and ≥3 times daily in follow-up until PiCCO catheter removal (expected average 7 days), whichever come first.

Bland-Altman analysis is used to evaluate the agreement of cardiac output measured by PiCCO and APCO.
Baseline (enrollment); dynamic monitoring (fluid responsiveness assessment); fluid resuscitation phase (end of early resuscitation); and ≥3 times daily in follow-up until PiCCO catheter removal (expected average 7 days), whichever come first.
Pearson correlation of CO between PiCCO and APCO
大体时间：Baseline (enrollment); dynamic monitoring (fluid responsiveness assessment); fluid resuscitation phase (end of early resuscitation); and ≥3 times daily in follow-up until PiCCO catheter removal (expected average 7 days), whichever come first.

This outcome assesses the Pearson correlation coefficient of paired cardiac output measurements obtained by PiCCO transpulmonary thermodilution and APCO monitoring.
Baseline (enrollment); dynamic monitoring (fluid responsiveness assessment); fluid resuscitation phase (end of early resuscitation); and ≥3 times daily in follow-up until PiCCO catheter removal (expected average 7 days), whichever come first.

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

调查人员

  • 首席研究员：Yuan Yu, MD, PhD、Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (估计的)

2026年11月1日

初级完成 (估计的)

2027年6月1日

研究完成 (估计的)

2027年12月1日

研究注册日期

首次提交

2026年10月13日

首先提交符合 QC 标准的

2026年11月3日

首次发布 (实际的)

2026年11月5日

研究记录更新

最后更新发布 (实际的)

2026年11月5日

上次提交的符合 QC 标准的更新

2026年11月3日

最后验证

2026年10月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • ICU2026016
  • UHCT-IEC-SOP-016-03-01 (其他标识符：Medical Ethics Committee, Un)

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

不

IPD 计划说明

Individual participant data will not be shared publicly due to patient privacy protection and local institutional data regulations. De-identified aggregate study results may be available upon reasonable request to the principal investigator.

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