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静脉淤血与心脏手术相关急性肾损伤

2026年11月4日 更新者：Zhuan Zhang

术中静脉淤血与心脏手术相关急性肾损伤（CSA-AKI）：一项前瞻性队列研究

Venous pressure is often overlooked as an important hemodynamic parameter. Elevated venous pressure and blood stasis in organ tissues can lead to interstitial edema. Intraoperative venous blood stasis can rapidly increase interstitial pressures within organ tissues, especially in organs encapsulated by tissue envelopes, such as the kidney, thereby rapidly reducing effective circulating blood flow to the organ. Systemic venous blood stasis, which tends to occur in patients with right heart failure or pulmonary hypertension, as well as in patients with fluid overload, can lead to intraoperative stasis in multiple organs and tissues, mediating the development of multisystem complications, including acute kidney injury. Therefore, timely, effective, and accurate intraoperative assessment of systemic venous blood stasis is particularly important.

When right heart failure and/or volume overload occurs in the body, changes in right atrial pressure are transmitted to the venous system of organs throughout the body, with dilatation of the inferior vena cava (IVC), obstruction of blood return from the hepatic, portal, and renal veins, and abnormal venous flow signals and altered ultrasound Doppler flow patterns.

The primary objective of this prospective cohort study is to explore if intraoperative systemic venous congestion during cardiac surgery is associated with postoperative CSA-AKI. In doing so, we seek to identify a promising physiological marker that can provide cues for the prediction of CSA-AKI. This study will also investigate the relationship between intraoperative systemic venous congestion and postoperative complications, and explore the relationship between each separate venous congestion and AKI after cardiac surgery.

研究概览

地位

完全的

条件

干预/治疗

研究类型

观察性的

注册 (实际的)

135

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。

学习地点

  • 中国
    • Jiangsu
      • Yangzhou、Jiangsu、中国、225012
        • No. 368 Hanjiang Middle Road

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

概率样本

研究人群

Patients scheduled to undergo elective cardiac surgery

描述

Inclusion Criteria:

  1. Patients scheduled to undergo elective cardiac surgery;
  2. ≥ 18 years.

Exclusion Criteria:

  1. Contraindications for TEE;
  2. Emergency cardiac surgery;
  3. Major vascular surgery;
  4. Redo cardiac surgery;
  5. Abnormal preoperative renal function;
  6. Severe chronic kidney disease (estimated glomerular filtration rate < 15 ml/min/1.73 m2 or dialysis);
  7. History of kidney transplantation;
  8. Severe infection requiring continuous antibiotic therapy；
  9. Severe preoperative heart failure with left ventricular ejection fraction < 30%;
  10. A critical preoperative state (mechanical circulatory support, extracorporeal membrane oxygenation, current renal replacement therapy [RRT], mechanical ventilation, or cardiac arrest necessitating resuscitation);
  11. Multi-organ dysfunction;
  12. Known conditions that may interfere with the assessment or interpretation of hepatic vein, portal vein blood flow (such as liver cirrhosis or portal vein thrombosis) or the renal vein blood flow and renal artery blood flow (such as urinary tract obstruction);
  13. Planned cardiac transplantation or ventricular assist device implantation;
  14. Pregnancy;
  15. Insufficient ultrasonographic imaging;
  16. Restarting CPB after first CPB cessation during surgery;
  17. Requirement for cardiac assist devices (ECMO, IABP, or ventricular assist device) after CPB intraoperatively.

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

队列和干预

团体/队列
干预/治疗
Participant

Adult patients scheduled to undergo elective cardiac surgery
其他：collection of demographic characteristics and comorbidities
  1. gender, age, BMI, ASA classification, NYHA (New York Heart Association) classification.
  2. smoking history, medical history (hypertension, diabetes mellitus, Hyperlipidemia, stroke, anaemia, chronic obstructive pulmonary disease, pulmonary hypertension, preoperative atrial fibrillation, peripheral artery disease), preoperative ACEI, ARB, beta-blockers, loop diuretics, contrast agent, aspirin, and spironolactone use.
其他：surgery-related parameters and kidney function assessments
  1. surgery type, surgery duration, CPB duration, aortic cross-clamp duration, blood loss, intraoperative fluid infusion, intraoperative urine output, intraoperative blood transfusion, intraoperative anesthetics and vasoactive medications.
  2. baseline and postoperative eGFR, duration of mechanical ventilation, duration of vasopressor support, postoperative CRRT initiation, major bleeding, deep sternal wound infection/mediastinitis, surgical re-intervention, ICU LOS, hospital LOS, postoperative stroke, postoperative delirium, complications up to 30 days after surgery, 30-day inpatient mortality, survival status at discharge, and one year follow-up.
  3. a composite endpoint of major complications after surgery defined as at least one of the following: death, prolonged ventilation (>24 h), stroke, severe AKI, deep sternal wound infection, and reoperation for any reason.
  4. CSA-AKI diagnosed using the KDIGO criteria.
  5. acute kidney disease assessment.
  6. major adverse kidney events.
其他：collection of biological (laboratory) parameters
  1. WBC, CRP, IL-6, IL-1β, TNF-α, serum Amyloid A, procalcitonin, catecholamines, cortisol, SOD.
  2. creatinine, uric acid, BUN, CysC, β2-MG, eGFR.
  3. CK-MB, high-sensitivity troponin, NT pro-BNP, BNP.
  4. hemoglobin, hematocrit, sodium, arterial lactate, liver enzymes.
其他：collection of hemodynamic parameters
  1. blood pressure, heart rate, CVP;
  2. CO, CI, SV, SVI,SVV;
  3. intra-abdominal pressure;
  4. vasoactive drug doses in the first hour in the ICU.
其他：collection of echocardiographic parameters and venous ultrasound assessments
  1. Left ventricle systolic function, including LVOT, LVEF, MPI; left ventricular diastolic function, including mitral flow-derived Doppler indices, pulmonary vein Doppler indices.
  2. Right ventricular systolic function, including TAPSE. Right ventricular diastolic function, inferred from an hepatic vein flow in the absence of a dysrhythmia or pacing.
  3. Inferior vena cava (IVC) measurements.
  4. Hepatic vein Doppler parameters.
  5. Portal vein Doppler parameters.
  6. Renal vein Doppler parameters.
  7. Renal artery blood flow Doppler parameters.

研究衡量的是什么？

主要结果指标

结果测量
大体时间
急性肾损伤定义为48小时连续期间内血清肌酐较基线增加≥150%或升高0.3 mg/dL及以上。（KDIGO标准）
大体时间：术后7天
术后7天

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

Zhuan Zhang

调查人员

  • 首席研究员：Zhuan Zhang, MD、The Department of Anesthesiology, The Affiliated Hospital of Yangzhou University, Yangzhou University

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 (实际的)

2024年10月15日

初级完成 (实际的)

2026年7月27日

研究完成 (实际的)

2026年7月27日

研究注册日期

首次提交

2024年12月2日

首先提交符合 QC 标准的

2025年11月13日

首次发布 (实际的)

2025年11月18日

研究记录更新

最后更新发布 (实际的)

2026年11月9日

上次提交的符合 QC 标准的更新

2026年11月4日

最后验证

2025年11月1日

更多信息

与本研究相关的术语

其他相关的 MeSH 术语

其他研究编号

  • 20240916

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

不

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

不

此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.

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