Assessment of Cardiac Function and Anesthesia Depth in Patients Undergoing Cardiac Surgery (SHAPE)
2026年8月18日 更新者：Christos Mantzios、AHEPA University Hospital
Multifactorial Assessment of Cardiac Function Through Deformation Imaging, Hemodynamic Parameters, and Anesthesia-related Variables in Patients Undergoing Cardiac Surgery: The SHAPE Study
The SHAPE study is a prospective, randomized study evaluating changes in cardiac function in adult patients undergoing cardiac surgery with cardiopulmonary bypass. The study focuses on how cardiac function changes during surgery and whether the depth of anesthesia may influence these changes.
Participants are randomly assigned to one of two levels of anesthesia depth, guided by the Bispectral Index (BIS). Cardiac function is assessed using transthoracic echocardiography, including myocardial deformation (strain) imaging and myocardial work measurements. Invasive hemodynamic measurements obtained during surgery are also recorded.
The primary objective is to assess the change in left ventricular global longitudinal strain (LV GLS) between two intraoperative time points: after induction of anesthesia and before cardiopulmonary bypass, and after separation from cardiopulmonary bypass. The study will also examine whether these changes differ according to the assigned depth of anesthesia and whether echocardiographic and hemodynamic measurements are associated with postoperative outcomes.
Participants will also undergo follow-up echocardiographic assessment at 3, 6, and 12 months after surgery to evaluate longer-term changes in cardiac function.
研究概览
详细说明
The SHAPE study is a prospective, randomized, parallel-group, single-masked interventional study conducted in adult patients undergoing elective cardiac surgery with cardiopulmonary bypass. The study is designed to investigate perioperative changes in myocardial function and to assess the potential influence of anesthesia depth on these changes.
Participants are randomized in a 1:1 ratio to two Bispectral Index (BIS)-guided anesthesia strategies: a BIS target of 45-55, representing standard anesthesia depth, or a BIS target of 30-35, representing deeper anesthesia. Total intravenous anesthesia with propofol and remifentanil is adjusted by the treating anesthesiologist to maintain the assigned BIS range. The echocardiographic outcome assessor remains blinded to treatment allocation during image acquisition, offline echocardiographic analysis, and primary outcome assessment.
Cardiac function is evaluated using transthoracic echocardiography and speckle-tracking analysis. Measurements include left ventricular global longitudinal strain (LV GLS), myocardial work indices, and additional indices of left- and right-sided cardiac function. Invasive hemodynamic monitoring using a Swan-Ganz catheter provides measurements including pulmonary capillary wedge pressure, cardiac output, cardiac index, pulmonary artery pressure, and right atrial pressure.
The primary analysis evaluates the within-participant change in LV GLS between two predefined intraoperative time points: after induction of anesthesia and before initiation of cardiopulmonary bypass (T1), and after separation from cardiopulmonary bypass (T2). Secondary analyses will assess whether the magnitude of perioperative changes in LV GLS and myocardial work differs between the two randomized BIS groups and will explore associations between echocardiographic measurements, invasive hemodynamic parameters, and postoperative clinical outcomes.
Postoperative outcomes include low cardiac output syndrome, requirement for inotropic or vasopressor support, postoperative atrial fibrillation, duration of mechanical ventilation, and length of intensive care unit stay. Echocardiographic follow-up is performed at 3, 6, and 12 months after surgery to assess longer-term changes in cardiac function.
研究类型
介入性
注册 (估计的)
70
阶段
- 不适用
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
- 姓名：Christos Mantzios, Cardiology Resident, MD, MSc
- 电话号码：+306983282188
- 邮箱：chrismantzios1994@gmail.com
学习地点
-
-
-
Thessaloniki、希腊、54636
- 招聘中
- AHEPA University General Hospital of Thessaloniki
-
接触：
- Christos Mantzios, Cardiology Resident, MD, MSc
- 电话号码：+306983282188
- 邮箱：chrismantzios1994@gmail.com
-
接触：
-
首席研究员：
- Christos Mantzios, Cardiology Resident, MD, MSc
-
副研究员：
- Vasileos Kamperidis, Assistant Professor
-
副研究员：
- Despoina Sarridou, Associate Professor
-
-
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
- 成人
- 年长者
接受健康志愿者
不
描述
Inclusion Criteria:
- Adults aged 18 years or older, irrespective of sex.
- Scheduled to undergo elective cardiac surgery involving cardiopulmonary bypass (on-pump surgery).
- Anticipated adequate acoustic window for transthoracic echocardiography.
- Provision of written informed consent.
Exclusion Criteria:
- - Emergency or unscheduled cardiac surgery.
- Cardiac surgery without cardiopulmonary bypass (off-pump surgery).
- Refusal or inability to provide written informed consent.
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
- 主要用途：基础科学
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：单身的
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
|
有源比较器：BIS 45-55
Participants assigned to this arm will receive total intravenous anesthesia with propofol and remifentanil, adjusted by the treating anesthesiologist to maintain a Bispectral Index (BIS) target range of 45-55, representing standard anesthesia depth.
|
Total intravenous anesthesia with propofol and remifentanil will be adjusted by the treating anesthesiologist to maintain a Bispectral Index (BIS) target range of 45-55, representing standard anesthesia depth.
|
|
实验性的：BIS 30-35
Participants assigned to this arm will receive total intravenous anesthesia with propofol and remifentanil, adjusted by the treating anesthesiologist to maintain a Bispectral Index (BIS) target range of 30-35, representing deeper anesthesia.
|
Total intravenous anesthesia with propofol and remifentanil will be adjusted by the treating anesthesiologist to maintain a Bispectral Index (BIS) target range of 30-35, representing deeper anesthesia.
|
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 |
|---|---|---|
|
Within-Participant Change in Left Ventricular Global Longitudinal Strain (LV GLS) From T1 to T2
大体时间：During index cardiac surgery: T1 after induction of anesthesia and before cardiopulmonary bypass; T2 after separation from cardiopulmonary bypass.
|
Left ventricular global longitudinal strain (LV GLS) will be assessed by speckle-tracking echocardiography at two predefined intraoperative time points: T1, after induction of anesthesia and before initiation of cardiopulmonary bypass, and T2, after separation from cardiopulmonary bypass.
The primary outcome will be the within-participant change in LV GLS, calculated as T2 minus T1 and expressed in percentage points.
Because LV GLS is expressed as a negative value, a positive T2-minus-T1 difference indicates a reduction in the absolute magnitude of LV GLS and therefore deterioration in longitudinal systolic function.
|
During index cardiac surgery: T1 after induction of anesthesia and before cardiopulmonary bypass; T2 after separation from cardiopulmonary bypass.
|
次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Change in Left Ventricular Global Longitudinal Strain (LV GLS) From T1 to T2 by Randomized BIS Group
大体时间：During index cardiac surgery: from T1 before cardiopulmonary bypass to T2 after separation from cardiopulmonary bypass.
|
Left ventricular global longitudinal strain (LV GLS) will be assessed by speckle-tracking echocardiography at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
The within-participant change in LV GLS (T2 minus T1), expressed in percentage points, will be compared between participants randomized to the BIS 45-55 and BIS 30-35 groups.
|
During index cardiac surgery: from T1 before cardiopulmonary bypass to T2 after separation from cardiopulmonary bypass.
|
|
Change in Left Ventricular Myocardial Work Indices From T1 to T2 by Randomized BIS Group
大体时间：During index cardiac surgery: from T1, before cardiopulmonary bypass, to T2, after separation from cardiopulmonary bypass.
|
Left ventricular myocardial work will be assessed using non-invasive pressure-strain loops at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
Myocardial work indices will include Global Work Index (GWI), Global Constructive Work (GCW), Global Wasted Work (GWW), and Global Work Efficiency (GWE).
Changes from T1 to T2 will be assessed within participants and compared between the BIS 45-55 and BIS 30-35 groups.
|
During index cardiac surgery: from T1, before cardiopulmonary bypass, to T2, after separation from cardiopulmonary bypass.
|
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Postoperative Adverse Clinical Events
大体时间：From completion of index cardiac surgery through discharge during the index hospitalization, assessed up to 60 days after surgery.
|
Postoperative adverse clinical events will include the occurrence of low cardiac output syndrome (LCOS), requirement for inotropic or vasopressor support, and postoperative atrial fibrillation (POAF).
Each event will be recorded during the postoperative hospitalization and evaluated in relation to perioperative echocardiographic, hemodynamic, and anesthesia-related parameters.
|
From completion of index cardiac surgery through discharge during the index hospitalization, assessed up to 60 days after surgery.
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Duration of Mechanical Ventilation
大体时间：From completion of index cardiac surgery until successful extubation during the index hospitalization, assessed up to 60 days after surgery.
|
The duration of postoperative mechanical ventilation will be recorded as the time from completion of index cardiac surgery until successful extubation.
Duration will be expressed in minutes and analyzed in relation to perioperative echocardiographic, hemodynamic, and anesthesia-related parameters.
|
From completion of index cardiac surgery until successful extubation during the index hospitalization, assessed up to 60 days after surgery.
|
|
Length of Intensive Care Unit Stay
大体时间：From postoperative ICU admission until ICU discharge during the index hospitalization, assessed up to 60 days after surgery.
|
The length of stay in the intensive care unit (ICU) will be recorded as the duration from postoperative admission to the ICU until discharge from the ICU.
Duration will be expressed in days and analyzed in relation to perioperative echocardiographic, hemodynamic, and anesthesia-related parameters.
|
From postoperative ICU admission until ICU discharge during the index hospitalization, assessed up to 60 days after surgery.
|
|
Change in Left Ventricular Global Longitudinal Strain During Follow-up
大体时间：Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
Left ventricular global longitudinal strain (LV GLS) will be assessed by speckle-tracking transthoracic echocardiography and expressed as a percentage (%).
LV GLS will be measured preoperatively and reassessed at 3, 6, and 12 months after cardiac surgery.
Changes at each follow-up time point will be evaluated relative to the preoperative baseline value.
|
Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
|
Change in Left Ventricular Global Work Index During Follow-up
大体时间：Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
Left ventricular Global Work Index (GWI) will be assessed using non-invasive pressure-strain loop analysis and expressed in mmHg%.
GWI will be measured preoperatively and reassessed at 3, 6, and 12 months after cardiac surgery.
Changes at each follow-up time point will be evaluated relative to the preoperative baseline value.
|
Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
|
Change in Left Ventricular Global Constructive Work During Follow-up
大体时间：Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
Left ventricular Global Constructive Work (GCW) will be assessed using non-invasive pressure-strain loop analysis and expressed in mmHg%.
GCW will be measured preoperatively and reassessed at 3, 6, and 12 months after cardiac surgery.
Changes at each follow-up time point will be evaluated relative to the preoperative baseline value.
|
Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
|
Change in Left Ventricular Global Wasted Work During Follow-up
大体时间：Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
Left ventricular Global Wasted Work (GWW) will be assessed using non-invasive pressure-strain loop analysis and expressed in mmHg%.
GWW will be measured preoperatively and reassessed at 3, 6, and 12 months after cardiac surgery.
Changes at each follow-up time point will be evaluated relative to the preoperative baseline value.
|
Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
|
Change in Left Ventricular Global Work Efficiency During Follow-up
大体时间：Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
Left ventricular Global Work Efficiency (GWE) will be assessed using non-invasive pressure-strain loop analysis and expressed as a percentage (%).
GWE will be measured preoperatively and reassessed at 3, 6, and 12 months after cardiac surgery.
Changes at each follow-up time point will be evaluated relative to the preoperative baseline value.
|
Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
|
Change in Right Ventricular Free-Wall Strain During Follow-up
大体时间：Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
Right ventricular free-wall strain (RV FWS) will be assessed by speckle-tracking transthoracic echocardiography and expressed as a percentage (%).
RV FWS will be measured preoperatively and reassessed at 3, 6, and 12 months after cardiac surgery.
Changes at each follow-up time point will be evaluated relative to the preoperative baseline value.
|
Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
|
Change in Right Atrial Strain During Follow-up
大体时间：Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
Right atrial strain (RA strain) will be assessed by speckle-tracking transthoracic echocardiography and expressed as a percentage (%).
RA strain will be measured preoperatively and reassessed at 3, 6, and 12 months after cardiac surgery.
Changes at each follow-up time point will be evaluated relative to the preoperative baseline value.
|
Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
|
Change in Tricuspid Annular Plane Systolic Excursion During Follow-up
大体时间：Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
Tricuspid annular plane systolic excursion (TAPSE) will be assessed by transthoracic echocardiography and expressed in millimeters (mm).
TAPSE will be measured preoperatively and reassessed at 3, 6, and 12 months after cardiac surgery.
Changes at each follow-up time point will be evaluated relative to the preoperative baseline value.
|
Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
|
Presence of Paradoxical Septal Motion During Follow-up
大体时间：Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
Interventricular septal motion will be assessed by transthoracic echocardiography and classified according to the presence or absence of paradoxical septal motion (PSM).
PSM status will be recorded preoperatively and reassessed at 3, 6, and 12 months after cardiac surgery to evaluate its postoperative evolution.
|
Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
|
Change in TAPSE/sPAP Ratio During Follow-up
大体时间：Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
The ratio of tricuspid annular plane systolic excursion to systolic pulmonary artery pressure (TAPSE/sPAP), an echocardiographic index of right ventricular-pulmonary arterial coupling, will be assessed by transthoracic echocardiography and expressed in mm/mmHg.
The TAPSE/sPAP ratio will be measured preoperatively and reassessed at 3, 6, and 12 months after cardiac surgery.
Changes at each follow-up time point will be evaluated relative to the preoperative baseline value.
|
Preoperative baseline and 3, 6, and 12 months after index cardiac surgery.
|
|
Correlation Between Left Ventricular Global Longitudinal Strain and Pulmonary Capillary Wedge Pressure
大体时间：During index cardiac surgery at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
|
Left ventricular global longitudinal strain (LV GLS) will be assessed by speckle-tracking transthoracic echocardiography and expressed as a percentage (%).
Pulmonary capillary wedge pressure (PCWP) will be measured invasively using a Swan-Ganz catheter and expressed in mmHg.
Both measurements will be obtained at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
The correlation between LV GLS and PCWP will be assessed at each time point using Pearson's or Spearman's correlation coefficient, as appropriate.
|
During index cardiac surgery at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
|
|
Correlation Between Left Ventricular Global Work Index and Pulmonary Capillary Wedge Pressure
大体时间：During index cardiac surgery at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
|
Left ventricular Global Work Index (GWI) will be assessed using non-invasive pressure-strain loop analysis and expressed in mmHg%.
Pulmonary capillary wedge pressure (PCWP) will be measured invasively using a Swan-Ganz catheter and expressed in mmHg.
Both measurements will be obtained at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
The correlation between GWI and PCWP will be assessed at each time point using Pearson's or Spearman's correlation coefficient, as appropriate.
|
During index cardiac surgery at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
|
|
Correlation Between Left Ventricular Global Constructive Work and Pulmonary Capillary Wedge Pressure
大体时间：During index cardiac surgery at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
|
Left ventricular Global Constructive Work (GCW) will be assessed using non-invasive pressure-strain loop analysis and expressed in mmHg%.
Pulmonary capillary wedge pressure (PCWP) will be measured invasively using a Swan-Ganz catheter and expressed in mmHg.
Both measurements will be obtained at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
The correlation between GCW and PCWP will be assessed at each time point using Pearson's or Spearman's correlation coefficient, as appropriate.
|
During index cardiac surgery at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
|
|
Correlation Between Left Ventricular Global Wasted Work and Pulmonary Capillary Wedge Pressure
大体时间：During index cardiac surgery at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
|
Left ventricular Global Wasted Work (GWW) will be assessed using non-invasive pressure-strain loop analysis and expressed in mmHg%.
Pulmonary capillary wedge pressure (PCWP) will be measured invasively using a Swan-Ganz catheter and expressed in mmHg.
Both measurements will be obtained at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
The correlation between GWW and PCWP will be assessed at each time point using Pearson's or Spearman's correlation coefficient, as appropriate.
|
During index cardiac surgery at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
|
|
Correlation Between Left Ventricular Global Work Efficiency and Pulmonary Capillary Wedge Pressure
大体时间：During index cardiac surgery at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
|
Left ventricular Global Work Efficiency (GWE) will be assessed using non-invasive pressure-strain loop analysis and expressed as a percentage (%).
Pulmonary capillary wedge pressure (PCWP) will be measured invasively using a Swan-Ganz catheter and expressed in mmHg.
Both measurements will be obtained at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
The correlation between GWE and PCWP will be assessed at each time point using Pearson's or Spearman's correlation coefficient, as appropriate.
|
During index cardiac surgery at T1, after induction of anesthesia and before cardiopulmonary bypass, and at T2, after separation from cardiopulmonary bypass.
|
|
Correlation Between Preoperative Right Atrial Strain and Intraoperative Pulmonary Capillary Wedge Pressure
大体时间：Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative PCWP assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
Preoperative right atrial strain (RA strain) will be assessed by speckle-tracking transthoracic echocardiography and expressed as a percentage (%).
Pulmonary capillary wedge pressure (PCWP) will be measured invasively using a Swan-Ganz catheter at T1 and expressed in mmHg.
The correlation between preoperative RA strain and PCWP will be assessed using Pearson's or Spearman's correlation coefficient, as appropriate.
|
Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative PCWP assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
|
Correlation Between Preoperative Right Atrial Strain and Intraoperative Cardiac Index
大体时间：Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative cardiac index assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
Preoperative right atrial strain (RA strain) will be assessed by speckle-tracking transthoracic echocardiography and expressed as a percentage (%).
Cardiac index (CI) will be measured invasively using a Swan-Ganz catheter at T1 and expressed in L/min/m².
The correlation between preoperative RA strain and CI will be assessed using Pearson's or Spearman's correlation coefficient, as appropriate.
|
Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative cardiac index assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
|
Correlation Between Preoperative Right Ventricular Free-Wall Strain and Intraoperative Pulmonary Capillary Wedge Pressure
大体时间：Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative PCWP assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
Preoperative right ventricular free-wall strain (RV FWS) will be assessed by speckle-tracking transthoracic echocardiography and expressed as a percentage (%).
Pulmonary capillary wedge pressure (PCWP) will be measured invasively using a Swan-Ganz catheter at T1 and expressed in mmHg.
The correlation between preoperative RV FWS and PCWP will be assessed using Pearson's or Spearman's correlation coefficient, as appropriate.
|
Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative PCWP assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
|
Correlation Between Preoperative Right Ventricular Free-Wall Strain and Intraoperative Cardiac Index
大体时间：Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative cardiac index assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
Preoperative right ventricular free-wall strain (RV FWS) will be assessed by speckle-tracking transthoracic echocardiography and expressed as a percentage (%).
Cardiac index (CI) will be measured invasively using a Swan-Ganz catheter at T1 and expressed in L/min/m².
The correlation between preoperative RV FWS and CI will be assessed using Pearson's or Spearman's correlation coefficient, as appropriate.
|
Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative cardiac index assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
|
Correlation Between Preoperative TAPSE/sPAP Ratio and Intraoperative Pulmonary Capillary Wedge Pressure
大体时间：Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative PCWP assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
The preoperative TAPSE/sPAP ratio will be assessed by transthoracic echocardiography and expressed in mm/mmHg.
Pulmonary capillary wedge pressure (PCWP) will be measured invasively using a Swan-Ganz catheter at T1 and expressed in mmHg.
The correlation between the preoperative TAPSE/sPAP ratio and PCWP will be assessed using Pearson's or Spearman's correlation coefficient, as appropriate.
|
Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative PCWP assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
|
Correlation Between Preoperative TAPSE/sPAP Ratio and Intraoperative Cardiac Index
大体时间：Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative cardiac index assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
The preoperative TAPSE/sPAP ratio will be assessed by transthoracic echocardiography and expressed in mm/mmHg.
Cardiac index (CI) will be measured invasively using a Swan-Ganz catheter at T1 and expressed in L/min/m².
The correlation between the preoperative TAPSE/sPAP ratio and CI will be assessed using Pearson's or Spearman's correlation coefficient, as appropriate.
|
Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative cardiac index assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
|
Correlation Between Preoperative E/LA Strain Ratio and Intraoperative Pulmonary Capillary Wedge Pressure
大体时间：Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative PCWP assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
The preoperative E/LA strain ratio will be calculated as the ratio of early diastolic transmitral flow velocity (E), measured by pulsed-wave Doppler echocardiography and expressed in cm/s, to left atrial strain, measured by speckle-tracking transthoracic echocardiography and expressed as a percentage (%).
The E/LA strain ratio will be expressed in cm/s/%.
Pulmonary capillary wedge pressure (PCWP) will be measured invasively using a Swan-Ganz catheter at T1 and expressed in mmHg.
The correlation between the preoperative E/LA strain ratio and intraoperative PCWP will be assessed using Pearson's or Spearman's correlation coefficient, as appropriate.
|
Preoperative transthoracic echocardiography within 24 hours before surgery and intraoperative PCWP assessment at T1, after induction of anesthesia and before cardiopulmonary bypass.
|
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。
调查人员
- 学习椅：Vasileios Kamperidis, Assistant Professor、1st Department of Cardiology, School of Medicine, Aristotle University of Thessaloniki, AHEPA University Hospital, Thessaloniki, Greece
- 研究主任：Despoina Sarridou, Associate Professor、Department of Anesthesiology, AHEPA University Hospital, Aristotle University of Thessaloniki
- 研究主任：Helena Argiriadou, Professor、Department of Anesthesiology and Intensive Care, AHEPA University Hospital, Aristotle University of Thessaloniki
- 研究主任：Antonios Ziakas, Professor、1st Department of Cardiology, School of Medicine, Aristotle University of Thessaloniki, AHEPA University Hospital, Thessaloniki, Greece
- 首席研究员：Christos Mantzios, Cardiology Resident, MD, MSc、1st Department of Cardiology, School of Medicine, Aristotle University of Thessaloniki, AHEPA University Hospital, Thessaloniki, Greece
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)
2026年1月19日
初级完成 (估计的)
2026年11月1日
研究完成 (估计的)
2027年11月1日
研究注册日期
首次提交
2026年8月10日
首先提交符合 QC 标准的
2026年8月13日
首次发布 (实际的)
2026年8月18日
研究记录更新
最后更新发布 (实际的)
2026年8月19日
上次提交的符合 QC 标准的更新
2026年8月18日
最后验证
2026年8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
- SHAPE
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-level data will not be shared with other researchers.
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.