Optimal ECMO Flow in the Critical Phase of Cardiogenic Shock to Optimize Peripheral Organ Perfusion and Myocardial Stress

NCT ID: NCT06936839

Last Updated: 2025-04-20

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Total Enrollment

55 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-04-15

Study Completion Date

2026-04-01

Brief Summary

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Veno-arterial ECMO (VA ECMO) is considered the ultimate lifesaving technique in refractory cardiogenic shock (CS). However, VA ECMO is associated with potentially serious adverse effects and complications. Many authors have demonstrated that VA ECMO increases left ventricular (LV) afterload, leading to increased LV stress, left ventricular end-diastolic pressure (LVEDP), and left atrial pressure (LAP). This pressure increase frequently results in pulmonary oedema and higher myocardial oxygen consumption. These complications are critical to patient survival and myocardial recovery and can lead to prolonged hospital stays and increased healthcare costs.

In the absence of clinical studies and strong recommendations, the optimized management of VA ECMO in clinical practice involves finding an ECMO flow that balances adequate organ perfusion with preserved ventricular ejection, while minimizing LV stress. Since the optimal flow changes with myocardial recovery, ramp tests are regularly performed to adjust ECMO flow.

To date, the optimized management of VA ECMO has been guided empirically. The aim of this study is to describe the consequences of variations in VA ECMO flow during the critical phase of cardiogenic shock on peripheral organ perfusion and LV stress. By analyzing the relationships between VA ECMO flow rate, peripheral perfusion, and myocardial stress, investigators aim to optimize flow settings-particularly by minimizing the potential complications of VA ECMO.

During the daily ramp tests, investigators plan to collect hemodynamic data (cardiac output, SvO₂, pulse pressure, EtCO₂, vasopressor and inotrope dosing), echocardiographic measurements, and organ perfusion indicators (NIRSS, CO₂ gap, respiratory quotient, lactate levels). Data will be collected on Day 1 (ECMO initiation), Day 2 (24 hours after ECMO initiation), and Day 3 (48 hours after ECMO initiation).

Detailed Description

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Conditions

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Cardiogenic Shock

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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study cohort

Adult patients at the early phase of a cardiogenic shock treated with veno-arterial ECMO (\<48h)

Obversation

Intervention Type OTHER

Observing the optimal flow rate to reduce left ventricular stress and enhance peripheral organ perfusion during ramp tests (conducted at QECMO levels of 100%, 75%, 50%, and 25%, provided that SVO₂ remains \>55% and NIRS rSO₂ remains \>50%)

Interventions

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Obversation

Observing the optimal flow rate to reduce left ventricular stress and enhance peripheral organ perfusion during ramp tests (conducted at QECMO levels of 100%, 75%, 50%, and 25%, provided that SVO₂ remains \>55% and NIRS rSO₂ remains \>50%)

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* cardiogenic shock
* treated with VA ECMO for less than 48hours

Exclusion Criteria

* ECMO initiated for refractory cardiac arrest
* Cardiac arres prior to the cardiogenic shock with Low-Flow \> 30 min
* Noradrenaline dose \> 1μg/kg/min, vasopressin dose \> 2IU/h, dobutamine dose \> 15μg/kg/min, adrenaline dose \> 1μg/kg/min, or unstabilized vasopressors or inotropes
* Post-cardiotomy cardiogenic shock
* Septic shock
* Left ventricular unloading by Impella (CP/5) or atrioseptostomy
* Atrial septal defect
* Ventricular septal defect
* Pregnant or breast-feeding women
* Patients protected by law (under guardianship or curatorship),
* Patient participating in another research study with an exclusion period still in progress
* Opposition to participation after having been informed
* Patient not affiliated to any health care system
* Patient unable to express non-opposition without available trusted person
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University Hospital, Montpellier

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Aurore Ughetto, MD

Role: PRINCIPAL_INVESTIGATOR

Montpellier University Hospital

Locations

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Montpellier University Hospital

Montpellier, Occitanie, France

Site Status

Countries

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France

Central Contacts

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Aurore Ughetto, MD

Role: CONTACT

+33467335958

Philippe Gaudard, MD, PhD

Role: CONTACT

+33467335958

Facility Contacts

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Aurore Ughetto, MD

Role: primary

+33467335958

References

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Other Identifiers

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RECHMPL24_0215

Identifier Type: -

Identifier Source: org_study_id

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