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Updated: Sep 9, 2025

Point-of-Care Ultrasound for Peripheral Veno-Arterial Extracorporeal Membrane Oxygenation Without Left Ventricular Venting
Published on: January 17, 2025
[Prone positioning during venovenous extracorporeal membrane oxygenation: challenges and value]
1Beijing Institute of Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China.
Prone positioning during venovenous extracorporeal membrane oxygenation (VV-ECMO) for acute respiratory distress syndrome (ARDS) shows controversial results. Recent trials question its routine benefit, necessitating further research for precise patient selection.
Area of Science:
- Critical Care Medicine
- Respiratory Physiology
- Extracorporeal Life Support
Context:
- Venovenous extracorporeal membrane oxygenation (VV-ECMO) is a life-support therapy for severe respiratory failure.
- Prone positioning is a technique used to improve oxygenation in critically ill patients.
- The efficacy of routine prone positioning during VV-ECMO for acute respiratory distress syndrome (ARDS) is debated.
Purpose:
- To critically evaluate the evidence for and against routine prone positioning in patients undergoing VV-ECMO.
- To analyze the implications of recent clinical trial findings, such as the PRONECMO trial.
- To identify challenges, benefits, and future research directions for optimizing prone positioning strategies in VV-ECMO.
Summary:
- Observational studies suggested survival benefits of prone positioning in VV-ECMO for ARDS.
- The PRONECMO trial reported negative findings, challenging the routine use of this intervention.
- This review synthesizes current evidence, discusses trial limitations, and highlights the need for subgroup analysis and refined protocols.
Impact:
- Informs clinical decision-making regarding the use of prone positioning in VV-ECMO patients.
- Guides future research to determine optimal patient selection and implementation strategies.
- Aims to improve outcomes for patients with severe ARDS requiring extracorporeal membrane oxygenation.
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