Safety of Invasive Procedures During Adult Extracorporeal Membrane Oxygenation: A Systematic Review

Background/Objectives: Adult patients supported with extracorporeal membrane oxygenation (ECMO) frequently require invasive diagnostic, therapeutic, surgical, or bedside procedures during ongoing extracorporeal support. These procedures are clinically challenging because ECMO-related anticoagulation, platelet dysfunction, acquired coagulopathy, and circuit-related coagulation activation may increase both bleeding and thrombotic risks. This systematic review evaluated the safety of invasive procedures performed during adult ECMO support, excluding tracheostomy/tracheotomy because this procedure has recently been addressed in a dedicated systematic review. Methods: A systematic search of PubMed/MEDLINE and Scopus was performed. The final bibliographic data collection was completed in April 2026. Studies were eligible if they included adult ECMO or extracorporeal life support patients undergoing invasive procedures during ongoing ECMO support, or with ECMO used as procedural support, and reported at least one procedure-specific safety outcome. Primary outcomes were procedure-related complications, bleeding, major bleeding, and transfusion requirements. Secondary outcomes included thrombotic and circuit-related complications, oxygenator exchange, reintervention, reoperation, procedural failure, ECMO duration, intensive care unit and hospital length of stay, and mortality. Results: The final qualitative synthesis included 46 studies, comprising 26 studies from PubMed/MEDLINE and 20 additional unique studies from Scopus. Included procedures were grouped into six domains: airway, bronchoscopic, and tracheobronchial procedures; thoracic surgery and lung resections; abdominal surgery, gastrointestinal endoscopy, and decompressive laparotomy; lung transplantation and perioperative extracorporeal life support; cardiovascular, vascular, pulmonary embolism-related, and mechanical circulatory support-related procedures; and mixed non-cardiac surgery. Airway and bronchoscopic procedures generally showed high procedural success in selected cohorts, although registry-level tracheal procedure data reported hemorrhagic complications in 26.0% and surgical-site bleeding in 13.0%. Emergency thoracic and abdominal procedures carried the highest bleeding, transfusion, reintervention, and mortality burden. Lung transplantation studies showed that ECMO can be integrated into perioperative pathways, but hemothorax, transfusion, thromboembolism, and anticoagulation strategy remained central safety issues. Conclusions: Invasive procedures during adult ECMO are feasible in selected patients and experienced centers, but procedural safety varies markedly by procedure type, urgency, baseline disease severity, and anticoagulation strategy. A procedure-centered, multidisciplinary approach with individualized anticoagulation management and careful planning is essential.