Veno-Arterial Extracorporeal Membrane Oxygenation for Pulmonary Embolism after Systemic Thrombolysis.
Seminars in thoracic and cardiovascular surgery(2021)
Abstract
Massive pulmonary embolism (PE) is a life-threatening condition with a high mortality. Both systemic thrombolytics and veno-arterial extracorporeal membrane oxygenation (VA-ECMO) have been used in the management of massive PE. However, the safety of VA- ECMO in the setting of recent thrombolytic administration is not clear. The purpose of this study is to analyze the outcomes of patients who received VA-ECMO in the setting of systemic thrombolytics (ST). A single institution retrospective study of PE patients treated with VA-ECMO between December 2015 and December 2020 was performed. Patients who received ST were compared with those who did not receive ST. Outcomes, including mortality, major bleeding, duration of mechanical ventilation, need for renal replacement therapy, and length of hospital stay, were compared. A total of 83 patients with PE required VA-ECMO support and 18 of these received systemic thrombolytics. There was no statistically significant difference in survival to discharge between the patients who received ST compared with those who did not (88.9% vs 84.6%; p = 0.94). Major bleeding events occurred more often in patients who received ST (61.1% vs 26.2%; p = 0.01). There was no significant difference in time on mechanical ventilation, need for renal replacement therapy, or length of stay between the groups. Reasonable survival can be achieved despite an increased frequency of major bleeding events in patients that receive ST prior to VA-ECMO for PE. ST administration should not be considered an absolute contraindication to VA-ECMO. Further multi-center studies are needed to corroborate these findings.
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