AI Article Synopsis
- A systematic review was conducted to evaluate whether venoarterial extracorporeal membrane oxygenation (VA-ECMO) improves survival rates in patients with acute pulmonary embolism (PE).
- The analysis included 29 studies with a total of 1,947 patients but found no significant difference in short-term survival between those treated with VA-ECMO and a control group (RR 0.91).
- Factors influencing survival included age over 60 years, which correlated with lower survival rates, while those who underwent surgical embolectomy had better survival outcomes (RR 1.96).
Article Abstract
Background: To examine whether venoarterial extracorporeal membrane oxygenation (VA-ECMO) improves survival of patients with acute pulmonary embolism (PE).
Methods: Following the PRISMA guidelines, a systematic search was conducted up to August 2019 of the databases: PubMed/MEDLINE, EMBASE and Cochrane. All studies reporting the survival of adult patients with acute PE treated with VA-ECMO and including four patients or more were included. Exclusion criteria were: correspondences, reviews and studies in absence of a full text, written in other languages than English or Dutch, or dating before 1980. Short-term (hospital or 30-day) survival data were pooled and presented with relative risks (RR) and 95% confidence intervals (95% CI). Also, the following pre-defined factors were evaluated for their association with survival in VA-ECMO treated patients: age > 60 years, male sex, pre-ECMO cardiac arrest, surgical embolectomy, catheter directed therapy, systemic thrombolysis, and VA-ECMO as single therapy.
Results: A total of 29 observational studies were included (N = 1947 patients: VA-ECMO N = 1138 and control N = 809). There was no difference in short-term survival between VA-ECMO treated patients and control patients (RR 0.91, 95% CI 0.71-1.16). In acute PE patients undergoing VA-ECMO, age > 60 years was associated with lower survival (RR 0.72, 95% CI 0.52-0.99), surgical embolectomy was associated with higher survival (RR 1.96, 95% CI 1.39-2.76) and pre-ECMO cardiac arrest showed a trend toward lower survival (RR 0.88, 95% CI 0.77-1.01). The other evaluated factors were not associated with a difference in survival.
Conclusions: At present, there is insufficient evidence that VA-ECMO treatment improves short-term survival of acute PE patients. Low quality evidence suggest that VA-ECMO patients aged ≤60 years or who received SE have higher survival rates. Considering the limited evidence derived from the present data, this study emphasizes the need for prospective studies.
Protocol Registration: PROSPERO CRD42019120370.
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| http://dx.doi.org/10.1016/j.jcrc.2021.03.006 | DOI Listing |
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