Vascular Complications of Lower Limb Ischemia in Patients with Femoral Venoarterial Extracorporeal Membrane Oxygenation
Keywords:ECMO; femoral artery; limb ischemia
Background: Lower limb ischemia in patients with extracorporeal membrane oxygenation (ECMO) via femoral artery catheterization negatively affects patient mortality and survivors’ quality of life [Gulkarov 2020]. In this study, ECMO was established via femoral artery catheterization. This study aimed to identify the risk factors of lower limb ischemia to provide sufficient evidence for
Methods: All patients with venoarterial (VA) ECMO via femoral artery catheterization in Zhongshan People’s Hospital from January 2008 to November 2019 retrospectively were analyzed. Patients’ general information and ECMO-related information were obtained, and the main outcome variables were survival and discharge and intubation-related adverse events (limb ischemia and incision bleeding). Logistic regression analysis was used to determine the independent risk factors of limb ischemia in patients with VA ECMO.
Results: A total of 179 (98 [54.7%] men and 81 [45.3%] women) eligible patients were included in this study. Moreover, a total of 90 patients (48.9%) had low cardiac output, 41 (22.3%) had acute myocardial infarction, and 33 (17.9%) had fulminant myocarditis. Eighty-six (48.04%) patients survived to hospital discharge, 36 (20.11%) had limb ischemia, and 42 (23.46%) had incision bleeding. Furthermore, the ECMO-assisted time was 114.23 ± 67.88 hours. There was no significant difference in age, sex, and Sequential Organ Failure Assessment score between the limb ischemia group and the non-limb ischemia group. Multivariate logistic regression analysis showed that peripheral artery disease (odds ratio, 27.12; 95% confidence interval, 5.614–130.96) was an independent risk factor of limb ischemia in patients with ECMO.
Conclusion: Limb ischemia is a common complication in patients with VA ECMO, and peripheral artery disease is an independent risk factor of limb ischemia in patients with VA ECMO via femoral artery catheterization.
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