- Cardiology
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Risk factors for cannula-associated arterial thrombosis following extracorporeal membrane oxygenation support: a retrospective study
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Ngan Hoang Kim Trieu, Xuan Thi Phan, Linh Thanh Tran, Huy Minh Pham, Dai Quang Huynh, Tuan Manh Nguyen, Anh Tuan Mai, Quan Quoc Minh Du, Bach Xuan Nguyen, Thao Thi Ngoc Pham
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Acute Crit Care. 2023;38(3):315-324. Published online August 23, 2023
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DOI: https://doi.org/10.4266/acc.2023.00500
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 Abstract
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- Background
Hemostatic dysfunction during extracorporeal membrane oxygenation (ECMO) due to blood-circuit interaction and the consequences of shear stress imposed by flow rates lead to rapid coagulation cascade and thrombus formation in the ECMO system and blood vessels. We aimed to identify the incidence and risk factors for cannula-associated arterial thrombosis (CaAT) post-decannulation.
Methods
A retrospective study of patients undergoing arterial cannula removal following ECMO was performed. We evaluated the incidence of CaAT and compared the characteristics, ECMO machine parameters, cannula sizes, number of blood products transfused during ECMO, and daily hemostasis parameters in patients with and without CaAT. Multivariate analysis identified the risk factors for CaAT.
Results
Forty-seven patients requiring venoarterial ECMO (VA-ECMO) or hybrid methods were recruited for thrombosis screening. The median Sequential Organ Failure Assessment score was 11 (interquartile range, 8–13). CaAT occurred in 29 patients (61.7%), with thrombosis in the superficial femoral artery accounting for 51.7% of cases. The rate of limb ischemia complications in the CaAT group was 17.2%. Multivariate analysis determined that the ECMO flow rate–body surface area (BSA) ratio (100 ml/min/m2) was an independent factor for CaAT, with an odds ratio of 0.79 (95% confidence interval, 0.66–0.95; P=0.014).
Conclusions
We found that the incidence of CaAT was 61.7% following successful decannulation from VA-ECMO or hybrid modes, and the ECMO flow rate–BSA ratio was an independent risk factor for CaAT. We suggest screening for arterial thrombosis following VA-ECMO, and further research is needed to determine the risks and benefits of such screening.
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Citations
Citations to this article as recorded by  - Has the role of veno-arterial extracorporeal membrane oxygenation in patients with cardiogenic shock following acute myocardial infarction been fully determined? A case report
Kha Minh Nguyen, Hai Phuong Nguyen Tran, Vi Tuong Dang, Sy Van Hoang, Josip Andelo Borovac, Dmitry Duplyakov, Chiara De Biase, Pok-Tin Tang
European Heart Journal - Case Reports.2024;[Epub] CrossRef
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