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Background: Recently extracorporeal membrane oxygenation is becoming the commonly used mechanical assist device for the treatment of severe cardiogenic shock in postcardiotomy patients. Evaluation of risk factors of negative outcome would be beneficial in decision-making in the elderly patient population. Methods: This was a retrospective single-centre analysis of elderly patients who underwent extracorporeal membrane oxygenation treatment for refractory cardiogenic shock in a tertiary care centre. Demographic data, comorbidities and perioperative parameters were collected to evaluate their impact on the outcome of extracorporeal membrane oxygenation treatment in this patient group. Logistic regression analysis of the variables was performed to identify factors predicting an adverse outcome. Results: Forty consecutive elderly patients underwent extracorporeal membrane oxygenation treatment during the study period. The mean age was 76.7 ± 3.8 years, 27 (68%) were male. The mean Survival after Veno–Arterial extracorporeal membrane oxygenation score before initiating extracorporeal membrane oxygenation support was − 11 ± 6. Intra-aortic counterpulsation was used as the first-line mechanical support in 31 (77%) patients. The mean duration of extracorporeal membrane oxygenation support was 172 ± 128 hours. Twenty-four patients (56%) were successfully weaned from extracorporeal membrane oxygenation, and 8 (20%) survived to hospital discharge. Lactate level before extracorporeal membrane oxygenation initiation was the only predictor of unfavourable outcome in multivariate analysis (p Conclusion: High lactate level before initiation of extracorporeal membrane oxygenation was the most important prognostic values of an unfavourable outcome.