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Impact of thrombocytopenia on short-term outcomes in patients undergoing mobile extracorporeal membrane oxygenation support.
Perfusion 2023 December 27
INTRODUCTION: The prolonged use of extracorporeal membrane oxygenation (ECMO) support is associated with increased consumption of platelets and hemolysis. The prognostic impact of thrombocytopenia prior to and during ECMO support on patient's short-, mid- and long-term outcomes has been critically evaluated and discussed over the last years. However, only few data have been published on thrombocytopenia caused by mobile ECMO support. The aim of this study was to evaluate the impact of thrombocytopenia on short-term outcomes and predictors of in-hospital mortality in patients supported by mobile ECMO for transportation and subsequent weaning in a tertiary centre.
METHODS: This retrospective single-centre study analyzed a total of 117 patients requiring mobile veno-arterial (va) ECMO support and subsequent transportation from referral hospitals to our department from January 2015 until December 2021. A total of 15 patients had to be excluded from the analysis for missing data regarding baseline platelet count. Patients were divided into two groups: thrombocytopenia group (<130 × 109/L, n = 44) and non-thrombocytopenia group (≥130 × 109/L, n = 58). The primary outcome was in-hospital mortality. Secondary outcomes were successful ECMO-weaning, and the incidence of associated complications (bleeding, acute hepatic failure, acute renal failure, dialysis, and septic shock).
RESULTS: The dialysis rate before ECMO initiation was significantly higher ( p = .041) in the thrombocytopenia group compared to the non-thrombocytopenia group. The rates of bleeding complications ( p = .032) and limb ischemia ( p = .003) were significantly higher in patients with low platelet count. Moreover, complication rates of acute hepatic failure ( p < .001), acute renal failure ( p < .001) and dialysis ( p = .033) were significantly higher in the thrombocytopenia group. Also, in-hospital mortality was significantly higher ( p = .002) in patients with low platelet count before initiation of ECMO support.
CONCLUSION: Based on the results of the present study, patients with thrombocytopenia prior to mobile vaECMO support may be at significantly higher risk for associated complications and short-term mortality.
METHODS: This retrospective single-centre study analyzed a total of 117 patients requiring mobile veno-arterial (va) ECMO support and subsequent transportation from referral hospitals to our department from January 2015 until December 2021. A total of 15 patients had to be excluded from the analysis for missing data regarding baseline platelet count. Patients were divided into two groups: thrombocytopenia group (<130 × 109/L, n = 44) and non-thrombocytopenia group (≥130 × 109/L, n = 58). The primary outcome was in-hospital mortality. Secondary outcomes were successful ECMO-weaning, and the incidence of associated complications (bleeding, acute hepatic failure, acute renal failure, dialysis, and septic shock).
RESULTS: The dialysis rate before ECMO initiation was significantly higher ( p = .041) in the thrombocytopenia group compared to the non-thrombocytopenia group. The rates of bleeding complications ( p = .032) and limb ischemia ( p = .003) were significantly higher in patients with low platelet count. Moreover, complication rates of acute hepatic failure ( p < .001), acute renal failure ( p < .001) and dialysis ( p = .033) were significantly higher in the thrombocytopenia group. Also, in-hospital mortality was significantly higher ( p = .002) in patients with low platelet count before initiation of ECMO support.
CONCLUSION: Based on the results of the present study, patients with thrombocytopenia prior to mobile vaECMO support may be at significantly higher risk for associated complications and short-term mortality.
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