The European Registry for Patients with Mechanical Circulatory Support of the European Association for Cardio-Thoracic Surgery: third report.

de By, Theo M M H; Schoenrath, Felix; Veen, Kevin M; Mohacsi, Paul; Stein, Julia; Alkhamees, Khalid M M; Anastasiadis, Kyriakos; Berhnardt, Alexander; Beyersdorf, Friedhelm; Caliskan, Kadir; Reineke, David; Damman, Kevin; Fiane, Arnt; Gkouziouta, Angeliki; Gollmann-Tepeköylü, Can; Gustafsson, Finn; Hulman, Michal; Iacovoni, Attilio; Loforte, Antonio; Merkely, Bela; ... (2022). The European Registry for Patients with Mechanical Circulatory Support of the European Association for Cardio-Thoracic Surgery: third report. European journal of cardio-thoracic surgery, 62(1) Oxford University Press 10.1093/ejcts/ezac032

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OBJECTIVES

In the third report of the European Registry for Patients with Mechanical Circulatory Support of the European Association for Cardio-Thoracic Surgery, outcomes of patients receiving mechanical circulatory support are reviewed in relation to implant era.

METHODS

Procedures in adult patients (January 2011-June 2020) were included. Patients from centres with <60% follow-ups completed were excluded. Outcomes were stratified into 3 eras (2011-2013, 2014-2017 and 2018-2020). Adverse event rates (AERs) were calculated and stratified into early phase (<3 months) and late phase (>3 months). Risk factors for death were explored using univariable Cox regression with a stepwise time-varying hazard ratio (<3 vs >3 months).

RESULTS

In total, 4834 procedures in 4486 individual patients (72 hospitals) were included, with a median follow-up of 1.1 (interquartile range: 0.3-2.6) years. The annual number of implants (range: 346-600) did not significantly change (P = 0.41). Both Interagency Registry for Mechanically Assisted Circulatory Support class (classes 4-7: 23, 25 and 33%; P < 0.001) and in-hospital deaths (18.5, 17.2 and 11.2; P < 0.001) decreased significantly between eras. Overall, mortality, transplants and the probability of weaning were 55, 25 and 2% at 5 years after the implant, respectively. Major infections were mainly noted early after the implant occurred (AER<3 months: 1.44 vs AER>3 months: 0.45). Bilirubin and creatinine levels were significant risk factors in the early phase but not in the late phase after the implant.

CONCLUSIONS

In its 10 years of existence, EUROMACS has become a point of reference enabling benchmarking and outcome monitoring. Patient characteristics and outcomes changed between implant eras. In addition, both occurrence of outcomes and risk factor weights are time dependent.

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