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Long-term clinical outcomes in patients with cardiogenic shock according to left ventricular function: The French registry of Acute ST-elevation and non-ST-elevation Myocardial Infarction (FAST-MI) programme

Abstract : BACKGROUND: Cardiogenic shock (CS) complicating acute myocardial infarction (AMI) remains a major concern. Failure of the left ventricular (LV) pump is the primary insult in most forms of CS, but other parts of the circulatory system and diastolic function contribute to shock. However, little is known of the clinical presentation, management and outcomes according to LV function in these patients. OBJECTIVES: To assess the presentation, management and clinical outcomes in patients admitted for AMI with CS according to early LV ejection fraction (LVEF), using long-term data from the French registry of Acute ST-elevation or non-ST-elevation Myocardial Infarction (FAST-MI) 2010. METHODS: We analysed baseline characteristics, management and 3-year mortality in patients with CS, according to LVEF (≤40% vs>40%). The analyses were replicated in the FAST-MI 2005 cohort. RESULTS: Among 4169 patients with AMI included in the survey, the incidence of CS was 3.3%. LVEF was>40% in 43%. Early PCI (≤24hours) was used more often in patients with LV dysfunction (61% vs 42%), as was the use of optimal medical therapy at discharge (66% vs 40%). CS remained associated with a major increase in 3-year mortality, both in patients with LVEF ≤40% (55%) and in those with LVEF>40% (44%). Using Cox multivariable analysis, LVEF ≤40% was associated with higher 3-year mortality (hazard ratio 2.08, 95% confidence interval 1.15-3.78) in patients with AMI with CS. Consistent results were found in the replication cohort. CONCLUSIONS: Despite the many circulatory system contributors to the physiopathology of CS in patients with AMI, the occurrence of early LV systolic dysfunction is associated with higher long-term mortality.
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Nicolas Danchin, Etienne Puymirat, Grégoire Lefèvre, Clément Delmas, Laurent Bonello, et al.. Long-term clinical outcomes in patients with cardiogenic shock according to left ventricular function: The French registry of Acute ST-elevation and non-ST-elevation Myocardial Infarction (FAST-MI) programme. Archives of cardiovascular diseases, Elsevier/French Society of Cardiology, 2018, 111 (11), pp.678-685. ⟨10.1016/j.acvd.2017.11.002⟩. ⟨hal-02297634⟩

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