Encouraging survival rates in patients with acute myocardial infarction treated with an intra-aortic balloon pump |
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Authors: | S. D. A. Valk J. M. Cheng C. A. den Uil W. K. Lagrand M. van der Ent M. van de Sande R. T. van Domburg M. L. Simoons |
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Affiliation: | 1Department of Cardiology, Thorax Center, Erasmus MC, Room Ba 577,’s Gravendijkwal 230, 3015 CE Rotterdam, the Netherlands ;2Department of Intensive Care Medicine, Academic Medical Center, Amsterdam, the Netherlands ;3Department of Cardiology, Maasstad Hospital, location Zuider, Rotterdam, the Netherlands |
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Abstract: | ObjectiveTo evaluate a 30-day and long-term outcome of patients with acute myocardial infarction (AMI) treated with intra-aortic balloon pump (IABP) counterpulsation and to identify predictors of a 30-day and long-term all-cause mortality.MethodsRetrospective cohort study of 437 consecutive AMI patients treated with IABP between January 1990 and June 2004. A Cox proportional hazards model was used to identify predictors of a 30-day and long-term all-cause mortality.ResultsMean age of the study population was 61 ± 11 years, 80% of the patients were male, and 68% had cardiogenic shock. Survival until IABP removal after successful haemodynamic stabilisation was 78% (n = 341). Cumulative 30-day survival was 68%. Median follow-up was 2.9 years (range, 6 months to 15 years). In patients who survived until IABP removal, cumulative 1-, 5-, and 10-year survival was 75%, 61%, and 39%, respectively. Independent predictors of higher long-term mortality were prior cerebrovascular accident (hazard ratio (HR), 1.8; 95% confidence interval (CI), 1.0–3.4), need for antiarrhythmic drugs (HR, 2.3; 95% CI, 1.5–3.3), and need for renal replacement therapy (HR, 2.3; 95% CI, 1.2–4.3). Independent predictors of lower long-term mortality were primary percutaneous coronary intervention (PCI; HR, 0.6; 95% CI, 0.4–1.0), failed thrombolysis with rescue PCI (HR, 0.5; 95% CI, 0.3–0.9), and coronary artery bypass grafting (HR, 0.3; 95% CI, 0.1–0.5).ConclusionsDespite high in-hospital mortality in patients with AMI treated with IABP, a favourable number of patients survived in the long-term. These results underscore the value of aggressive haemodynamic support of patients throughout the acute phase of AMI. |
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Keywords: | Acute myocardial infarction Intra-aortic balloon pump Outcome Predictors Survival |
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