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Intravenous beta-blocker therapy in ST-Segment Elevation Myocardial Infarction treated with primary percutaneous coronary intervention is not associated with benefit regarding short-term mortality: A Swedish Nationwide Observational Study.

Intravenous beta-blocker therapy in ST-Segment Elevation Myocardial Infarction treated with primary percutaneous coronary intervention is not associated with benefit regarding short-term mortality: A Swedish Nationwide Observational Study.
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Mohammad MA, Andell P, Koul S, Desta L, Jernberg T, Omerovic E, Spaak J, Fröbert O, Jensen J, Engstrøm T, Hofman-Bang C, Persson H, Erlinge D,


Mohammad MA, Andell P, Koul S, Desta L, Jernberg T, Omerovic E, Spaak J, Fröbert O, Jensen J, Engstrøm T, Hofman-Bang C, Persson H, Erlinge D, (click to view)

Mohammad MA, Andell P, Koul S, Desta L, Jernberg T, Omerovic E, Spaak J, Fröbert O, Jensen J, Engstrøm T, Hofman-Bang C, Persson H, Erlinge D,

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EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology 2017 02 28() pii EIJ-D-16-01021
Abstract
AIMS
To investigate the impact of intravenous (IV) beta-blocker therapy on short-term mortality and other in-hospital events in patients with ST-segment elevation myocardial infarction (STEMI) treated with dual antiplatelet therapy (DAPT) and primary percutaneous coronary intervention (PCI).

METHODS AND RESULTS
Using the nationwide Swedish Web-system for Enhancement and Development of Evidence-based care in Heart disease Evaluated According to Recommended Therapies (SWEDEHEART) registry, we identified all patients with STEMI undergoing PCI between 2006 and 2013. Patients with cardiogenic shock and cardiac arrest at presentation were excluded. The primary endpoint was mortality within 30 days. Secondary endpoints were in-hospital events (mortality, cardiogenic shock and left ventricular ejection fraction (LVEF) <40% at discharge). We adjusted for confounders with a multivariable model and propensity score matching. Out of 16,909 patients, 2,876 (17.0%) were treated with an IV beta-blocker. After adjusting for confounders, the IV beta-blocker group had higher 30 day all-cause mortality (HR: 1.44, 95% CI 1.14-1.83), more in-hospital cardiogenic shock (OR: 1.53, 95% CI 1.09-2.16) and were more often discharged with an LVEF <40% (OR: 1.70, 95% CI 1.51-1.92). CONCLUSIONS
In this large nationwide observational study, the use of IV beta-blocker in patients with STEMI treated with primary PCI was associated with higher short-term mortality, lower LVEF at discharge, as well as a higher risk of in-hospital cardiogenic shock.

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