β-Blocker use following myocardial infarction: Low prevalence of evidence-based dosing

Jeffrey J. Goldberger, Robert O Bonow, Michael Cuffe, Alan Richard Dyer, Yves Rosenberg, Robert O'Rourke, Prediman K. Shah, Sidney C. Smith

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Background: Quality improvement programs have shown increased use of β-blockers post-myocardial infarction (MI), but there are no data on whether appropriate doses are administered. Methods: In a prospective registry that enrolled consecutive patients with MI, we evaluated β-blocker dosing at discharge after MI and 3 weeks later and assessed clinical predictors for treatment with very low doses. We studied 1,971 patients (70.8% male) with a mean age of 63.9 ± 13.7 years, of whom 48.2% had an ST-elevation MI. Results: β-Blocker utilization rates following MI were 93.2% at discharge: 20.1% received <25% of target dose, 36.5% received 25% of target dose, 26.4% received 26% to 50% of target dose, and 17.0% received >50% of target dose. Between discharge and 3 weeks, 76.4% had no change in β-blocker dose, with 11.9% and 11.6% having their dose reduced and increased, respectively. Absence of hypertension, acute percutaneous coronary intervention, older age, and no angiotensin-converting enzyme inhibitor therapy were consistent predictors of treatment with very low β-blocker doses. Conclusions: Underdosing of β-blockers is highly prevalent among patients post-MI. This represents an important opportunity in quality improvement for the care of patients who have suffered an MI.

Original languageEnglish (US)
Pages (from-to)435-442.e1
JournalAmerican heart journal
Volume160
Issue number3
DOIs
StatePublished - Sep 2010

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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