Nationwide trends in the prescription of beta-blockers and angiotensin-converting enzyme inhibitors after myocardial infarction in Denmark, 1995–2002

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Abstract
Objectives To study the use of beta-blockers and angiotensin-converting enzyme (ACE) inhibitors after acute myocardial infarction (AMI) in Denmark from 1995 to 2002. Design Information about patients with first AMI aged ≥30 years and the dispensing of beta-blockers and ACE inhibitors from pharmacies within 30 d from discharge was obtained from the National Patient Registry and the Danish Registry of Medicinal Product Statistics. Results Beta-blocker use increased from 38.1% of patients in 1995 to 67.9% in 2002 (OR=3.85, CI: 3.58–4.13). Women, elderly patients and patients taking loop-diuretics and antidiabetic drugs received beta-blockers less frequently, but patients taking loop-diuretics or antidiabetic drugs had the greatest increase. ACE inhibitor use increased from 24.5 to 35.5% (OR=1.86, CI: 1.72–2.01). Women, patients aged Conclusions Beta-blocker use increased markedly post-AMI from 1995 to 2002, whereas ACE inhibitor use increased modestly. The results suggested undertreatment of women, elderly patients and people with diabetes.