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Long-term medication adherence after myocardial infarction: experience of a community

Nilay D Shah1, Shannon M Dunlay, Henry H Ting

  • 1Division of Health Care Policy and Research, Mayo Clinic College of Medicine, Rochester, MN 55905, USA. shah.nilay@mayo.edu

The American Journal of Medicine
|June 30, 2009
PubMed

Insights

Long-term medication adherence after myocardial infarction is crucial for improved outcomes. Cardiac rehabilitation significantly boosts adherence to essential heart medications, while smoking is linked to lower adherence rates.

Area of Science:

  • Cardiology
  • Pharmacology
  • Public Health

Background:

  • Medication adherence post-myocardial infarction (MI) is vital for patient outcomes.
  • Long-term data on factors influencing medication adherence after MI are limited.

Purpose of the Study:

  • To investigate long-term medication adherence patterns after myocardial infarction.
  • To identify factors associated with sustained adherence to evidence-based medications.

Main Methods:

  • Retrospective cohort study of Olmsted County residents hospitalized with MI (1997-2006).
  • Examined adherence to statins, beta-blockers, ACE inhibitors, and ARBs.
  • Utilized Cox proportional hazard regression to analyze adherence factors over time.

Main Results:

  • Adherence to guideline-recommended medications decreased significantly over time.
  • 3-year continuation rates were 44% (statins), 48% (beta-blockers), and 43% (ACE inhibitors/ARBs).
  • Cardiac rehabilitation enrollment improved medication continuation (statins: aHR 0.66; beta-blockers: aHR 0.70). Smoking showed a trend towards decreased adherence.

Conclusions:

  • A substantial number of patients discontinue crucial medications after myocardial infarction.
  • Cardiac rehabilitation participation is a key factor in improving long-term medication adherence post-MI.
Abstract

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