BACKGROUND
Secondary prevention medications are recommended for older adults
after acute myocardial infarction (AMI), but little is known about whether
nursing home (NH) residents receive these medications.
OBJECTIVES
To evaluate new use of secondary prevention medications after AMI in
NH residents who were previously non-users, and to evaluate which factors
were associated with use.
DESIGN
Retrospective cohort using linked national Minimum Data Set
assessments; Online Survey, Certification and Reporting (OSCAR) records; and
Medicare claims.
SETTING
U.S. NHs.
PARTICIPANTS
National cohort of 11,192 residents aged ≥65 years who were
hospitalized for an AMI May 2007-March 2010, had no beta-blocker or statin
usage for ≥4 months prior, and survived ≥14 days after NH
readmission.
MEASUREMENTS
The outcome was the number of secondary prevention medications
initiated within 30 days of NH readmission.
RESULTS
Thirty-seven percent of residents initiated no secondary prevention
medications after AMI, 41% initiated one, and 22% two. After
covariate adjustment, use of more secondary prevention medications declined
with advancing age (down to proportional odds ratio (POR)=0.48, 95%
confidence interval (CI)=0.40–0.57 for ≥95 versus
65–74 years), female sex (POR=0.88, 95%
CI=0.80–0.96), do not resuscitate (DNR) order presence (POR=0.90,
95% CI=0.83–0.98), functional impairment (dependent or
totally dependent versus independent to limited assistance, POR=0.77,
95% CI=0.69–0.86) and cognitive impairment (moderate to
severe dementia versus cognitively intact, POR=0.79, 95%
CI=0.70–0.89).
CONCLUSION
More than one-third of older NH residents in the U.S. do not initiate
any secondary prevention medications after AMI, with fewer medications
initiated among residents with older age, female sex, DNR orders, poor
physical functioning, and cognitive impairment. A lack of evidence for the
NH population and unmeasured patient-centered goals of care are both
plausible explanations for these findings.