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Maddox TM, Reid KJ, Spertus JA, et al. Angina at 1 Year After Myocardial Infarction: Prevalence and Associated Findings. Arch Intern Med. 2008;168(12):1310–1316. doi:10.1001/archinte.168.12.1310
Eradication of angina is a primary goal of care after myocardial infarction (MI). However, the prevalence of angina 1 year after MI and factors associated with it are unknown.
From January 1, 2003, through June 28, 2004, 2498 patients with acute MI were recruited from 19 hospitals in the United States. Among this multicenter cohort of patients, angina was measured by the Seattle Angina Questionnaire 1 year after hospitalization for MI. Multivariate regression modeling identified the sociodemographic factors, clinical history, MI presentation, inpatient treatments, and outpatient treatments associated with 1-year angina, adjusted for site.
Of 1957 patients in the cohort, 389 (19.9%) reported angina 1 year after MI. After multivariate analysis, patients with 1-year angina were more likely to be younger (relative risk [RR] per 10-year decrease, 1.19; 95% confidence interval [CI], 1.09-1.30), to be nonwhite males (RR, 1.50; 95% CI, 1.16-1.96), to have had prior angina (RR, 1.78; 95% CI, 1.54-2.06), to have undergone prior coronary artery bypass graft surgery (RR, 1.92; 95% CI, 1.51-2.44), and to experience recurrent rest angina during their hospitalization (RR, 1.54; 95% CI, 1.22-1.93). Among the outpatient variables, patients with 1-year angina were more likely to continue smoking (RR, 1.23; 95% CI, 1.02-1.48), to undergo revascularization after index hospitalization (percutaneous coronary intervention or coronary artery bypass graft) (RR, 1.37; 95% CI, 1.09-1.73), and to have significant new (RR, 1.96; 95% CI, 1.34-2.87), persistent (RR, 1.88; 95% CI, 1.29-2.75), or transient (RR, 1.77; 95% CI, 1.49-2.11) depressive symptoms.
Angina occurs in nearly 1 of 5 patients 1 year after MI. It is associated with several modifiable factors, including persistent smoking and depressive symptoms.
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