Michael G Nanna1, Alexandra M Hajduk2, Harlan M Krumholz3,4,5,6, Terrence E Murphy2, Rachel P Dreyer7, Karen P Alexander1, Mary Geda2, Sui Tsang2, Francine K Welty8, Basmah Safdar7, Dharshan K Lakshminarayan8, Sarwat I Chaudhry4,9, John A Dodson10,11. 1. Duke Clinical Research Institute, Duke University Medical Center, Durham, NC (M.G.N., K.P.A.). 2. Department of Internal Medicine, Geriatrics Section, Program on Aging (A.H., T.E.M., M.G., S.T.), Yale School of Medicine, New Haven, CT. 3. Section of Cardiovascular Medicine, Department of Internal Medicine (H.M.K.), Yale School of Medicine, New Haven, CT. 4. National Clinician Scholars Program, Department of Internal Medicine (H.M.K., S.I.C.), Yale School of Medicine, New Haven, CT. 5. Center for Outcomes Research and Evaluation, Yale-New Haven Hospital, New Haven, CT (H.M.K.). 6. Department of Health Policy and Management, Yale School of Public Health, New Haven, CT (H.M.K.). 7. Department of Emergency Medicine, Center for Outcomes Research and Evaluation (R.P.D., B.S.), Yale School of Medicine, New Haven, CT. 8. Division of Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA (F.W., D.K.L.). 9. Section of General Internal Medicine, Department of Internal Medicine (S.I.C.), Yale School of Medicine, New Haven, CT. 10. Leon H. Charney Division of Cardiology, Department of Medicine (J.A.D.), New York University School of Medicine. 11. Department of Population Health (J.A.D.), New York University School of Medicine.
Abstract
BACKGROUND: Studies of sex-based differences in older adults with acute myocardial infarction (AMI) have yielded mixed results. We, therefore, sought to evaluate sex-based differences in presentation characteristics, treatments, functional impairments, and in-hospital complications in a large, well-characterized population of older adults (≥75 years) hospitalized with AMI. METHODS AND RESULTS: We analyzed data from participants enrolled in SILVER-AMI (Comprehensive Evaluation of Risk Factors in Older Patients With Acute Myocardial Infarction)-a prospective observational study consisting of 3041 older patients (44% women) hospitalized for AMI. Participants were stratified by AMI subtype (ST-segment-elevation myocardial infarction [STEMI] and non-STEMI [NSTEMI]) and subsequently evaluated for sex-based differences in clinical presentation, functional impairments, management, and in-hospital complications. Among the study sample, women were slightly older than men (NSTEMI: 82.1 versus 81.3, P<0.001; STEMI: 82.2 versus 80.6, P<0.001) and had lower rates of prior coronary disease. Women in the NSTEMI subgroup presented less frequently with chest pain as their primary symptom. Age-associated functional impairments at baseline were more common in women in both AMI subgroups (cognitive impairment, NSTEMI: 20.6% versus 14.3%, P<0.001; STEMI: 20.6% versus 12.4%, P=0.001; activities of daily living disability, NSTEMI: 19.7% versus 11.4%, P<0.001; STEMI: 14.8% versus 6.4%, P<0.001; impaired functional mobility, NSTEMI: 44.5% versus 30.7%, P<0.001; STEMI: 39.4% versus 22.0%, P<0.001). Women with AMI had lower rates of obstructive coronary disease (NSTEMI: P<0.001; STEMI: P=0.02), driven by lower rates of 3-vessel or left main disease than men (STEMI: 38.8% versus 58.7%; STEMI: 24.3% versus 32.1%), and underwent revascularization less commonly (NSTEMI: 55.6% versus 63.6%, P<0.001; STEMI: 87.3% versus 93.3%, P=0.01). Rates of bleeding were higher among women with STEMI (26.2% versus 15.6%, P<0.001) but not NSTEMI (17.8% versus 15.7%, P=0.21). Women had a higher frequency of bleeding following percutaneous coronary intervention with both NSTEMI (11.0% versus 7.8%, P=0.04) and STEMI (22.6% versus 14.8%, P=0.02). CONCLUSIONS: Among older adults hospitalized with AMI, women had a higher prevalence of age-related functional impairments and, among the STEMI subgroup, a higher incidence of overall bleeding events, which was driven by higher rates of nonmajor bleeding events and bleeding following percutaneous coronary intervention. These differences may have important implications for in-hospital and posthospitalization needs.
BACKGROUND: Studies of sex-based differences in older adults with acute myocardial infarction (AMI) have yielded mixed results. We, therefore, sought to evaluate sex-based differences in presentation characteristics, treatments, functional impairments, and in-hospital complications in a large, well-characterized population of older adults (≥75 years) hospitalized with AMI. METHODS AND RESULTS: We analyzed data from participants enrolled in SILVER-AMI (Comprehensive Evaluation of Risk Factors in Older Patients With Acute Myocardial Infarction)-a prospective observational study consisting of 3041 older patients (44% women) hospitalized for AMI. Participants were stratified by AMI subtype (ST-segment-elevationmyocardial infarction [STEMI] and non-STEMI [NSTEMI]) and subsequently evaluated for sex-based differences in clinical presentation, functional impairments, management, and in-hospital complications. Among the study sample, women were slightly older than men (NSTEMI: 82.1 versus 81.3, P<0.001; STEMI: 82.2 versus 80.6, P<0.001) and had lower rates of prior coronary disease. Women in the NSTEMI subgroup presented less frequently with chest pain as their primary symptom. Age-associated functional impairments at baseline were more common in women in both AMI subgroups (cognitive impairment, NSTEMI: 20.6% versus 14.3%, P<0.001; STEMI: 20.6% versus 12.4%, P=0.001; activities of daily living disability, NSTEMI: 19.7% versus 11.4%, P<0.001; STEMI: 14.8% versus 6.4%, P<0.001; impaired functional mobility, NSTEMI: 44.5% versus 30.7%, P<0.001; STEMI: 39.4% versus 22.0%, P<0.001). Women with AMI had lower rates of obstructive coronary disease (NSTEMI: P<0.001; STEMI: P=0.02), driven by lower rates of 3-vessel or left main disease than men (STEMI: 38.8% versus 58.7%; STEMI: 24.3% versus 32.1%), and underwent revascularization less commonly (NSTEMI: 55.6% versus 63.6%, P<0.001; STEMI: 87.3% versus 93.3%, P=0.01). Rates of bleeding were higher among women with STEMI (26.2% versus 15.6%, P<0.001) but not NSTEMI (17.8% versus 15.7%, P=0.21). Women had a higher frequency of bleeding following percutaneous coronary intervention with both NSTEMI (11.0% versus 7.8%, P=0.04) and STEMI (22.6% versus 14.8%, P=0.02). CONCLUSIONS: Among older adults hospitalized with AMI, women had a higher prevalence of age-related functional impairments and, among the STEMI subgroup, a higher incidence of overall bleeding events, which was driven by higher rates of nonmajor bleeding events and bleeding following percutaneous coronary intervention. These differences may have important implications for in-hospital and posthospitalization needs.
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