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- Aakriti Gupta, Sui Tsang, Alexandra Hajduk, Harlan M Krumholz, Michael G Nanna, Philip Green, John A Dodson, and Sarwat I Chaudhry.
- Section of Cardiovascular Medicine, Department of Medicine, Columbia University Irving Medical Center, New York, NY; Center for Outcomes Research and Evaluation, Yale-New Haven Hospital, New Haven, Conn; Cardiovascular Research Foundation, New York, NY.
- Am. J. Med. 2021 Jan 1; 134 (1): 9510395-103.
BackgroundOldest-old patients (≥85 years) constitute half the acute myocardial infarction hospitalizations among older adults and more commonly have atypical presentation, under-treatment, and functional impairments. Yet this group has not been well characterized. We characterized differences in presentation, functional impairments, treatments, health status, and mortality among middle-old (75-84 years) and oldest-old patients with myocardial infarction.MethodsWe analyzed data from the ComprehenSIVe Evaluation of Risk Factors in Older Patients with AMI (SILVER-AMI) study that enrolled 3041 patients ≥75 years of age from 94 hospitals across the US between 2013 and 2016. We performed Cox proportional hazards regression to examine the association between the oldest-old (n = 831) and middle-old (n = 2210) age categories with postdischarge 6-month case fatality rate adjusting for sociodemographic and clinical variables, and mobility impairment.ResultsThe oldest-old were less likely to present with chest pain (52.7% vs 57.7%) as their primary symptom or to receive coronary revascularization (58.1% vs 71.8) (P < .01 for both). The oldest-old were more likely to have functional impairments and had higher 6-month mortality compared with the middle-old patients (hazard ratio 1.78, 95% confidence interval, 1.39-2.28). This association was substantially attenuated after adjusting for mobility impairment (hazard ratio 1.29, confidence interval, 0.99-1.68).ConclusionsThere is considerable heterogeneity in presentation, treatment, and outcomes among older patients with myocardial infarction. Mobility impairment, a marker for frailty, modifies the association between advanced age and treatments as well as outcomes.Copyright © 2020 Elsevier Inc. All rights reserved.
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