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Clinical presentation and outcome of perioperative myocardial infarction in the very elderly following hip fracture surgery
Author(s) -
Gupta Bhanu P.,
Huddleston Jeanne M.,
Kirkland Lisa L.,
Huddleston Paul M.,
Larson Dirk R.,
Gullerud Rachel E.,
Burton M. Caroline,
Rihal Charanjit S.,
Wright R. Scott
Publication year - 2012
Publication title -
journal of hospital medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.128
H-Index - 65
eISSN - 1553-5606
pISSN - 1553-5592
DOI - 10.1002/jhm.1967
Subject(s) - medicine , hip fracture , myocardial infarction , perioperative , hazard ratio , odds ratio , incidence (geometry) , mortality rate , asymptomatic , retrospective cohort study , confidence interval , perioperative medicine , surgery , emergency medicine , osteoporosis , physics , optics
Abstract BACKGROUND: Patterns of clinical symptoms and outcomes of perioperative myocardial infarction (PMI) in elderly patients after hip fracture repair surgery are not well defined. METHODS: A retrospective 1:2 case‐control study in a cohort of 1212 elderly patients undergoing hip fracture surgery from 1988 to 2002 in Olmsted County, Minnesota. RESULTS: The mean age was 85.3 ± 7.4 years; 76% female. PMI occurred in 167 (13.8%) patients within 7 days, of which 153 (92%) occurred in first 48 hours; 75% of patients were asymptomatic. Among patients with PMI, in‐hospital mortality was 14.4%, 30‐day mortality was 29 (17.4%), and 1‐year mortality was 66 (39.5%). PMI was associated with a higher inpatient mortality rate (odds ratio [OR], 15.1; confidence interval [CI], 4.6–48.8), 30‐day mortality (hazard ratio [HR], 4.3; CI, 2.1–8.9), and 1‐year mortality (HR, 1.9; CI, 1.4–2.7). CONCLUSION: Elderly patients, after hip fracture surgery, have a higher incidence of PMI and mortality than what guidelines indicate. The majority of elderly patients with PMI did not experience ischemic symptoms and required cardiac biomarkers for diagnosis. The results of our study support the measurement of troponin in postoperative elderly patients for the diagnosis of PMI, in order to implement in‐hospital preventive strategies to reduce PMI‐associated mortality. Journal of Hospital Medicine 2012. © 2012 Society of Hospital Medicine