• Am. J. Med. · May 2020

    Causes of Death in Patients With Acute and Chronic Myocardial Injury.

    • Erik Kadesjö, Andreas Roos, Anwar J Siddiqui, Ulrik Sartipy, and Martin J Holzmann.
    • Department of Medicine, Karolinska Institutet, Solna, Sweden; Functional Area of Emergency Medicine, Karolinska University Hospital, Huddinge, Sweden.
    • Am. J. Med. 2020 May 1; 133 (5): 590-598.e2.

    BackgroundInformation about causes of death in patients with myocardial injury is limited. The purpose of this study was to explore causes of death in patients with myocardial injury.MethodsIn a cohort of 22,589 patients, 3853 patients with myocardial injury were identified and categorized into: type 1 myocardial infarction, type 2 myocardial infarction, and nonischemic acute and chronic myocardial injury. We included all 1466/3853 (38%) patients who died during follow-up (3.9 ± 2 years). We estimated rates and adjusted odds ratio (OR) with 95% confidence interval (CI) for causes of death in the 4 categories of myocardial injury using patients without myocardial injury 819/17,932 (4.6%) who died as reference.ResultsThe study cohort included 2285 patients. The proportion of cardiovascular deaths was higher in patients with type 1 myocardial infarction (48%), acute (43%), and chronic (45%) myocardial injury and type 2 myocardial infarction (39%) compared with patients without myocardial injury (25%). Adjusted rates for cardiovascular death were similar in patients with myocardial injury. Type 1 myocardial infarction, acute, and chronic myocardial injury was associated with a 77% (OR: 1.77, 95% CI 1.29-2.41), 40% (OR: 1.40, 95% CI: 1.07-1.84), and 36% (OR: 1.36, 95% CI: 1.05-1.76) higher risk of cardiovascular death.ConclusionsPatients with type 1 myocardial infarction and acute or chronic myocardial injury have similar proportions and high risks for cardiovascular death. We believe that these findings stress the need for investigating patients without known heart diseases who present with nonischemic myocardial injury, or type 2 myocardial infarction.Copyright © 2019 Elsevier Inc. All rights reserved.

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