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Cardiac injury in patients with COPD presenting with dyspnea: a pilot study

Authors Odigie-Okon E, Jordan B, Dijeh S, Wolff A, Dadu R, Lall P, Zarich S, Amoateng-Adjepong Y, Manthous CA

Published 9 November 2010 Volume 2010:5 Pages 395—399


Review by Single-blind

Peer reviewer comments 4

Esosa Odigie-Okon, Bryan Jordan, Sylvester Dijeh, Armand Wolff, Razvan Dadu, Priyanka Lall, Stuart Zarich, Yaw Amoateng-Adjepong, Constantine A Manthous
Bridgeport Hospital and Yale University School of Medicine, Bridgeport, CT, USA

Purpose: The aim of this pilot study was to test the hypothesis that myocardial ischemia complicates the management of some patients with chest-pain-free chronic obstructive pulmonary disease (COPD) exacerbations.
Methods: In this prospective, observational, cohort study, patients admitted to a 350-bed community teaching hospital, with dyspnea and a primary diagnosis of COPD exacerbation, were followed for enzymatic and electrocardiographic evidence of myocardial ischemia for the first 24 hours of hospital admission.
Results: A total of 114 patients were studied. Overall, four patients had definite myocardial infarctions, one had definite myocardial ischemia and 14 had possible myocardial ischemia. In multiple logistic regression models, age, number of coronary risk factors, and amount of administered albuterol were not associated with myocardial injury.
Conclusion: While unrecognized myocardial injury is relatively rare in patients with an exacerbation of COPD, it occurs frequently enough to warrant some caution since beta-agonists are the mainstays of therapy.

Keywords: COPD, myocardial ischemia, acute coronary syndrome, troponin

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