Increased long-term risk of major adverse cardiovascular events in patients with carbon monoxide poisoning: A population-based study in Taiwan

Chung-Shun Wong, Ying-Chin Lin, Li-Chin Sung, Tzu-Ting Chen, Hon-Ping Ma, Yung-Ho Hsu, Shin-Han Tsai, Yuh-Feng Lin and Mei-Yi Wu

PLOS ONE, 2017, vol. 12, issue 4, 1-9

Abstract: Background: Carbon monoxide (CO) poisoning may cause toxicity to the cardiovascular system. However, the association between CO poisoning and the risk of major adverse cardiovascular events (MACE) remains unestablished. We investigated the incidence of MACE after CO poisoning in Taiwan and evaluated whether CO-poisoned individuals had a higher risk of MACE than did the general population. Methods: Using Taiwan’s National Health Insurance Research Database (NHIRD) during 2005–2013, a nationwide population-based cohort study was conducted among patients who experienced CO poisoning between 2005 and 2013. CO poisoning was defined according to the International Classification of Diseases, Ninth Revision, Clinical Modification codes. The study cohort comprised patients with CO poisoning between 2005 and 2010 (N = 13,939). Each patient was matched according to age, sex and index date with four randomly selected controls from the comparison cohort (N = 55,756). All patients were followed from the study date until MACE development, death, or the end of 2013. The hazard ratios for MACE were compared between the two cohorts by using Cox proportional hazards regressions analyses. Results: Incident cases of MACE were identified from the NHIRD. After adjustment for potential confounders, the study cohort was independently associated with a higher MACE risk (adjusted hazard ratio, 2.00; 95% confidence interval, 1.83–2.18). Conclusion: This population-based cohort study indicated that patients with CO poisoning have a higher risk of MACE than do individuals without CO poisoning.

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0176465

DOI: 10.1371/journal.pone.0176465

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