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Prevalence of renal and hepatobiliary disease, laboratory abnormalities, and potentially toxic medication exposures among persons with COPD

Authors Mapel DW, Marton JP

Received 9 November 2012

Accepted for publication 11 January 2013

Published 15 March 2013 Volume 2013:8 Pages 127—134

DOI https://doi.org/10.2147/COPD.S40123

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Douglas W Mapel,1 Jenõ P Marton2

1Lovelace Clinic Foundation, Albuquerque, New Mexico, NM, USA; 2Health Economics and Outcomes Research, Pfizer Inc, New York, NY, USA


Background: The purpose of this study was to describe the prevalence of renal and hepatic disease, related laboratory abnormalities, and potentially hepatotoxic and nephrotoxic medication use in a population-based cohort of persons with chronic obstructive pulmonary disease (COPD).
Methods: This was a retrospective case-control cohort analysis of COPD patients enrolled in one regional health system for at least 12 months during a 36-month study period (n = 2284). Each COPD patient was matched by age and gender to up to three persons not diagnosed with COPD (n = 5959).
Results: The mean age for cases and controls was 70.3 years, and 52.5% were women. The COPD cohort had significantly higher prevalences (cases/100) of acute, chronic, and unspecified renal failure as compared with controls (1.40 versus 0.59, 2.89 versus 0.79, and 1.09 versus 0.44, respectively). Among the cases, 31.3% had at least one renal or urinary tract diagnosis during the study period, as compared with 21.1% of controls. COPD cases also had more gallbladder disease (2.76 versus 1.63) and pancreatic disease (1.40 versus 0.60), but not hepatic disease. COPD patients were more likely to have at least one serum creatinine level (5.1 versus 2.1) or liver aspartate aminotransferase level (4.5 versus 2.7) that was more than twice the upper limit of normal. COPD patients had prescription fills for an average of 17.6 potentially nephrotoxic and 27.4 hepatotoxic drugs during the study period, as compared with 13.6 and 19.9 for the controls (P value for all comparisons < 0.01).
Conclusion: COPD patients have a substantially increased prevalence of renal, gallbladder, and pancreatic diseases, as well as abnormal renal and hepatic laboratory values, but not diagnosed liver disease. COPD patients are also more likely to be prescribed medications with potentially toxic renal or hepatic side effects.

Keywords: chronic obstructive pulmonary disease, kidney diseases, liver diseases, epidemiology, toxicology, health care utilization

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