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First published online on March 30, 2007
Chest, doi:10.1378/chest.06-2280
A more recent version of this article appeared on June 1, 2007
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Prevalence of gastroesophageal reflux disease in patients with nontuberculous mycobacterial lung disease

Won-Jung Koh, MD; Jun Haeng Lee, MD; Yong Soo Kwon, MD; Kyung Soo Lee, MD; Gee Young Suh, MD; Man Pyo Chung, MD; Hojoong Kim, MD and O Jung Kwon, MD

From the Division of Pulmonary and Critical Care Medicine (Drs. Koh, Y. S. Kwon, Suh, Chung, Kim, and O. J. Kwon) and Gastroenterology (Dr. J. H. Lee), Department of Medicine and Department of Radiology (Dr. K. S. Lee), Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea

ojkwon{at}smc.samsung.co.kr

Abstract

BackgroundKnowledge of the relationship between respiratory disorders and gastroesophageal reflux disease (GERD) is increasing. However, the association between GERD and pulmonary disease caused by nontuberculous mycobacteria (NTM) has not been studied in detail. We investigated the prevalence of GERD in patients with the nodular bronchiectatic form of NTM lung disease.

MethodsFifty-eight patients with the nodular bronchiectatic form of NTM lung disease underwent ambulatory 24-h esophageal pH monitoring. Of the 58 patients, 27 patients were identified as having M. avium complex infection (15 with M. intracellulare and 12 with M. avium), and 31 patients had M. abscessus pulmonary infection.

ResultsThe prevalence of GERD in patients with the nodular bronchiectatic form of NTM lung disease was 26% (15/58). Only 27% (4/15) of these patients experienced typical GERD symptoms. No statistically significant differences were found between patients with GERD and those without GERD with regard to age, sex, body mass index, or pulmonary function test results. However, patients with GERD were more likely to have a sputum smear that was positive for acid-fast bacilli (12/15; 80%), compared with patients without GERD (19/43; 44%) (p = 0.033). In addition, bronchiectasis and bronchiolitis were observed in more lobes in patients with GERD than in patients without GERD (p = 0.008, p = 0.005, respectively).

ConclusionsPatients with the nodular bronchiectatic form of NTM lung disease have a high prevalence of increased esophageal acid exposure, usually without typical GERD symptoms.

Key Words: Atypical Mycobacteria, Mycobacterium avium complex • Lung Diseases • Gastroesophageal Reflux






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