Isolation and Antimicrobial Susceptibility of Nontuberculous Mycobacteria in a Tertiary Hospital in Korea, 2016 to 2020

Tuberculosis and Respiratory Diseases

article

Keun Ju Kim¹  Seung-Hwan Oh²  Doosoo Jeon³  Chulhun L. Chang² 

[1] Department of Laboratory Medicine, Korea University Anam Hospital, Korea University College of Medicine;Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital;Department of Internal Medicine, Pusan National University Yangsan Hospital, Pusan National University School of Medicin

关键词: Antimicrobial Susceptibility Testing;    Nontuberculous Mycobacteria;    Mycobacterium avium Complex;    Clarithromycin;    Amikacin;   

DOI  :  10.4046/trd.2022.0115

学科分类：医学（综合）

来源: The Korean Academy of Tuberculosis and Respiratory Diseases

【 摘 要 】

Background There is a global increase in isolation of nontuberculous mycobacteria (NTM). The aim of the study was to analyze longitudinal trends of NTM identification and pattern of antimicrobial susceptibility testing. Methods NTM recovery rates, distribution of NTM species identification, and antimicrobial susceptibility pattern of NTM at Pusan National University Yangsan Hospital between January 2016 and December 2020 were retrospectively analyzed. Results A total of 52,456 specimens from 21,264 patients were submitted for mycobacterial culture, of which 2,521 from 1,410 patients were NTM positive over five years (January 2016 to December 2020). NTM isolation showed an increasing trend from 2016 to 2020 (p<0.001, test for trend) mainly caused by Mycobacterium avium complex. The vast majority of M. avium complex were susceptible to key agents clarithromycin and amikacin. For Mycobacterium kansasii, resistance to rifampin and clarithromycin is rare. Amikacin was the most effective drug against Mycobacterium abscessus subspecies abscessus and Mycobacterium subspecies massiliense. Most of M. subspecies massiliense were susceptible to clarithromycin, while the majority of M. abscessus subspecies abscessus were resistant to clarithromycin (p<0.001). Conclusion There was an increasing trend of NTM isolation in our hospital. Resistance to key drugs was uncommon for most NTM species except for M. abscessus subspecies abscessus against clarithromycin.

【 授权许可】

CC BY-NC