Drug Resistance Rate of New Pulmonary Tuberculosis Patients Treated from the Private Sector in 2003~2005

2003~2005년도 민간 병의원 신환자에서 분리된 결핵균의 항결핵약제 내성률

  • Park, Young Kil (Korean Institute of Tuberculosis, Korean National Tuberculosis Association) ;
  • Park, Yoon Sung (Korean Institute of Tuberculosis, Korean National Tuberculosis Association) ;
  • Bai, Jeong Ym (Korean Institute of Tuberculosis, Korean National Tuberculosis Association) ;
  • Kim, Hee Jin (Korean Institute of Tuberculosis, Korean National Tuberculosis Association) ;
  • Lew, Woo Jin (Korean Institute of Tuberculosis, Korean National Tuberculosis Association) ;
  • Chang, Chul Hun (Korean Institute of Tuberculosis, Korean National Tuberculosis Association) ;
  • Lee, Hee Kyung (Department of Internal Medicine, Hanyang University College of Medicine)
  • 박영길 (대한결핵협회 결핵연구원) ;
  • 박윤성 (대한결핵협회 결핵연구원) ;
  • 배정임 (대한결핵협회 결핵연구원) ;
  • 김희진 (대한결핵협회 결핵연구원) ;
  • 류우진 (대한결핵협회 결핵연구원) ;
  • 장철훈 (대한결핵협회 결핵연구원) ;
  • 이희경 (한양대학교 의과대학 내과학교실)
  • Received : 2008.01.14
  • Accepted : 2008.01.31
  • Published : 2008.02.28

Abstract

Background: Surveillance of TB drug resistance (DR) is essential for providing information on the magnitude and trends in resistance, for developing treatment guidelines and for monitoring the effect of interventions. Up to now national surveys of drug resistance of M. tuberculosis have been conducted four times since 1994 among patients registered at health centers. The purpose of this study is to estimate the prevalence of primary drug resistance among new cases identified in private sector, and to compare it with the previous national drug resistance surveys. Methods: The study collected results of drug susceptibility testing (DST) performed at the Korean Institute of Tuberculosis by the request of private sector from January 2003 to December 2005, and then finally selected new cases for the analysis from the database of Korean TB Surveillance (KTBS) by matching patients' name and social identification numbers. Results: Of the 5,132 new patients included in the study, 689 (13.4%) patients were found to have drug resistance at least one drug, 530 patients (10.3%) were isoniazid resistant, 195 patients (3.8%) were multi-drug resistant (MDR), and 21 patients (0.4%) were extensively drug resistant (XDR). The rate of drug resistance tended to decrease annually but it was not statistically significant. When compared with previous national DR surveys in 2003 and in 2004 respectively, they were not significantly different. Conclusion: The prevalence of DR among new cases managed in the private sector did not show significant difference from that of new patients registered in the public sector in the same year.

연구배경: 항결핵 약제내성률은 국가결핵관리 사업을 평가하는 중요한 지표 중 하나이다. 최근 보건소보다 민간병의원에서 신고되는 결핵 신환자가 증가하는 추세에서, 이들을 대상으로 초회(일차) 내성률을 조사하고자 하였다. 방법: 2003년에서 2005년까지 민간병의원에서 결핵연구원에 약제감수성 검사를 의뢰한 환자와 결핵감시체계에 신고된 환자 중에서 성명과 주민등록번호가 일치하는 결핵 신환자를 선정하여 그 약제감수성 검사 결과를 조사 하였다. 결과: 3년간 조사 대상자는 5,132명이었고 이 중 내성환자는 689명으로 13.4%이었고, 다제 내성환자는 195명으로 3.8%이었으며, 광역 내성환자는 21명으로 0.4%이었다. 항결핵 약제 내성률이나 다제내성률에 있어서 3년간 통계적으로 유의할만한 내성률의 증감현상은 없었다. 약제별 내성에서는 이소니아지드 내성은 10.3%, 리팜핀 내성은 4.5%이었다. 결핵환자의 남녀 성비에 따른 차이는 남자가 60%, 여성은 40%로 있었지만, 성비에 따른 내성률의 차이는 없었다. 연령대 별로는 20대에서 19.6%로 가장 높았으며, 연령별 내성률은 50대에서 15.8%로 가장 높았고, 10대에서 9.6%로 가장 낮았다. 다제 내성률은 30대에서 5.3%로 가장 높았으며, 70대에서 1.4%로 가장 낮았다. 결론: 본 조사는 민간병의원 환자를 대상으로 검사실 자료를 이용한 최초의 항결핵 약제내성률 조사이며, 보건소 환자를 대상으로 실시한 약제내성률 조사 결과와 통계학적인 유의성을 보이지는 않았다.

Keywords

References

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