Health-related Quality of Life Measurement with St. George's Respiratory Questionnaire in Post-tuberculous Destroyed Lung

결핵후 폐손상에서 한국어판 St. George's Respiratory Questionnaire를 이용한 건강 관련 삶의 질 평가

  • Lee, Byoung Hoon (Department of Internal Medicine, Eulji General Hospital, Eulji University School of Medicine) ;
  • Kim, Young Sam (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Lee, Ki Deok (Department of Internal Medicine, Eulji General Hospital, Eulji University School of Medicine) ;
  • Lee, Jae Hyung (Department of Internal Medicine, Eulji General Hospital, Eulji University School of Medicine) ;
  • Kim, Sang-Hoon (Department of Internal Medicine, Eulji General Hospital, Eulji University School of Medicine)
  • 이병훈 (을지대학교 의과대학 을지병원 내과학교실) ;
  • 김영삼 (연세대학교 의과대학 내과학교실) ;
  • 이기덕 (을지대학교 의과대학 을지병원 내과학교실) ;
  • 이재형 (을지대학교 의과대학 을지병원 내과학교실) ;
  • 김상훈 (을지대학교 의과대학 을지병원 내과학교실)
  • Received : 2008.07.15
  • Accepted : 2008.08.11
  • Published : 2008.09.30

Abstract

Background: The control of active pulmonary tuberculosis is still an issue in community medicine. But there are also considerable needs for supportive management of symptomatic patients with post-tuberculous destroyed lung. Few studies have evaluated clinical characteristics and health-related quality of life in patients with post-tuberculous destroyed lung. Methods: We evaluated lung function, exercise tolerance, HRCT and health-related quality of life measurements using the Korean version of St. George's Respiratory Questionnaire (SGRQ) in 22 patients with parenchymal damage to more than a half of one lung due to pulmonary tuberculosis. Results: In the pulmonary function test, mixed defects and obstructive defects were observed in 10 (45.0%) and 9 (40.9%) of patients, respectively. In the cardiopulmonary exercise test, the mean $VO_2max%$ predicted ($39.0%{\pm}10.9%$) and $O_2$ pulse% predicted ($61.3%{\pm}13.6%$) were markedly decreased. In the SGRQ, the impact score (mean $27.8{\pm}18.5$) was significantly lower than the symptom score (mean $53.9{\pm}20.9$) or activity score (mean $50.8{\pm}27.3$) (p<0.05, p<0.01). Cronbach's alpha coefficient value for reliability was more than 0.7 for each subscale and total score. The total score showed a significant negative correlation with $FEV_1%$ predicted (r=-0.46, p<0.05) and $SaO_2$ (r=-0.60, p<0.05). On HRCT, a median of 9 (range 5~15) bronchopulmonary segments were destroyed by less than half, which significantly correlated with SGRQ total score (r=-0.52, p=0.02). Conclusion: The reliability and validity of the Korean version of the SGRQ was acceptable for the measurement of health-related quality of life in patients with post-tuberculous destroyed lung.

연구배경: 결핵후 폐손상 환자에서 나타나는 다양한 폐기능 장애는 이들의 건강관련 삶의 질에 심각한 영향을 주고 있을 것으로 추정되나 이에 대한 연구는 거의 없다. 결핵후 폐손상 환자에서의 임상적 특징을 알아보고, 나아가 만성 호흡기 질환에서 건강관련 삶의 질을 평가하는 도구로 널리 사용되고 있는 세인트조지 호흡기설문(St. George's Respiratory Questionnaire, SGRQ)의 한국어판이 결핵후 폐손상 환자에서도 유용하게 사용될 수 있을지를 평가하고자 하였다. 방 법: 폐결핵의 치료가 종결된 지 6개월 이상 경과하였으며 흉부 단순 촬영상 한 측 폐 1/2 이상의 손상이 관찰되는 결핵후 폐손상 환자에서 SGRQ를 시행하고 폐활량검사, 운동부하 심폐기능검사, HRCT의 결과와 비교하여 연관성을 살펴보고 SGRQ의 결핵후 폐손상의 평가에 있어 신뢰도와 타당도를 검정하였다. 결 과: 폐기능검사에서 혼합형 환기장애와 폐쇄성 환기장애는 각각 10명(45.0%), 9명(40.9%)에서 관찰되었다. 운동부하 심폐기능검사에서 평균 $VO_2max%$ predicted는 $39.0{\pm}10.9%$ 평균 $O_2$ pulse% predicted는 $61.3{\pm}13.6%$로 감소되어 있었다. 한국어판 SGRQ는 영향영역점수가 평균 $27.8{\pm}18.5$로 증상영역 평균 $53.9{\pm}20.9$ 활동영역 평균 $50.8{\pm}27.3$에 비하여 점수가 낮았다(p<0.05, p<0.01). Cronbach's alpha coefficient는 각각의 영역과 총 점수에서 모두 0.7 이상이었다. 총 점수는 $FEV_1%$ predicted(r=-0.46, p<0.05), 동맥혈산소포화도(r=-0.60, p<0.05), HRCT 비손상 기관지폐구역수(r=-0.52, p<0.05) 등과 관련이 있었다. 결 론: 결핵후 폐손상환자 대부분에서 폐쇄성 환기장애가 동반되었다. 한국어판 SGRQ는 결핵후 폐손상 환자의 삶의 질을 평가하는데 적절한 타당도와 신뢰도를 보여주었다.

Keywords

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