Tuberculosis and Respiratory Diseases

The Korean Academy of Tuberculosis and Respiratory Diseases (대한결핵및호흡기학회)
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Analysis of Characteristics and Prognostic Factors in Adult Patients Receiving Mechanical Ventilation in the Medical Intensive Care Unit of a University Hospital

한 대학병원 내과계 중환자실의 기계환기 시행 환자의 현황 및 예후인자의 분석

  • Song, Jin Woo (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Choi, Chang-Min (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Hong, Sang-Bum (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Oh, Yeon-Mok (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Shim, Tae Sun (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Lim, Chae-Man (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Lee, Sang-Do (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Kim, Woo Sung (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Kim, Dong Soon (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Kim, Won Dong (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Koh, Younsuck (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
  • 송진우 (울산대학교 의과대학 서울아산병원 호흡기내과) ;
  • 최창민 (울산대학교 의과대학 서울아산병원 호흡기내과) ;
  • 홍상범 (울산대학교 의과대학 서울아산병원 호흡기내과) ;
  • 오연목 (울산대학교 의과대학 서울아산병원 호흡기내과) ;
  • 심태선 (울산대학교 의과대학 서울아산병원 호흡기내과) ;
  • 임채만 (울산대학교 의과대학 서울아산병원 호흡기내과) ;
  • 이상도 (울산대학교 의과대학 서울아산병원 호흡기내과) ;
  • 김우성 (울산대학교 의과대학 서울아산병원 호흡기내과) ;
  • 김동순 (울산대학교 의과대학 서울아산병원 호흡기내과) ;
  • 김원동 (울산대학교 의과대학 서울아산병원 호흡기내과) ;
  • 고윤석 (울산대학교 의과대학 서울아산병원 호흡기내과)
  • Received : 2008.08.19
  • Accepted : 2008.10.06
  • Published : 2008.10.30
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Abstract

Background: Respiratory failure is a common condition that requires intensive care, and has a high mortality rate despite the recent improvements in respiratory care. Previous reports of patients with respiratory failure focused on the specific disease or included a large proportion of surgical patients. This study evaluated the clinical characteristics, outcomes and prognostic factors of adult patients receiving mechanical ventilation in a medical intensive care unit. Methods: Retrospective chart review was performed on 479 adult patients, who received mechanical ventilation for more than 48 hours in the medical ICU of one tertiary referral hospital. Results: The mean age of the patients was $60.3{\pm}15.6$ years and 34.0% were female. The initial mean APACHE III score was $72.3{\pm}25$. The cause of MV included acute respiratory failure (71.8%), acute exacerbation of chronic pulmonary disease (20.9%), coma (5.6%), and neuromuscular disorders (1.7%). Pressure controlled ventilation was used as the initial ventilator mode in 67.8% of patients, and pressure support ventilation was used as the initial weaning mode in 83.6% of the patients. The overall mortality rate in the ICU and hospital was 49.3% and 55.4%, respectively. The main cause of death in hospital was septic shock (32.5%), respiratory failure (11.7%), and multiorgan failure (10.2%). Males, an APACHE III score >70, the cause of respiratory failure (interstitial lung disease, coma, aspiration, pneumonia, sepsis and hemoptysis), the total ventilation time, and length of stay in hospital were independently associated with mortality. Conclusion: The cause of respiratory failure, severity of the patients, and gender appears to be significantly associated with the outcome of mechanical ventilatory support in patients with respiratory failure.

연구배경: 호흡부전은 중환자실 치료가 필요한 흔한 원인 중 하나로, 호흡보조치료의 발전에도 불구하고 높은 사망률을 보이고 있다. 호흡부전환자에 대한 기존의 국내보고는, 특정질환만을 대상으로 하거나, 외과계 환자가 상당수 포함되어 있어, 내과계 호흡부전 환자들의 현황을 알기가 어렵다. 본 연구에서는 한 내과계 중환자실에서 기계환기치료를 시행 받은 성인환자들의 임상적 특성과 치료성적 및 예후와 관련된 인자를 알아보고자 하였다. 방 법: 한 3차 병원 내과계 중환자실에서 48시간 이상 기계환기치료를 받은 479명의 성인환자를 대상으로 의무기록을 후향적으로 분석하였다. 결 과: 대상환자의 평균연령은 $60.3{\pm}15.6$세였고, 34.0%가 여성이었다. 중환자실 입실시점의 APACHE III 점수의 평균값은 $72.3{\pm}25$점이었다. 호흡부전의 원인은 급성호흡부전(71.8%), 만성폐질환의 급성악화(20.9%), 혼수(5.6%), 신경근육계질환(1.7%)이었다. 초기 기계환기방식으로는 67.8%에서 압력조절환기법이 사용되었고, 초기 이탈방식으로는 압력보조환기법이 83.6%에서 사용되었다. 중환자실 사망률은 49.3%, 병원사망률은 55.4%였다. 주된 병원내 사망원인은 패혈성 쇼크(32.5%), 호흡부전(11.7%), 다발성 장기부전(10.2%)이었다. 남성, APACHE III 점수가 70점 이상, 호흡부전의 원인이 간질성폐질환, 혼수, 흡인, 폐렴, 패혈증, 객혈인 경우, 총 기계환기시간 및 병원 재원일이 사망과 독립적으로 관련되었다. 결 론: 호흡부전의 원인질환, 환자의 중증도, 성별에 따라 호흡부전환자의 예후에 차이가 있었다.

Keywords

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