Clinical Characteristics and Prognosis of Acinetobacter Nosocomial Pneumonia between MDR and non-MDR

Acinetobacter 병원내 폐렴에서 다제 내성군과 약제 감수성군 간의 임상적 특징과 예후

  • Park, In-Il (Division of Pulmonary, Allergy and Critical Care Medicine of Hallym University Medical Center, Hallym University College of Medicine) ;
  • Kim, Ick-Keun (Division of Pulmonary, Allergy and Critical Care Medicine of Hallym University Medical Center, Hallym University College of Medicine) ;
  • Koo, Hyun-Cheol (Division of Pulmonary, Allergy and Critical Care Medicine of Hallym University Medical Center, Hallym University College of Medicine) ;
  • Han, Jae-Pil (Division of Pulmonary, Allergy and Critical Care Medicine of Hallym University Medical Center, Hallym University College of Medicine) ;
  • Kim, Young-Mook (Division of Pulmonary, Allergy and Critical Care Medicine of Hallym University Medical Center, Hallym University College of Medicine) ;
  • Lee, Myung-Goo (Division of Pulmonary, Allergy and Critical Care Medicine of Hallym University Medical Center, Hallym University College of Medicine) ;
  • Jung, Ki-Suck (Division of Pulmonary, Allergy and Critical Care Medicine of Hallym University Medical Center, Hallym University College of Medicine)
  • 박인일 (한림대학교 의과대학 내과학교실) ;
  • 김익근 (한림대학교 의과대학 내과학교실) ;
  • 구현철 (한림대학교 의과대학 내과학교실) ;
  • 한재필 (한림대학교 의과대학 내과학교실) ;
  • 김영묵 (한림대학교 의과대학 내과학교실) ;
  • 이명구 (한림대학교 의과대학 내과학교실) ;
  • 정기석 (한림대학교 의과대학 내과학교실)
  • Received : 2006.05.11
  • Accepted : 2006.06.21
  • Published : 2006.07.30

Abstract

Background: Acinetobacter baumannii has emerged as an important nosocomial pathogen worldwide. The incidence of these infections has recently begun to increase. The mortality rate associated with these infections is high (bacteremia; 52%, pneumonia: 23%~73%) and multidrug resistance has been reported. For the effective control of multidrug-resistant Acinetobacter baumannii(MDR-AB), the impact of these organisms in clinical practice should be determined. This study compared the clinical characteristics, mortality and morbidity of Acinetobacter nosocomial pneumonia between MDR strain and non-MDR strain. Methods: From Jan. 1, 2002 to Nov. 1. 2004, 47 adult patients with Acinetobacter nosocomial pneumonia in Chuncheon Sacred Heart Hospital were recruited and analyzed retrospectively. MDR-AB was defined as showing in vitro resistance to all commercially available antibiotics against A. baumannii. Results: There were 47 patients with Acinetobacter nosocomial pneumonia. MDR-AB and non MDR-AB was the cause of the pneumonia in 17 and 30 patients, respectively. Mean age of the former was $69{\pm}11$ years old and the latter was $70{\pm}13$ years old. The mean APCHE II score, ICU days and mortality were not different between the two groups ($16.1{\pm}5.4$ vs. $14.9{\pm}4.8$, P=0.43, $25.1{\pm}13.6$ vs. $39.1{\pm}31.0$, P=0.2, 58.8% vs. 40%, P=0.21). Conclusion: There are no significant differences in mortality and morbidity between MDR and non-MDR Acinetobacter baumannii. The mortality of the two groups is surprisingly high, therefore proper infection control practices are essential.

연구 배경: A. baumannii는 전 세계적으로 중요한 병원 내 병원균으로 부각되고 있고 이들 균에 의한 감염 또한 빠르게 증가하고 있다. 이들 감염에 연관된 사망률(균혈증:52%, 폐렴:23-73%)은 매우 높고 다제 내성은 비교적 흔하게 발생하고 있는 실정이다. 그러므로 다제 내성 A. baumannii 감염에 대한 효과적인 치료를 위해서 이들의 임상 특징과 결과를 분석하고 이해하는 것이 필요하다. 이에 본 연구는 A. baumannii 병원내 폐렴 중 다제 내성군과 약제 감수성군 간의 임상적 특징, 사망률, 이환율을 비교하였다. 방 법: 2002년 1월 1일부터 2004년 11월 1일까지 춘천성심병원에 입원했던 환자 중 Acinetobacter 병원 내 폐렴으로 판단되는 47명의 환자를 연구 대상으로 하였고 이들의 의무기록을 후향적으로 분석하였다. 본 연구에서는 다제 내성 A. baumannii를 실험 환경에서 A. baumannii에 효과적이며 상업적으로 이용할 수 있는 모든 항생제에 내성을 보이는 것으로 정의하였다. 결 과: 47명의 A. baumannii 병원내 폐렴 환자 중 17명이 다제 내성군, 30명이 약제 감수성군으로 분류되었다. 이들의 평균 연령은 다제 내성군은 $69{\pm}11$세, 약제 감수성군 $70{\pm}13$세이었고 APACHE II 점수, 중환자실 입원기간, 사망률에 있어서 두 군간에 유의한 차이는 없었다($16.1{\pm}5.4$ vs $14.9{\pm}4.8$, P=0.43, $25.1{\pm}13.6$ vs $39.1{\pm}31.0$, P=0.2, 58.8% vs 40%, P=0.21). 결 론: Acinetobacter baumannii 다제 내성군과 약제 감수성군 간의 사망률과 임상적 특징 사이에서 유의한 차이는 보이지 않았다. 그러나 양군 모두 사망률과 이환율은 높게 나타나 A. baumannii 감염의 효과적인 감시 및 조절이 지속적으로 필요하겠다.

Keywords

References

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