신생아 중환자실에서 포도알균 감염에 대한 임상적 고찰과 위험 요인 조사

Clinical characteristics and risk factors for staphylococcal infections in neonatal intensive care unit

  • 정민국 (한일병원 소아과) ;
  • 최정호 (한일병원 소아과) ;
  • 장진근 (한일병원 소아과) ;
  • 정성훈 (경희대학교 의과대학 소아과학교실) ;
  • 배종우 (경희대학교 의과대학 소아과학교실) ;
  • 차성호 (경희대학교 의과대학 소아과학교실)
  • Chung, Min Kook (Department of Pediatrics, Hanil General Hospital) ;
  • Choi, Jeong Ho (Department of Pediatrics, Hanil General Hospital) ;
  • Chang, Jin Keun (Department of Pediatrics, Hanil General Hospital) ;
  • Chung, Sung Hoon (Department of Pediatrics, College of Medicine, Kyunghee University) ;
  • Bae, Chong Woo (Department of Pediatrics, College of Medicine, Kyunghee University) ;
  • Cha, Sung Ho (Department of Pediatrics, College of Medicine, Kyunghee University)
  • 투고 : 2006.07.27
  • 심사 : 2006.09.12
  • 발행 : 2006.12.15

초록

목 적 : 신생아 중환자실에서 포도알균 감염이 증가하고 있어서 감염시 사망률과 유병율이 높기 때문에 신생아 중환자실에서 포도알균 감염의 임상적인 특징과 위험인자에 대하여 조사하였고 최근 늘어가고 있는 Methicilline 저항성 포도알균과 관련하여 항생제에 대한 감수성을 조사하였다. 방 법 : 2000년 1월부터 2004년 12월까지 한일병원과 경희의 대부속병원 신생아 중환자실에 입원한 세균 배양 검사상 포도알균에 양성을 보인 환아 240명을 대상으로 하여 의무 기록을 후 향적으로 조사하였다. 포도알균을 MRSA, MSSA, S.epidermidis, S.epidermidis 외 CNS로 나누어 감염에 대한 임상적 특징과 여러요인과 발생빈도에 있어서의 연관성에 대한 조사를 시행하였다. 포도알균에 양성을 보인 240명의 환아중 MRSA는 88명, MSSA는 41명, S.epidermidis는 63명, S.epidermidis 외 CNS는 48명이었다. 결 과 : 5년동안 신생아실에 입원한 3,593명 중에 배양검사를 시행한 환아수는 7,481명이었으며 배양검사상 양성 환아수는 2000년도에 23명, 2001년도에 109명, 2002년도에 53명, 2003년도에 35명, 2004년도에 20명이었다. 포도알균 감염의 위험요인은 제태연령 37주 미만, 5분 아프가 점수가 7점 미만, 입원후 총정맥영양 시행, 입원후 인공호흡기의 사용, 제대정맥관 또는 제대동맥관 삽입, 입원후 비강 또는 구강용 영양튜브의 사용 등이었다. 항생제 감수성에 있어서는 모두 vancomycin에 감수성이 100%였으며 teicoplanin, trimethoprim-sulfamethoxazole, chloramphenicol, clindamycin에 감수성이 높았으며 gentamycin과 erythromycin에는 감수성이 낮았다. 결 론 : 포도알균 감염의 빈도를 줄이기 위해서는 철저한 산전 관리 등을 통해 미숙아 출생을 낮춰야 하며 신생아실에 입원하는 환아에게 총정맥영양의 시행, 인공호흡기 사용, 중심정맥도관의 삽입, 비강 또는 구강용 영양튜브의 사용을 최소한도로 해야 하겠으며 최근 신생아실에서 증가하고 있는 methicillin 저항성 포도알균에 대해서는 조기에 적절한 항생제를 사용하는 것이 MRSA 감염으로 인한 유병률과 사망률을 낮출수 있을 것으로 사료된다.

Purpose : The importance of staphylococcal infections in NICU has been emphasized in terms of increased resistant strains and increased incidence of morbidity and mortality. In this study, we inrestignted the clinical characteristics and risk factors for staphylococcal infections, and looked into sensitivity trends of antibiotics in the era of a high rate of methicillin-resistant staphylococcus aureus (MRSA) in our society. Methods : This study included 240 neonates with positive blood, urine and other sites cultures for staphylococci who were admitted to NICU of Hanil General Hospital and Kyunghee University Hospital from January 2000 to December 2004. The analyses included clinical characteristics of staphylococcal infections and the relationship of incidence rate among various factors, including invasive procedures. Results : For 5 years, 3,593 patients were hospitalized in the NICU and 7,481 specimens were cultured from blood, urine, and other sites. During the study period, staphylococci were isolated from 240 patients, of whom 88 patients had MRSA, 41 patients methcillin sensitive staphylococcus aureus (MSSA), 63 patients S. epidermidis, 48 patients coagulase-negative staphylococcus (CNS) except S. epidermidis infections. The risk factors associated with staphylococcal infections were less than 37 weeks of gestational age, less than 7 on a 5 minutes Apgar score, receiving TPN, applied mechanical ventilation, use of central venous catheters and other tubes. The sensitivity to vancomycin was 100 percent. A relatively high sensitivity against teicoplanin, trimethoprim-sulfamethoxazole, chloramphenicol, clindamycin and low sensitivity against gentamicin and erythromycin were shown. Conclusion : To reduce staphylococcal infections in NICU, we need to monitor and manage premature neonates from the beginning of the birth process and to avoid as many invasive procedures as possible in NICU. Considering MRSA, control of preceding factors and early use of appropriate antibiotics is expected to reduce the morbidity and mortality caused by MRSA infections.

키워드

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