항생제 사용량 변화에 따른 그람음성균주의 항생제 내성률의 변화 양상

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김서희;유리나;이진아
Kim, Seohee;Yoo, Reenar;Lee, Jina

  • 투고 : 2015.07.12
  • 심사 : 2015.09.09
  • 발행 : 2015.12.25

초록

목적: 국내 소아 그람음성균혈증에서 항생제 내성변화 및 항생제 사용량과의 관계를 분석하였다. 방법: 최근 10년간 18세 이하 입원 환자의 혈액에서 분리된 그람음성균의 항생제 내성률 변화 및 항생제 사용량과의 관계를 분석하였다. 결과: 폐렴막대균, 대장균, 녹농균, 아시네토박터 바우마니의 분리율은 연간 혈액배양 1,000건당 각각 4.6례, 3.5례, 3.4례 및 2.2례였다. 폐렴막대균에서 광범위 세팔로스포린에 대한 내성변화는 없었으나 2010년부터 카바페넴 내성 폐렴막대균이 동정된 후 점차 빈도가 증가하였다. 대장균의 광범위 세팔로스포린 내성이 10%에서 50%로 아시네토박터 바우마니의 카바페넴 내성이 11%에서 71%로 크게 증가하였다(P for trend <0.01). 녹농균은 여러 항생제에 높은 내성을 보였으나 유의한 내성변화를 보이지 않았다. 대장균의 cefepime 내성과 cefepime 사용량 사이에 유의한 양의 상관관계를 보였다(r=0.900, P=0.037). 결론: 국내 소아에서 발생한 그람음성균 균혈증 분석시 카바페넴 및 광범위 세팔로스포린 내성이 증가하였고 일부에서 항생제 사용량과의 관련성을 확인하였다. 이는 원내 경험적 항생제 결정시 중요한 고려 사항이며 추후에도 지속적인 원내 항생제 사용량 및 내성률에 대한 감시가 필요하겠다.

키워드

Gram negative bacteria;Antibiotic resistance;Antibiotic consumption

참고문헌

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