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배양 양성 감염각막염의 임상양상 및 항생제감수성 변화: 10년간의국내 다기관 연구

Clinical Features and Antibiotic Susceptibility of Culture-proven Infectious Keratitis: a Multicenter 10-year Study

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목적: 최근 10년간 감염각막염 중 배양검사상 균주가 확인된 환자에 대하여 여러 임상양상에 대해 알아보고자 한다. 대상과 방법: 2008년 1월부터 2017년 12월까지 전국 8개 병원에서 균주가 확인된 감염각막염 956명의 의무기록을 후향적으로 분석하여, 선행요인, 원인균, 치료 방법, 예후 등을 분석하였다. 결과: 감염각막염의 가장 흔한 선행요인은 안외상(33.2%)이었다. 초기시력은 안전수지 이하가 449안(47.0%)이었다. 각막궤양은 중심부에서 흔하였고, 크기는 4 mm2 이하가 가장 많았다. 전방축농이 동반된 경우는 295안(30.9%)이었다. 배양된 균주는 총 1,039균으로 그람음성균 443균주(42.6%)가 가장 많았다. 가장 흔한 균은 그람음성균은 녹농균, 그람양성균은 피부포도알균, 진균은 푸사륨이었다. 수술 치료는 201안(21.0%)에서 양막이식술 66안, 안구내용제거술 44안 순이었다. 최종시력은 0.2보다 좋은 시력이 422안(44.1%)이었다. 그람양성균은 목시플록사신과 반코마이신에, 그람음성균은 레보플록사신과 세프타지딤에 높은 감수성을 보였지만 일부 장알균과 슈도모나스 등에서 저항성을 보였다. 결론: 국내 감염각막염은 안외상으로 흔히 발생하였고 그람음성균이 가장 많았다. 대표적인 원인균은 피부포도알균, 녹농균, 푸사륨이었다. 입원 후 약물 및 수술적 치료로 시력이 호전된 경우가 많았지만 일부 저항성을 보이는 세균과 진균에 대해서는 주의가 필요하다. 세균에서 불량한 임상결과에 이르는 위험인자는 초기시력 0.02 미만, 전방축농, 65세 이상 나이, 각막중심부 궤양이었고 진균은 70세 이상 나이였다.

Abstract

Purpose: To analyze the clinical manifestations of culture-proven infective keratitis patients over a recent 10-year period. Methods: We retrospectively reviewed the medical records of 956 cases of infective keratitis between January 2008 andDecember 2017 at eight tertiary hospitals. The study was performed to analyze the risk factors, causative microbial organisms,therapeutic outcomes, and prognosis. Results: The most common risk factor of keratitis was trauma (33.2%). Initial visual acuity (V/A) was finger count or less in449 eyes (47.0%). The common location of keratitis was central, and the size was 4 mm2 or less. Hypopyon was observed in 295eyes (30.9%). Of the 1,039 cultured isolates, 443 (42.6%) grew Gram-negative bacteria with the most common being Pseudomonas aeruginosa. The most prevalent Gram-positive bacteria was Staphylococcus epidermidis, and fungi was Fusarium species. Surgical treatments were performed in 201 eyes (21.0%), followed by amniotic membrane transplantation (66 eyes) andevisceration (44 eyes). Final V/A was 20/100 or more in 422 eyes (44.1%). Gram-positive organisms were highly susceptible tomoxifloxacin and vancomycin, and Gram-negative organisms were highly susceptible to levofloxacin and ceftazidime. Anincrease in resistance to these antibiotics was detected for Enterococcus and Pseudomonas. Conclusions: In South Korea, infective keratitis occurs frequently in eyes with trauma. Staphylococcus epidermidis, Pseudomonasaeruginosa, and Fusarium species are commonly identified etiologies of microbial keratitis. The appropriate administered medicaland surgical treatments of suspected infectious keratitis can lead to visual improvement with particular care taken to minimizeinfection related to resistant bacteria and fungal microbes as needed. An initial V/A of 0.02 or less, the presence of hypopyon,age of 65 years or more, and a central lesion were associated with poor clinical outcome of bacterial keratitis. Age of 70 years ormore was a significant risk factor for poor clinical outcome of fungal keratitis.

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