현명내과

의학적 검토: 정지인 내과 전문의 / 류마티스내과 분과전임의 (서울대학교병원 전임의 과정 수료 (2021-2024))

영남대학교 의과대학 내과학 석박사 수료

최종 업데이트: 2026-04-24

개요

요로감염(UTI, ICD-10: N39.0)은 요도, 방광, 신장 등 요로계의 세균 감염으로, 여성에서 평생 유병률이 50-60%에 달하는 매우 흔한 감염질환입니다. E. coli가 원인의 75-90%를 차지합니다.

원인과 위험인자

분류세부 인자기전/특징
여성 해부학적 요인짧은 요도, 질과의 근접여성이 남성보다 30배 호발
성행위기계적 세균 유입'허니문 방광염'
폐경에스트로겐 감소 → 질 pH 상승재발성 UTI 위험 증가
요로 폐색전립선비대, 결석, 카테터복잡성 UTI 원인
당뇨면역저하, 신경인성 방광UTI 빈도 및 합병증 증가

증상

진단

소변검사

요시험지(dipstick): 백혈구 에스테라제(+), 아질산염(+). 현미경: 농뇨(WBC ≥10/HPF).

소변배양

반복/복잡성 UTI에서 원인균+항생제 감수성 확인. ≥10^5 CFU/mL이 전통적 기준이나 증상 동반 시 10^3도 유의.

영상검사

반복 UTI, 남성 UTI, 복잡성 UTI에서 초음파/CT로 구조적 이상 배제.

치료

단순 방광염

1차: nitrofurantoin 5일, TMP-SMX 3일(내성률 확인 후), fosfomycin 단회. 퀴놀론은 단순 방광염에 비권고(내성 보존).

급성 신우신염

경증: 경구 퀴놀론 7일. 중등-중증: 입원 IV 항생제(3세대 세팔로스포린 ± aminoglycoside).

재발 예방

폐경 여성: 질 에스트로겐. 크랜베리 추출물: 일부 근거. 항생제 예방: 연 3회 이상 재발 시 저용량 장기 투여.

PubMed 근거 요약

IDSA/ESCMID 2011 가이드라인(Gupta et al., Clin Infect Dis)은 단순 방광염에서 nitrofurantoin과 TMP-SMX를 1차 항생제로, 퀴놀론은 대안으로 권고합니다. Hooton 등(2012, NEJM 종설)은 재발성 UTI의 예방 전략을 종합했습니다.

현명신경외과 류마티스내과의 접근

현명신경외과 류마티스내과에서는 요로감염의 정확한 진단(소변검사+배양), 가이드라인 기반 항생제 치료, 재발 예방 상담을 제공합니다. 면역억제제 사용 류마티스 환자의 감염 관리에 주의를 기울입니다.

자주 묻는 질문

Q: 요로감염이 자주 재발하는데 어떻게 하나요?

A: 연 3회 이상 재발 시 예방적 항생제, 폐경 후 여성은 질내 에스트로겐, 수분 섭취 증가, 배뇨 후 위생관리를 병행합니다. 구조적 이상이 있는지 확인도 필요합니다.

Q: 크랜베리가 요로감염 예방에 효과 있나요?

A: 일부 연구에서 크랜베리 제품이 재발을 줄일 수 있다는 보고가 있지만, 효과가 일관적이지 않아 단독 예방법으로는 권고하지 않습니다.

Q: 요로감염은 왜 여성에게 더 흔한가요?

A: 여성의 요도가 짧고(약 4cm) 해부학적으로 질·항문과 가까워 세균 침입이 용이합니다. 성 활동, 임신, 폐경 후 에스트로겐 감소가 위험인자입니다.

Q: 반복되는 방광염을 예방하는 방법이 있나요?

A: 충분한 수분 섭취, 배뇨 후 앞에서 뒤로 닦기, 성관계 후 배뇨가 기본입니다. 연 3회 이상 재발 시 저용량 예방적 항생제나 크랜베리 보충제를 고려합니다.

참고 문헌

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함께 읽어보기

본 콘텐츠는 의학 논문과 임상 가이드라인을 기반으로 작성되었으며, 개인의 의료 상황에 따라 다를 수 있습니다. 정확한 진단과 치료는 전문의 상담을 통해 결정하시기 바랍니다.