일차의료기관에서 세균성 인두염의 진단검사 비교 및 제언
Comparison and Recommendation of Diagnostic Tools for Bacterial Pharyngitis at Primary Care Clinics
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우리나라에서 매년 1천만명 이상이 인후염 혹은 편도선염을 주소로 1차 의료기관을 방문하고 있으며, 이 중 50% 이상이 항균제를 처방받고 있다. 항균제 오남용을 줄이기 위해서는 먼저 올바른 진단이 전제되어야 한다. 저자들은 세균성 인두염을 진단하기 위해 사용하는 세균배양, 신속항원검사 및 분자진단검사 3가지의 장단점을 비교하였다. 또한 국내외 세균성 인두염 진단 지침을 비교하였다. 세균배양은 표준검사로 사용되어 왔지만, 숙련도와 배양 시설이 필요하다. 또한 동정에 1-2일이 소요되므로, 이 기간 동안 정확한 항균제 처방이 어렵고 결과를 알기 위해 재방문이 필요하다. 반면 신속항원검사는 배양시설이 필요 없고, 검사소요시간이 5-10분으로 매우 짧으며, 민감도가 개선되었다. 최신 분자유전검사는 아직까지 임상적 자료가 불충분하다. 따라서 일차의료기관에서는 신속항원검사를 사용하여 세균성 인두염을 진단하고 항균제를 올바로 사용할 것을 제안한다.
Abstract
There are more than 10 million visits to primary care clinics annually due to pharyngitis or tonsillitis. The antibiotic prescription rate for these patients is more than 50%. An optimal diagnosis is necessary to avoid antibiotic misuse or overuse. Here, we compared the benefits and pitfalls of three currently available laboratory methods, such as throat culture, rapid antigen detection test (RADT), and molecular tests. We also reviewed the current American and Korean guidelines for bacterial pharyngitis. Although throat culture is regarded as a gold standard, it requires high technical expertise and culture facilities. In addition, the turn-around time (TAT) is 1 day-2 days causing possible inadequate prescription as well as the inconvenience of a second clinical visit to check results. The RADT does not require culture facilities and the TAT is noticeably short (5-10 min). The initial low sensitivity of the RADT has been improved these days. Though molecular tests are the most advanced, there remains a lack of clinical data. Therefore, we recommend judicious use of the RADT for diagnosing bacterial pharyngitis as well as effective antibiotic prescriptions at primary care clinics.
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