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논문 기본 정보

자료유형
학술저널
저자정보
김정희 (서울대학교병원) 박경선 (서울대학교) 홍아람 (서울대학교병원) 신찬수 (서울대학교) 김성연 (서울대학교) 김상완 (서울대학교)
저널정보
대한내분비학회 Endocrinology and Metabolism Endocrinology and Metabolism Vol.31 No.2
발행연도
2016.1
수록면
277 - 283 (7page)

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Background: Diagnosis of primary aldosteronism (PA) begins with aldosterone-to-renin ratio (ARR) measurement followed byconfirmative tests. However, the ARR has high false positive rates which led to unnecessary confirmatory tests. Captopril challengetest (CCT) has been used as one of confirmatory tests, but the accuracy of it in the diagnosis of PA is still controversial. Weaimed to examine the clinical efficacy of CCT as a post-screening test in PA. Methods: In a prospective study, we enrolled subjects with suspected PA who had hypertension and ARR >20 (ng/dL)/(ng/mL/hr). Sixty-four patients who underwent both the saline infusion test and the CCT were included. Results: The diagnostic performance of plasma aldosterone concentration (PAC) post-CCT was greater than that of ARR post-CCT and ARR pre-CCT in PA (area under the curve=0.956, 0.797, and 0.748, respectively; P=0.001). A cut-off value of 13 ng/dL showed the highest diagnostic odds ratio considering PAC post-CCT at 60 and 90 minutes. A PAC post-CCT of 19 ng/dL hada specificity of 100%, which can be used as a cut-off value for the confirmative test. Determining the diagnostic performance ofPAC post-CCT at 90 minutes was sufficient for PA diagnosis. Subjects with PAC post-CCT at 90 minutes <13 ng/dL are lesslikely to have PA, and those with PAC post-CCT at 90 minutes ≥13 but <19 ng/dL should undergo secondary confirmatory tests. Conclusion: The CCT test may be a reliable post-screening test to avoid the hospitalization in the setting of falsely elevated ARRscreening tests.

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