Efficacy of Oral Furosemide Test for Primary Aldosteronism Diagnosis

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art_FREITAS_Efficacy_of_Oral_Furosemide_Test_for_Primary_Aldosteronism_2023.PDF (1.82 MB)
Citações na Scopus
1
Tipo de produção
article
Data de publicação
2023
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
ENDOCRINE SOC
Autores
Citação
JOURNAL OF THE ENDOCRINE SOCIETY, v.8, n.1, article ID bvad147, 10p, 2023
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Context: Confirmatory tests represent a fundamental step in primary aldosteronism (PA) diagnosis, but they are laborious and often require a hospital environment due to the risks involved.Objective: To evaluate the efficacy of oral furosemide as a new confirmatory test for PA diagnosis.Methods: We prospectively evaluated the diagnostic performance of 80 mg of oral furosemide in 64 patients with PA and 22 with primary hypertension (controls). Direct renin concentration (DRC) was measured before, and 2 hours and 3 hours after the oral furosemide. In addition, the oral furosemide test was compared with 2 other confirmatory tests: the furosemide upright test (FUT) and saline infusion test (SIT) or captopril challenge test (CCT) in all patients with PA.Results: The cut-off of 7.6 mu U/mL for DRC at 2 hours after oral furosemide had a sensitivity of 92%, specificity of 82%, and accuracy of 90% for PA diagnosis. In 5 out of 6 controls with low-renin hypertension, which might represent a PA spectrum, renin remained suppressed. Excluding these 6 controls with low-renin hypertension, the DRC cut-off of 10 mu U/mL at 2 hours after oral furosemide had a sensitivity of 95.3%, specificity of 93.7% and accuracy of 95% for PA diagnosis. DRC after 3 hours of oral furosemide did not improve diagnostic performance. Using the cut-off of 10 mu U/mL, the oral furosemide test and the FUT were concordant in 62 out of 64 (97%) patients with PA. Only 4 out of 64 cases with PA (6.4%) ended the oral furosemide test with potassium <3.5 mEq/L. Hypotension was not evidenced in any patient with PA during the test.Conclusion: The oral furosemide test was safe, well-tolerated and represents an effective strategy for PA investigation.
Palavras-chave
primary aldosteronism, diagnosis, furosemide, confirmatory test
URI
https://observatorio.fm.usp.br/handle/OPI/57880
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MCP
Artigos e Materiais de Revistas Científicas - FM/MCM
Artigos e Materiais de Revistas Científicas - HC/ICESP
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - HC/InCor
Artigos e Materiais de Revistas Científicas - LIM/42
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