Revista Brasileira de Saúde Materno Infantil (Sep 2005)

Associação glicemia de jejum e fatores de risco como teste para rastreamento do diabete gestacional Fasting glycemia associated with risk factors as a screening test for gestational diabetes mellitus

  • Wilson Ayach,
  • Iracema de Mattos Paranhos Calderon,
  • Marilza Vieira Cunha Rudge,
  • Roberto Antonio Araújo Costa

DOI
https://doi.org/10.1590/S1519-38292005000300009
Journal volume & issue
Vol. 5, no. 3
pp. 329 – 335

Abstract

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OBJETIVOS: comparar dois testes de rastreamento do diabete gestacional. MÉTODOS: estudo prospectivo no qual foram avaliadas 356 gestantes, sem diagnóstico prévio do diabete melito, submetidas, de modo independente, a dois testes de rastreamento: associação glicemia de jejum e fator de risco (GJ+FR) e teste oral simplificado de tolerância à glicose (TTG50g). A comparação entre os métodos foi realizada pelos índices de sensibilidade (S), especificidade (E) e valores preditivos positivo (VPP) e negativo (VPN), resultados falsos, positivos (FP) e negativos (FN) e pela diferença dos resultados observados e esperados, avaliada pelo teste do Qui-quadrado (pOBJECTIVES: compare two gestational diabetes tests. METHODS: a prospective study in which 356 pregnant women, with no previous diabetes mellitus diagnoses independently submitted to two tests; fasting glycemia and risk factor association (FG+RF) and the simplified oral test for glucose tolerance (TTG50g). Methods of comparison were performed by sensitivity (S) and (ES) specificity indexes, positive predictive values (PPV) and negative predictive values (NPV), false results, false positive (FP) and false negative (FN) and by the difference of the results determined and expected, evaluated through the Chi-Square Test (p<0.05). RESULTS: FG+RF association determined diagnostic confirmation in a larger number of patients (187; 52.5%) than TTG50g (49; 13.8%). This difference was significant (p<0.05). The FG+RF association indicated a sensitivity of 83.7% and negative predictive value (NPV) of 95.3% as compared to TTG50g. CONCLUSIONS: the high sensitivity rates and NPV from the association of FG+RF as compared to TTG50g and its simplicity, practicality, low cost and easy replication are positive qualities for gestational diabetes testing indication.

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