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Jornal de Pediatria

Print version ISSN 0021-7557On-line version ISSN 1678-4782


CASTRO, Flávia A.A. de; FERNANDES, Maria I.M.; MONTENEGRO JUNIOR, Renan M.  and  FOSS, Milton C.. Study of the frequency of diabetes mellitus and glucose intolerance in patients with cystic fibrosis. J. Pediatr. (Rio J.) [online]. 2001, vol.77, n.4, pp.321-326. ISSN 0021-7557.

ABSTRACT OBJECTIVE: To evaluate the frequency of diabetes mellitus and glucose intolerance in patients with cystic fibrosis treated at the Pediatric Gastroenterology Service of HC-FMRP-USP. METHODS: A cross-sectional analytical study was conducted on a group of 25 patients with mucoviscidosis who were followed up at HC-FMRP-USP. Oral glucose tolerance tests (OGTT) were performed, with simultaneous determination of glycemia and insulinemia. Areas under the curve were obtained for glycemia (G) and insulinemia (I) and the I/G ratio was calculated and correlated with the duration of clinical manifestation and pancreatic exocrine function. RESULTS: Five patients presented alterations: one was diabetic and four had glucose intolerance and/or hyperinsulinemia. There was a direct correlation between the area under the curve for insulinemia and the duration of mucoviscidosis. A significant inverse correlation was also observed between the area under the curve for insulinemia and I/G ratio, and number of enzyme capsules/kg/day. CONCLUSIONS: The frequency of alterations in glucose homeostasis observed in patients with mucoviscidosis was higher than in the population at large (20% of the total sample and 33% of the group of patients with glycemia and insulinemia on OGTT). Therefore, it is important that glucose tolerance tests be performed systematically in patients with mucoviscidosis so that metabolic abnormalities can be early detected, and proper treatment can be initiated.

Keywords : diabetes mellitus; mucoviscidosis; cysctic fibrosis; glucose intolerance.

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