• S C Miranda, M L Ribeiro, E Ferriolli, and J S Marchini.
• Division of Clinical Nutrition, Department of Internal Medicine, Hospital das Clínicas, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil.
• Sao Paulo Med J. 2000 Nov 9; 118 (6): 169172169-72.

ContextMagnesium support to small bowel resection patients.ObjectiveIncidence and treatment of hypomagnesemia in patients with extensive small bowel resection.DesignRetrospective study.SettingMetabolic Unit of the University Hospital Medical School of Ribeirão Preto, University of São Paulo, Brazil.PatientsFifteen patients with extensive small bowel resection who developed short bowel syndrome.Main MeasurementsSerum magnesium control of patients with bowel resection. Replacement of magnesium when low values were found.ResultsInitial serum magnesium values were obtained 21 to 180 days after surgery. Hypomagnesemia [serum magnesium below 1.5 mEq/l (SD 0.43)] was detected in 40% of the patients [1,19 mEq/l (SD 0.22)]. During the follow-up period, 66% of the patients presented at least two values below reference (1.50 mEq/l). 40% increased their serum values after magnesium therapy.ConclusionMetabolic control of serum magnesium should be followed up after extensive small bowel resection. Hypomagnesemia may be found and should be controlled.

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