[Liverfunction and serum concentration of electrolytes in patients operated for morbid obesity (author's transl)].

50 patients with morbid obesity underwent a Jejuno-Ileostomy. The liver function was tested before operation and postoperatively up to 24 months. Simultaneously the concentration of potassium, natrium, calcium, magnesium and chloride was examined. The concentration of bilirubin did not show any important changes. Thymol turbidity was within the limit. 3 months after the operation an increase of the activity of SGPT and SGOT was noted, as well as the increase of BSP retention. 6 months after the operation a decrease of concentration of potassium and calcium in serum was observed. 3 patients developed tetany. 12 months after the operation no changes in the concentrations of ions in the blood serum have been noted and the tests of the liver showed an improved function compared with the pre-operative period.