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The relation of impaired vitamin A and E tolerance to fat absorption in biliary diversion.

Eleven patients have been studied after cholecystectomy with exploration of the common bile duct (CBD) and insertion of a T tube for free biliary drainage. Prior to clamping the T tube no significant rise was seen above fasting serum vitamin A and E, or serum triglyceride levels after 6 of the patients had been given these substances in a liquid test meal. In addition no rise in fasting vitamin E levels was seen after 3 subjects had been loaded for 4 days with 0.5 g DL alpha-tocopherol acetate/day. Faecal fat collections performed on 9 subjects indicated that over 70% of the ingested fat was absorbed. All these findings returned to normal when the T tube was clamped and the intraluminal flow of bile re-established. We conclude that deficiency of bile may allow the absorption of fat in the absence of fat soluble vitamins.