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Water absorption from human jejunum in the presence of systemic bacterial infection.

Systemic bacterial infections significantly reduce the jejunal absorption rate of glucose when that sugar is presented at a concentration comparable to that used in oral rehydration fluids. In order to decide whether such infections exert an effect on water transfer also, net water absorption rate from normal saline was determined, using a jejunal perfusion technique, in 6 patients with systemic bacterial infections and in 6 controls; the difference in the mean rate was not significant. In similar groups, previously studied, systemic infections had no significant effect on the kinetics of net water absorption from iso-osmotic glucose (56, 139 and 278 mmol 1_1), glycine (100 mmol l-1) or glycylglycine (50 mmol I-1) solutions; slopes of linear regressions for net water and solute absorption rates were not significantly different from controls. Net water absorption rates from iso-osmotic glucose (200 mmol l^1) and glycine (100 mmol 1~>) solutions were compared in Africans (who have a high incidence of sub-clinical infection), Arabs and Europeans; slopes of linear regressions for net water and solute absorption rates were similar in the three groups. Systemic bacterial infections do not significantly affect water absorption, and do not therefore affect oral re-hydration regimes which are now widely used in tropical countries; however, because glucose absorption is depressed by such infections there is some diminution in the overall rate of water absorption.