Abstract
To study the effect subtotal gastrectomies have on exocrine pancreatic function, 12 dogs were prepared with gastric and duodenal cannulas using a modified technique of Thomas. In our study protocol, we collected pancreatic juice by selective ductal cannulation after having applied two types of stimulation [tryptophan intraduodenally together with secretin intravenously (i.v.) and cholecystokinin i.v. together with secretin i.v.]. Our results did not show a significant increase in pancreatic juice after performing the gastrectomies. In both cases the concentration of bicarbonate decreased significantly in contrast to that in the control group. After Billroth I anastomosis, however, a significant decrease in the first periods of stimulation in relation to the gastrojejunostomy was appreciated. In the case of proteins, a loss of the dose/effect relation in these parameters was seen only after Billroth II anastomosis.
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