alexa Superior mesenteric blood flow during digestion in man.

Author(s): Norryd C, Denker H, Lunderquist A, Olin T, Tyln U

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Abstract The superior mesenteric blood flow was studied with a dye-dilution technique after catheterization of the superior mesenteric artery and vein during the digestive phase after intake of a mixed meal (700 kcal). The material consisted of 5 patients. Within 5 minutes of the end of the meal the superior mesenteric blood flow, on the average, was increased by 60\%. The largest increase was 113\% and was noted one hour after the meal. The vascular resistance of the superior mesenteric vessles had by then fallen to a mean value of 55\% below the prefeed value. The portal venous pressure was only slightly increased. The cardiac output was increased in 2 but slightly decreased in the remaining 3 patients. The pulse rate, blood pressure and haemoglobin concentration were largely unchanged. The ratio of the superior mesenteric blood flow to the cardiac output increased from 12 to 22\% during the digestive period. The findings suggest the occurrence of a redistribution of blood after a meal with an increase in the superior mesenteric blood flow.
This article was published in Acta Chir Scand and referenced in

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