. The American journal of roentgenology, radium therapy and nuclear medicine . esult in proximal fecal retention. 4. An\ acquired local lack of resiliencein the gut wall as from an inflammatory orother pathological condition will lead torecoil and relative proximal stasis. A sclerosing duodenal ulcer even if it does notactually involve and result in fixed con-tracture of the pyloric sphincter is fre-quently associated with a slight ormoderate delay in gastric motility—a sixhour residue and a degree of gastricdilatation. This may be an expression offinal fatigue on the part of the stomachwalls
. The American journal of roentgenology, radium therapy and nuclear medicine . esult in proximal fecal retention. 4. An\ acquired local lack of resiliencein the gut wall as from an inflammatory orother pathological condition will lead torecoil and relative proximal stasis. A sclerosing duodenal ulcer even if it does notactually involve and result in fixed con-tracture of the pyloric sphincter is fre-quently associated with a slight ormoderate delay in gastric motility—a sixhour residue and a degree of gastricdilatation. This may be an expression offinal fatigue on the part of the stomachwalls from the ulcer resistance offered inthe cap, whose function would thus besuggested as that of a shock absorber forgastric peristaltic In such aduodenal ulcer the pylorus itself is oftenshown by the plate to be actually openand roentgenoscopically to be incompe-tent, divulsed by the increased intragastrictension instead of in spasm, usually con-sidered the causative factor in the delayedgastric emptying (Fig. 32). It may evenbe that the secondary indications, the. Fig. 30. Marked hypertonicity, spasm ol rectosigmoid apparatus and pelvic colon—according t an essential cause of constipation in colons of essentially a high degree ol tonus. indirect signs of non-obstructive duodenalulcer, can be accounted for on the basis of • The size and form of the duodenal cap indicates the extentto which 1: is subjected to pressure—plus its form and directionand the ■ tonus of that person. Where the pylori: ertical it will as a rulebelarge in heavj vithhigh h\ pi rtonic stomachs the cap is non-ri ti its down- ward direction favors non-retention through gravity. It willconsequently be small and not apparently greatly differentiated. A-Rav Evidence of Abdominal Small Intestinal States 21 I abnormal distal resistance. The hypeiper-istalsis as the direct response; the initialh\ permotilitj as the resultant of hyperperi-stalsis thus ex-cited plus the incompetenceof the pvlorus to
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