. Roentgen interpretation; a manual for students and practitioners . Fig. 140.—Tracing of stomach, showing large saddle ulcer. the defect with change in position of the patient, peristalsis is notinterfered with, and they are constant on repeated examinations. Changes in Peristalsis.—Increase in the depth or speed of wavesmay be due to reflex or irritative causes or compensatory to adiseased pylorus. In the early stages of pyloric obstruction thewaves are deep and vigorous. They may bisect the stomach, giving STOMACH 165 it the appearance of a row of balls. The waves also start higher andmore
. Roentgen interpretation; a manual for students and practitioners . Fig. 140.—Tracing of stomach, showing large saddle ulcer. the defect with change in position of the patient, peristalsis is notinterfered with, and they are constant on repeated examinations. Changes in Peristalsis.—Increase in the depth or speed of wavesmay be due to reflex or irritative causes or compensatory to adiseased pylorus. In the early stages of pyloric obstruction thewaves are deep and vigorous. They may bisect the stomach, giving STOMACH 165 it the appearance of a row of balls. The waves also start higher andmore are visible at the same time. Peristaltic waves are lost inachylia, in the stage of decompensation of pyloric stenosis, in infil-. FiG. 141.—Tracing of stomach, showing ulcer at fundus and large ulcer of the lessercurvature invohing the pylorus. tration of the gastric wall, and in nausea, fear or faintness. Theyare irregular where they encounter areas of infiltration in the gastricwall or strands of adhesions and possibly in some functional dis-turbances. Peristalsis is reversed in carcinoma and tabes.
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