Duodenostaza can develop in connection with disorders caused by a mechanical obstacle, and as delays in the duodenum in a number of disorders of the stomach, biliary system, pancreas, and so on (Fig. 98), on the basis of disorders of vegetative innervation of the duodenum. C. S. Leviticus (1934) identified four types of functional changes in the duodenum: dyskinesia, atony, stasis, functional
obstruction. For all of them is that the radiological examination there is a delay of promotion, accompanied by prolonged stagnation contrast medium with a significant expansion of clearance for the majority of observations. It can be stasis duodenal bulb, stasis at various levels in connection with spastic phenomena in the field of functional sphincter of Oxner, Kapandji, in the lower horizontal part. Along with hypotonic the stasis can meet and hypertensive stasis, not accompanied by a pronounced expansion, and sometimes there are even some narrowing.

Fig. 98. Duodenostasis in the lower knee duodenum (x-ray).

Total hypotonic or atopic stasis is accompanied by a significant expansion of the duodenum with long-term (2-5 hours) delays in it a contrast agent. There are also partial hypotonic stasis in the lower horizontal part of the duodenum with a significant expansion of its ground clearance and a long, is also determined for hours, delays contrast agent.
Currently spreading duodenography able artificial hypotension, first proposed Liotta in 1953 (Fig. 99). This method is based on a significant reduction in the tone and the creation of artificial stasis duodenal ulcers with some pharmacological substances ganglioblokirtee series. The simplest and most affordable way to create artificial hypotension duodenum is a modification, developed by L. I. ne Dobychina (1964), consisting in a subcutaneous injection 1 ml of 0.1% solution of atropine and injections into the duodenum for anaesthesia mucous membrane 20 ml of 2% solution novokaina through duodenal probe. After 15 minutes, without taking the probe through it enter barium suspension and produce x-rays in a tight filling, and then a suspension is sucked away by a syringe and injected air to get pneumorrhagia.

Fig. 99. Duodenography able artificial hypotension. Newmerella.
Explanation in the text.

Duodenography able artificial hypotension promotes the detection of pathological changes by pancreas tumors and chronic pancreatitis. While on the internal contour of the duodenum is possible to detect changes of concernenti caused by indentations caused by (a double line, deformation mucous membrane), the infiltration of the walls (the lack of elasticity them, filling defects, changes in topography mucosa), and so on