Cavography Nizhnyaya

Inferior cavography is the study of the veins of the abdominal cavity and retroperitoneal space using an x-ray contrast agent (cardiotensin). Assessing the passage and distribution of the contrast agent in the cavities allows us to determine the structure of the venous system and identify vascular pathologies. The study is indicated for suspected intestinal diseases accompanied by chronic mesadenitis, as well as for vascular lesions of the pelvis. Reverse non-contrast x-ray examination of the abdominal organs is used to assess their shape and position. The disadvantage of the method is insufficient differentiation of gases, limited use for intestinal obstruction, and a lower degree of information content.

It is preferable to perform inferior cavography in the X-ray operating room. The transrectal method of examination does not require special preparation and is simple; the patient should lie on his side on the couch, with his legs under the patient’s head, and the upper leg should be slightly raised to facilitate taking the picture. A catheter is inserted in the knee-wrist position, which protects the bladder from inadvertent urination, or the catheter can be inserted into the rectum after appropriate anesthesia. The doctor monitors the patient's condition; he may ask the patient to hold his breath after inserting the catheter.

Cardiotensin is injected slowly. After installing the catheter, a small amount of the substance is first injected to ensure the patency of the vessel along its entire length. To contrast veins with smaller proportions of contrast solution, simply wave your hand over the area of ​​the vessel. Contrasting is stopped by covering the current of the beam beam with the palm of your hand. The patient is held in the original position for up to 36 seconds, sometimes the examination is repeated after 90 seconds.