radiography method called X-ray examination, when a picture of the object is prepared on a solid support.Kidney X-ray contrast agent in another is called renal excretory urography.
This diagnosis allows to study in detail the structure of the kidney.At the same time the pictures are clearer in comparison with plain radiography.This method is characterized in that its organization particular patient intravenously administered contrast agent.
The negative side of this diagnosis is the possibility of an allergic reaction to the contrast agent.It is important to see to it that the doctor found the opportunities and risks of hypersensitivity reactions.If such reactions are not expected before the introduction of the substance is required sample - 0.1 ml injected under the skin in one of the forearms, and saline - in the other arm.
The main indications for which carried out a study of the kidneys with contrast agent are:
- systematic infections of the urinary system.
- signs of colic.
- presence of blood in urine.
- Symptoms of kidney stones.
- Identification of the patient after surgery.
- With the development of symptoms of the presence of stones in the ureter, bladder stones or symptoms of kidney stones in order to identify their exact location.
Preparation for the examination
primarily specialist should explain to the patient the need for the organization of the survey, to talk about when and who will conduct it.
For eight hours before the diagnosis will need to give up eating and the consumption of a large volume of liquid.Three days before the survey from the diet excludes foods that increase flatulence.If necessary, appointed by administration of activated charcoal, and enema.
Organized blood examination, it turns out, what medications the patient takes.Also, the patient or his family is taken consent in writing to carry out the diagnosis.
physician should establish the presence of allergy to contrast dye is used, especially in iodine.If an allergic reaction is absent, the control sample is produced.The patient must take off all jewelry and other metal items.Empty the bladder and put on a gown.The doctor advance warning of the possibility of existence of a burning sensation, nausea, redness of the skin on the face during the administration of contrast medium.Before use, the patient is given a drink sedative or analgesic drugs.
Originally organized overview X-ray examination, and then survey with the introduction of a contrast agent.What follows is a series of shots over an equal amount of time and certainly one shot in the standing position.
Implementation and results of the survey
survey takes about 45 minutes, and the specific time depends on the personal conduct of indicators, such as the presence of stones in the ureter or kidney, their size, place of localization, etc.
specialist should always pay your attention to the quality of the images, as the filling substance introduced into the body of the various areas of the upper urinary tract and bladder.
Depending on the information received in the pictures the doctor decides whether to conduct further research.
If on one hand the upper part of the urinary tract clearly filled contrast agent, on the other hand, this substance is not available or there is only shadow injected contrast medium, the shadow extended cups that require repeated carrying out diagnosis after 50 - 60 minutes, and then through the one -two hours.In some situations, only pictures later enable to correctly diagnose pathology and identify functional renal opportunities.
This study is considered reliable diagnosis of a physiological manner.Obtained by this method images show morphological and functional condition of the body at any stage of the disease, but also provide a large number of valuable diagnostic information.The correct description of the images require a specialist contemporary views on the physiology of the human urinary system.
absolutely contraindicated organization X-ray contrast medium with the introduction of the following groups of people:
- patients with hypersensitivity reactions to contrast agents, particularly for people with intolerance to iodine.
- pregnant women.
- Patients with elevated bleeding and poor blood clotting.
- People suffering from kidney failure.
- In some renal pathologies.