How is kidney ultrasound with contrast agent performed?
Mar 07, 2018
Urology and ultrasound of the kidneys are highly effective and affordable research methods in urology. This method of diagnosis is sometimes called a kidney ultrasound with a contrast agent.
This is important! Most often this study is prescribed in the presence of signs of renal colic and urolithiasis, pa also with blood in the urine.
Urography is one of the methods of X-ray examination of the kidneys, which allows you to obtain accurate data and play a decisive role in the diagnosis of many pathologies.
This study can be prescribed if available:
- for systemic infectious diseases of the urinary system;
- signs of renal colic;
- of blood in the urine;
- signs of urolithiasis;
- as well as to identify complications after operations.
Information on the varieties of the
study It is customary to distinguish between these types of research:
- review urography;
- excretory urography;
- infusion urography.
Under the renal urography of the kidneys, it is necessary to understand the ordinary X-ray image of internal organs that are located in the kidney area.
Excretory urography is an X-ray examination using contrast agents. With the help of this method, it is possible to study in more detail the structure of the kidneys.
This is important! Concentrated 60-80% iodine-containing solutions, for example, sergozin, urografine, urotrast, etc., can be used as a contrast agent X-ray. These preparations are designed for slow intravenous( jet) injection. The amount of contrast is calculated according to the weight of the patient.
With excretory urograms it is possible to estimate:
- Kidney contours;
- functional state of the kidneys;
- shape and contours of the bladder, ureters.
One of the types of excretory urography is infusion urography of the kidneys. Its essence lies in the fact that the patient is administered a contrast medium with the help of a dropper and in larger volumes, in comparison with the usual excretory urography. This allows you to get an even more detailed picture of the structure of the kidneys and find out all the features.
Before conducting the study, the patient must abandon those products that promote gas generation within 3 days. Immediately before urography, one should refrain from food for 8 hours. It is forbidden to drink plenty of liquid.
This is important! Before starting the study, the treating specialist should take a test for allergy to contrast agents.
Immediately before the urography, the patient needs to remove all metal ornaments and objects, and the bladder should be previously emptied. In some cases, a specialist may prescribe sedatives or analgesics.
In most cases it takes up to 45 minutes and is directly dependent on individual factors, for example, the presence of kidney stones, their location, size.
The main contraindications
If we talk about contraindications to the conduct of urography, then they can include:
- Increased sensitivity to iodine-containing contrast agents;
- The presence of acute glomerulonephritis;
- Renal failure( acute and chronic);
- Drug use of glucofag in patients with diabetes mellitus;
- Reduced blood clotting;
Complications after urography with contrast agent
Complications after this diagnostic measure, in most cases depend on the number of X-ray examinations performed for a long period of time.
This is important! A special place is occupied by nephrotoxic effects and allergic reactions. A huge number of modern X-ray contrast agents in their composition contain iodine atoms, and intravenous urography is contraindicated in cases of allergy to iodine.
The risk group includes patients with bronchial asthma, allergic reactions to contrast agents and other severe allergic reactions.Like the article? Share with friends and acquaintances: