Contrast media is a chemical agent mainly used in blood vessels and body cavities, the damage of contrast media to the kidneys should be determined on a case-by-case basis. If the patient with normal renal function generally does not cause damage, if the patient with abnormal renal function can lead to contrast nephropathy forming acute renal failure.
Injectable contrast agent is generally hypertonic iodine-containing contrast agent, if patients with normal renal function can excrete the contrast agent out of the body, so patients with normal renal function generally will not cause damage to the kidneys.
However, patients with abnormal renal function may cause changes in renal blood flow, direct nephrotoxicity to the renal tubules, oxygen radical damage to the renal tubular epithelial cells, and induction of the body’s immune mechanism within 72 hours of the injection, leading to the occurrence of acute renal failure in the kidneys, and the formation of a small amount of proteinuria, hematuria, and other hazards.
As the contrast agent will have certain impact on the kidney function, if you need to use contrast agent, you should improve the relevant examination before and after the use according to the doctor’s advice to prevent damage to the kidney function.