What does increased urinary output following a cardiac catheterization indicate?

Increased urinary output following a cardiac catheterization is typically an expected effect of contrast dye used during the procedure. When the contrast dye is administered, it enhances the imaging of the blood vessels and heart structures. As the kidneys filter this dye out of the bloodstream, it results in increased urine production. This is a normal response as the body works to eliminate the contrast material and does not usually indicate any underlying kidney issues or other health concerns.

In contrast to other potential implications, such as kidney failure, excessive hydration, or a urinary tract infection, the increase in urine output is generally monitored and expected as part of the procedure's aftercare. It suggests that the kidneys are functioning properly and disposing of the contrast material as intended.