Why are ureteral stents used?

Ureteral stents are small, flexible tubes that are inserted into the ureter, the tube that carries urine from the kidney to the bladder. They are used for a variety of reasons, including:

* To relieve obstruction: Ureteral stents can be used to relieve obstruction of the ureter, which can be caused by a variety of factors, such as kidney stones, tumors, or scar tissue. By bypassing the obstruction, the stent allows urine to flow freely from the kidney to the bladder.

* To support the ureter: Ureteral stents can be used to support the ureter in cases where it is weakened or damaged. This can be due to a variety of factors, such as surgery, trauma, or radiation therapy. The stent helps to keep the ureter open and prevent it from collapsing.

* To facilitate surgery: Ureteral stents can be used to facilitate surgery on the kidney or ureter. The stent can help to protect the ureter from damage during surgery and also helps to provide drainage for urine.

Ureteral stents are typically inserted during a cystoscopy, a procedure in which a small camera is inserted into the bladder. The stent is then passed through the bladder and into the ureter. The procedure is usually done on an outpatient basis and takes about 30 minutes.

Ureteral stents can cause some discomfort, such as pain in the back, side, or abdomen. They can also cause urinary urgency, frequency, and incontinence. These symptoms usually go away within a few days or weeks.

Ureteral stents are typically left in place for a few weeks or months. The length of time that the stent is in place depends on the underlying condition being treated. When the stent is no longer needed, it is removed during a cystoscopy.