Percutaneous Placement of J-J Catheter2017-07-03T10:45:08+08:00

What is Percutaneous Placement of J-J Catheter?

A J-J stent is a small plastic tube that can be passed from the bladder up into the kidney.

Effects of Percutaneous Placement of J-J Catheter

Placement of J-J would be able to relieve obstruction and enable urine flow.

Candidates for Percutaneous Placement of J-J Catheter

Ideal candidates are patients who are diagnosed with kidney stones.

Your Consultation

The doctor would need to get the patient’s clinical history, examination and imaging, usually in the form of X-rays or a CT scan.

The Percutaneous Placement of J-J Catheter Procedure

There are times when it is necessary to insert a hollow plastic tube into the urinary tract prior to lithotripsy. This tube is called a J-J stent. One end of the stent coils up in the kidney, and the other coils up in the urinary bladder. If the urologist at the Center inserts a J-J stent, the patient and the referring urologist will be informed of its placement. It is absolutely mandatory that this stent be removed by the referring urologist.


This procedure does not require any surgery so recovery is relatively quick and easy.


Prolonged JJ stent placement was associated with return of intrapelvic pressure to normal but persistent changes in both renal and ureteric motility and also calculus transit time.


What is a kidney stone?

Kidney (renal) stone is a mixture of salt or crystals and minerals can that come together and grow as stones in a solution (i.e. urine in this case).

What causes kidney stones?

There are no definite answers but it appears that there is a mix of genetic factors (the risk of stones tends to run in families) and environmental factors such as a hot climate or your dietary intake. Stones tend to occur in the 20-40’s age group and are three times as common in men as compared to women. Other factors include abnormalities of the urinary tract system, recurrent urinary tract infections and some metabolic disorders.

What is the treatment for kidney stones?

Treatment varies according to size and position of the stone within the urinary tract. The size of the stone can range from a small pinhead to the size of a walnut, completely filling the kidney collecting system. Smaller stones may pass spontaneously, however if the stone is too big, intervention may be necessary.

The actual treatment will depend on your clinical history, examination and imaging, usually in the form of X-rays or a CT scan. Nowadays, with the advent of advanced instruments and telescopes, the stone can usually be removed without making any incisions.

Other methods of treating stones include percutaneous nephrolithotomy (PCNL), which is a form of keyhole surgery, or dissolution therapy where the stone can be dissolved by changing the acidity of the urine. In some instances, lithotripsy can be used to shatter the stone using a focused, magnified, sound wave.

Your surgeon will discuss with you the best options for stone removal at your consultation.

What happens after a J-J stent is placed?

In situ JJ stents impair upper urinary tract motility and experimental calculus transit time and may delay passage of ureteric calculi or calculus fragments following extracorporeal shock wave lithotripsy.

What happens when a stent is left inside for a long time?

Stents that are allowed to remain in place for an extended period can become covered with calcium and require other surgical procedures to remove them. Sometimes the urologist inserting the stent will choose to leave a string on the stent. This makes it easier to remove at a later time by the referring urologist.