A Reliable Assistant in Urological Surgery — Ureteral Stent

Why is a stent placed after stone surgery?

A ureteral stent (commonly known as a“Double J stent”) acts like a soft internal scaffold. Its main functions include:

Preventing postoperative edema: After surgery, the ureter may swell due to irritation. The stent helps keep the urinary tract open and prevents obstruction.

Promoting healing: It supports the ureteral wall, reducing the risk of urine leakage and postoperative stricture.

Facilitating stone fragment passage: If small fragments remain after the procedure, the stent helps guide them to pass naturally with urine.

Reducing infection risk: By lowering renal pelvic pressure, it helps prevent urine reflux and reduces the risk of infection spread.

A Double J stent (also known as a ureteral stent) is a medical device commonly used in urological procedures. It is mainly used to support the ureter, ensure urine drainage, and assist in healing.

Below are some common surgical procedures and medical conditions where a Double J stent is required:

1. Urinary Stone Procedures

Ureteroscopy with laser lithotripsy (URS):

A Double J stent is placed after the procedure to prevent obstruction caused by ureteral edema or stricture.

Percutaneous nephrolithotomy (PCNL):

Due to the relatively invasive nature of the procedure, a stent is usually inserted to facilitate kidney drainage and prevent complications such as stricture or urine leakage.

After extracorporeal shock wave lithotripsy (ESWL):

In cases of large stones or ureteral inflammation, a temporary stent may be required to ensure proper urine flow.

2. Ureteral Stricture or Obstruction

When ureteral narrowing occurs due to tumors, inflammation, or external compression (such as retroperitoneal fibrosis), a Double J stent helps maintain proper urine flow.

3. Renal Pelvis or Ureteral Reconstructive Surgery

Pyeloplasty (e.g., UPJO surgery):

After correcting ureteropelvic junction obstruction, a Double J stent is used to support the anastomosis and promote healing.

4. Urological Tumor Surgery

After removal of ureteral or bladder tumors, a Double J stent may be placed to protect the ureter and ensure adequate drainage.

5. Other Conditions

Pregnancy with hydronephrosis:

In severe cases, a temporary Double J stent may be inserted to relieve symptoms.

Prophylactic placement before pelvic surgery:

For example, prior to gynecological tumor surgery, a stent may be placed to help identify and protect the ureter, reducing the risk of accidental injury during the procedure.

Functions of a Double J Stent

1. Facilitates urine drainage and relieves hydronephrosis.
2. Prevents ureteral stricture or adhesion.
3. Promotes postoperative healing of the surgical site.

Precautions

1. It is usually left in place for 2–4 weeks (depending on the patient’s condition).
2. It may cause mild hematuria, urinary frequency, or lower back pain, which are common and generally temporary.
3. Regular follow-up is required to ensure timely removal and to avoid complications such as infection or stone formation due to prolonged retention.

Disclaimer

1. Some of the content in this article comes from online sources. If there is any infringement, please contact us for removal.
2. The medical information provided here is for reference only and should not be used as a basis for clinical diagnosis or treatment.