Common Complications and Precautions After Ureteral Stent Placement

Ureteral Stent (Double-J Stent) Placement

Ureteral stent placement, also known as “Double-J stent” insertion, is a common procedure in urology. It is used to relieve urinary tract obstruction, promote ureteral healing, or prepare for subsequent treatments. Although this procedure is generally safe, some complications may still occur postoperatively. Understanding these potential issues and how to manage them can help patients cooperate with treatment and recover more effectively.

 Common Complications

1. Hematuria (Blood in Urine)
   Hematuria is one of the most common complications after ureteral stent placement. The stent may irritate or rub against the urinary tract mucosa, especially during physical activity, causing mucosal bleeding.

• Mild hematuria:Light pink or tea-colored urine, usually without clots; worsens after activity and improves with rest (no medical visit required).
• Moderate hematuria:Bright red urine with occasional fine blood strands, may be accompanied by mild flank pain (consult a doctor as needed).
• Severe hematuria:Dark red or brown urine, with visible clots, possibly causing difficulty urinating (requires immediate medical attention).

2. Urination Discomfort

• Symptoms:Frequency, urgency, or pain during urination.

About 80% of patients experience bladder irritation, especially noticeable at the end of urination.

Some patients may feel difficulty in voiding or need to strain to urinate.

3. Flank or Lower Back Discomfort

• Approximately 50% of patients report mild to moderate flank or lower back pain after stent placement.
• Pain may worsen during urination or when the bladder is full, often related to urine reflux caused by the stent.

4. Stent-Related Infection

• Symptoms may include fever, chills, cloudy or foul-smelling urine.
• Patients with preexisting urinary tract infections or impaired kidney function are at higher risk.

5. Stent Migration

• Occurs in about 3–10% of cases; the stent may move upward into the kidney or downward into the bladder.
• Common causes include vigorous activity or improper stent length.

6. Encrustation or Obstruction of the Stent

• Long-term indwelling (usually over 3 months) may lead to encrustation.
• Symptoms include worsening flank pain or impaired kidney function.

7. Rare but Serious Complications

• Stent fracture (rare, often related to material aging)
• Ureteral perforation (extremely rare)

Postoperative Precautions

1. Daily Life Management

Fluid intake:

Maintain 2000–2500 ml of fluids per day to prevent urine concentration.

Activity guidance:

• Avoid sudden bending, twisting, or vigorous movements.
• Limit heavy physical labor and strenuous exercise.
• When coughing or sneezing, a slight forward bend can help reduce abdominal pressure.

Urination habits:

• Do not hold urine; urinate promptly when you feel the urge.
• Lean slightly forward while urinating to reduce urine reflux.

2. Dietary Recommendations

• Maintain a balanced diet with plenty of fresh fruits and vegetables.
• Limit coffee, alcohol, and spicy foods to reduce bladder irritation.
• Patients with a history of urinary stones should adjust their diet according to stone composition.

3. Symptom Monitoring and Response

Normal reactions:

• Mild urinary frequency or urgency (less than 8 times/day).
• Light pink urine, especially after physical activity.
• Mild lower back or flank discomfort.

Conditions requiring medical attention:

• Persistent bright red urine or blood clots.
• Fever over 38°C.
• Severe, unrelieved flank or back pain.
• Complete inability to urinate.
• Stent visibly protruding from the urethra.

4. Special Considerations for Certain Populations

• Children: Parents should closely observe urination and activity levels.
• Elderly: Strengthen fall-prevention measures and monitor for cognitive changes.
• Pregnant women: Requires joint follow-up with obstetrics and urology.

5. Follow-up and Stent Removal

• Attend follow-up appointments strictly as advised; typical indwelling time is 2–6 weeks.
• For long-term stents, replacement is generally required every 6–12 months.
• Never forget stent removal; delayed removal may lead to serious complications.
• Mild symptoms may persist 2–3 days after removal but usually resolve quickly.

Disclaimer

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2. The medical information provided here is for reference only and should not be used as a basis for clinical diagnosis or treatment.