Mini-Perc

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Mini-Perc (Mini Percutaneous Nephrolithotomy)

Mini-Perc is an advanced form of PCNL that uses smaller instruments to access the kidney, making it a safer and less traumatic procedure for stone removal. It is particularly useful for stones that are medium to large in size, complex in shape, or resistant to other non-invasive treatments. By using fine instruments and laser technology, Mini-Perc provides excellent stone clearance with minimal discomfort and faster recovery.

This approach is highly effective for stones larger than 1.5–2 cm, multiple stones, or when other treatments like ESWL or ureteroscopy have not been successful.

When is Mini-Perc Recommended?

  • Kidney stones larger than 15–20 mm.
  • Complex or multiple stones, including staghorn calculi.
  • Cases where ESWL or medical management has failed.
  • Stones in difficult-to-access areas of the kidney.
  • Patients needing a minimally invasive option instead of open surgery.

How is Mini-Perc Performed?

Pre-Procedure Preparation

  • Imaging tests (X-ray, CT scan, ultrasound) to map the stone size, location, and density.
  • Blood and urine tests to assess infection risk and kidney function.
  • Discontinuation of aspirin/blood thinners a week prior as advised.

The Procedure

  • Performed under general anesthesia.
  • A tiny incision (about 5–10 mm) is made in the back under X-ray or ultrasound guidance.
  • A mini-nephroscope is inserted through this tract to reach the kidney.
  • Laser or pneumatic devices are used to fragment the stones.
  • Fragments are removed with suction or retrieval forceps.
  • A temporary stent or nephrostomy tube may be placed for healing support.

After the Procedure

  • Most patients are discharged within 24–48 hours.
  • Mild back soreness or reddish urine may occur for a few days.
  • Follow-up imaging ensures stone clearance.
  • Stents, if placed, are usually removed in 1–2 weeks.

Advantages of Mini-Perc

  • Smaller incision and reduced trauma to kidney tissue.
  • Less bleeding and reduced post-operative pain compared to standard PCNL.
  • High stone clearance rates (up to 98%).
  • Shorter hospital stay and quicker return to daily routine.
  • Safe and effective even for complex stones.

Risks & Complications

  • Infection or fever after surgery.
  • Minor bleeding from the kidney.
  • Occasional need for a repeat procedure if fragments remain.
  • Discomfort due to temporary stent placement.

Home Care & Prevention

  • Rest at home and gradually resume daily activities within a week.
  • Stay hydrated with 2–3 liters of water daily to flush stone fragments.
  • Maintain a balanced diet low in salt, animal protein, and oxalate-rich foods.
  • Take prescribed antibiotics or pain medication as directed.
  • Attend follow-up visits for stent removal and imaging.
  • Adopt preventive lifestyle habits to reduce stone recurrence.