What is Ultra-Mini Percutaneous Nephrolithotomy (UMP)?
Ultra-Mini Percutaneous Nephrolithotomy (UMP) is a minimally invasive surgical procedure designed to remove kidney stones using a very small access point. It is particularly effective for treating medium-sized stones (10–20 mm) located in the renal pelvis or calyces. This technique offers a less invasive alternative to traditional percutaneous nephrolithotomy (PCNL), with the added benefits of reduced recovery time and fewer complications
How is the Procedure Performed?
UMP is typically performed under general anaesthesia. A small incision is made in the skin to access the kidney. Through this incision, a thin sheath is inserted, allowing the surgeon to pass a miniature telescope and specialized instruments into the kidney to locate and remove the stone. The stone is fragmented using a laser or pneumatic device, and the fragments are then removed.
Benefits of UMP
- Minimally Invasive: Utilizes a smaller sheath (11–13 French) compared to standard PCNL, leading to less tissue trauma.
- Reduced Blood Loss: Studies have shown that UMP results in significantly less blood loss, reducing the need for blood transfusions and the risk of kidney vessel damage
- Shorter Hospital Stay: Patients often experience a shorter recovery time, with many being discharged within 24 hours.
- Lower Risk of Complications: The procedure is associated with fewer complications, including a lower incidence of bleeding and infection.
- No Need for Ureteric Stents: UMP often eliminates the need for ureteric stents, which are tubes placed to help urine drain from the kidney
Who is a Suitable Candidate?
UMP is ideal for patients with:
- Kidney stones measuring between 10–20 mm in size.
- Stones located in the renal pelvis or calyces.
- A preference for a minimally invasive approach with a quicker recovery.
Your healthcare provider will assess your specific condition to determine if UMP is the most appropriate treatment option.
Potential Risks and Complications
While UMP is generally safe, as with any surgical procedure, there are potential risks, including:
- Bleeding
- Infection
- Injury to the kidney or surrounding organs
- Incomplete removal of the stone
Your surgical team will take all necessary precautions to minimize these risks.
Recovery and Aftercare
Postoperative care is crucial for a smooth recovery:
- Hospital Stay: Most patients are discharged within 24 hours.
- Pain Management: Mild to moderate pain is common and can be managed with oral medications.
- Activity Restrictions: Avoid strenuous activities for a few weeks as advised by your healthcare provider.
- Follow-Up Appointments: Regular check-ups are essential to monitor healing and ensure the complete removal of kidney stones.
Conclusion
Ultra-Mini Percutaneous Nephrolithotomy offers a modern, effective, and less invasive approach to treating kidney stones. With its benefits of reduced recovery time and fewer complications, it provides a promising option for patients seeking relief from kidney stones. Consult with your healthcare provider to determine if UMP is the right choice for you.