Partial nephrectomy using renal artery perfusion for cold ischemia: functional and oncologic outcomes

Area of Science:

• Urology
• Surgical Oncology
• Minimally Invasive Surgery

Background:

• Laparoscopic partial nephrectomy (LPN) is a standard treatment for renal tumors.
• Maintaining renal function during prolonged ischemia is a challenge.
• Cold ischemia with renal artery perfusion offers potential parenchymal protection.

Purpose of the Study:

• To evaluate the safety and outcomes of LPN using renal artery perfusion for cold ischemia.
• To assess long-term oncologic and functional results in patients undergoing this procedure.

Main Methods:

• Retrospective review of 28 LPN cases using cold ischemia between 2000-2006.
• Cold ischemia achieved via renal artery catheterization and perfusion with 4°C lactated Ringer's solution.
• Analysis of operative data, complications, oncologic, and functional outcomes.

Main Results:

• Mean ischemia time was 40.8 minutes.
• Three conversions to open surgery occurred, all completed with cold perfusion.
• No complications were directly related to cold perfusion; 100% disease-specific survival at 45 months median follow-up.
• Mild, transient decrease in renal function observed post-operatively.

Conclusions:

• Renal artery perfusion for cold ischemia during LPN is safe and feasible.
• This technique is a viable option for complex renal tumors requiring extended ischemia times.
• Cold perfusion effectively protects against renal parenchymal damage.