Hypothermic nephrolithotomy in solitary kidneys

Area of Science:

• Nephrology
• Urology
• Surgical Innovation

Background:

• Nephrolithotomy (kidney stone removal) using ischemia and cooling is a known procedure.
• Assessing functional outcomes in patients with a solitary kidney is crucial due to the absence of contralateral compensation.
• Previous studies demonstrated success but could not isolate the effects on a single functioning kidney.

Purpose of the Study:

• To evaluate the functional effects of nephrolithotomy with ischemia and cooling in patients possessing only one kidney.
• To determine the recovery trajectory and long-term functional status post-surgery in this specific patient group.
• To establish the safety and efficacy of the procedure when performed on a solitary kidney.

Main Methods:

• A series of 29 nephrolithotomy operations were conducted on patients with a solitary kidney.
• The surgical technique involved the use of ischemia (restricted blood flow) and cooling.
• Renal function was monitored post-operatively to assess functional changes and recovery patterns.

Main Results:

• All 29 patients experienced temporary post-operative functional deterioration.
• 27 out of 29 patients showed rapid and satisfactory functional recovery, with some exhibiting improvement.
• Two patients had minor functional deterioration but experienced clinical benefits and remain well; no patient required permanent dialysis.

Conclusions:

• Nephrolithotomy with ischemia and cooling is a viable and effective procedure for patients with solitary kidneys.
• Despite temporary functional decline, the kidney demonstrates robust recovery potential, leading to positive clinical outcomes.
• The study confirms the safety of the procedure, highlighting its benefit even in compromised renal scenarios.