Studies on renal damage from percutaneous nephrolitholapaxy

Area of Science:

• Nephrology
• Urology
• Medical Imaging

Background:

• Kidney stones are a common ailment.
• Percutaneous nephrolitholapaxy (PNL) is a minimally invasive surgical procedure for kidney stone removal.
• Detailed assessment of PNL's impact on renal function is crucial.

Purpose of the Study:

• To comprehensively evaluate the effects of percutaneous nephrolitholapaxy on renal function.
• To assess changes in kidney function before and after PNL.

Main Methods:

• Preoperative and postoperative investigations included excretory urography, gamma camera renography, and computerized tomography.
• Postoperative assessments also involved antegrade nephrostography and renal angiography.
• The procedure involved single-stage nephrostomy, tract dilation, and stone removal under epidural anesthesia.

Main Results:

• Temporary decrease in renal function was observed on postoperative day 1, with most cases returning to baseline levels by 2 weeks.
• Computerized tomography revealed Gerota's fascia thickening and perirenal hematomas in several patients.
• Renal angiography showed parenchymal scarring in some patients and one arteriovenous fistula.

Conclusions:

• Percutaneous nephrolitholapaxy is generally well-tolerated by the kidney.
• While temporary functional changes occur, renal function typically recovers post-PNL.
• The study highlights the safety and efficacy of PNL in managing kidney stones.