Predictive factors for postoperative renal function after off-clamp, non-renorrhaphy partial nephrectomy.

Area of Science:

• Nephrology
• Urology
• Surgical Oncology

Background:

• Limited data exists on perioperative renal function in off-clamp, non-renorrhaphy open partial nephrectomy.
• This study addresses the need to understand factors influencing kidney function post-procedure.

Purpose of the Study:

• To identify predictors of perioperative decline in renal function.
• Focus on off-clamp, non-renorrhaphy open partial nephrectomy for renal tumors.

Main Methods:

• Retrospective review of 138 patients undergoing the specific surgical technique.
• Calculation of perioperative estimated glomerular filtration rate (eGFR) preservation.
• Multivariate regression analysis to identify predictors at 5 days, 1 month, and 3 months post-surgery.

Main Results:

• Mean eGFR preservation was 95.3% (5 days), 91.0% (1 month), and 90.7% (3 months).
• Estimated blood loss predicted eGFR decline at 5 days and 1 month.
• Preoperative eGFR and estimated blood loss predicted eGFR decline at 1 month.
• Age, preoperative eGFR, and estimated blood loss predicted eGFR decline at 3 months.

Conclusions:

• Estimated blood loss is a key predictor of short-term (within 3 months) eGFR decline.
• Age is a significant predictor of longer-term (3 months) eGFR decline.
• Findings highlight the importance of managing blood loss and considering patient age for renal function preservation.