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Longterm changes in creatinine clearance after laparoscopic renal surgery.
Kelley V Foyil1, Caroline D Ames, Genoa G Ferguson
1Department of Biomedical Engineering, Washington University School of Medicine, St Louis, MO, USA.
Journal of the American College of Surgeons
|March 1, 2008
Summary
Renal ischemia during laparoscopic surgery causes acute kidney damage, which is reversible in most patients. However, those with pre-existing medical renal disease may experience long-term renal function decline after ischemia.
Area of Science:
- Nephrology
- Urology
- Surgical Innovation
Background:
- The impact of renal ischemia on kidney function following laparoscopic surgery remains debated.
- Evaluating renal function after laparoscopic renal extirpative and ablative procedures is crucial.
Purpose of the Study:
- To assess the effect of renal ischemia on renal function in patients undergoing laparoscopic renal surgery.
- To compare changes in creatinine clearance (CrCl) across different laparoscopic renal procedures.
Main Methods:
- Retrospective analysis of patients undergoing laparoscopic renal mass procedures (2000-2004).
- Creatinine clearance (CrCl) calculated using the Cockcroft-Gault equation and ideal body weight.
- Comparison of CrCl changes in laparoscopic partial nephrectomy (with/without ischemia) and laparoscopic radical nephrectomy.
Main Results:
- Laparoscopic radical nephrectomy and laparoscopic partial nephrectomy with warm ischemia caused significant postoperative CrCl drops.
- CrCl decrease correlated with warm ischemia duration; changes were not significant at 6 months.
- Patients with medical renal disease risk factors showed a trend towards long-term renal damage after renal ischemia.
Conclusions:
- Ischemia leads to acute, reversible renal damage in patients without medical renal disease.
- Unilateral renal ischemia is associated with substantial long-term renal function changes in patients with pre-existing medical renal disease.
- Eliminating ischemic time is essential for maximal nephron preservation, especially in high-risk patients.
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