PMID- 25265210 OWN - NLM STAT- MEDLINE DCOM- 20151117 LR - 20181202 IS - 1557-900X (Electronic) IS - 0892-7790 (Linking) VI - 29 IP - 4 DP - 2015 Apr TI - The impact of ischemia on long-term renal function after partial nephrectomy in the two kidney model. PG - 474-8 LID - 10.1089/end.2014.0476 [doi] AB - PURPOSE: To determine whether on-clamp partial nephrectomy (ON-PN) has any significant impact on long-term renal function in a two kidney model. PATIENTS AND METHODS: From November 1999 to July 2013, 607 patients underwent PN at our institution. After excluding patients with solitary kidneys, multiple renal masses, and follow-up less than 90 days, 331 remained. Patient demographics were assessed, as was renal function based on pre- and postoperative mercaptoacetyltriglycine (MAG-3) renal scans and change in estimated glomerular filtration rate (eGFR) using the preoperative and most recent recorded creatinine levels. RESULTS: There were a total of 236 patients who underwent ON-PN and 95 who underwent off-clamp PN (OFF-PN) during the study period. The longest follow-up was 12.6 years with mean follow-up of 3 years. Mean ischemia time of patients undergoing ON-PN was 25 minutes (range 8-63 min). No differences were noted between the ON-PN and OFF-PN cohorts with respect to estimated change in eGFR (ON-PN: -6.07 mL/min/1.73 m(2) vs OFF-PN: -6.00 mL/min/1.73 m(2), P=0.69). No differences were noted in the % change in the MAG-3 renal scans (ON-PN: -0.77% vs OFF-PN: -1.1%, P=0.94). A post hoc sensitivity analysis of the same two variables stratified by age revealed no differences in change in estimated GFR or % change in differential function on renal scan. CONCLUSIONS: In the two kidney model, ischemia does not appear to affect long-term renal function outcomes after PN. These data provide evidence that ON-PN is perfectly acceptable in the appropriately selected patient with two kidneys. FAU - Salevitz, Daniel A AU - Salevitz DA AD - Department of Urology, Mayo Clinic Hospital , Phoenix, Arizona. FAU - Patton, Michael W AU - Patton MW FAU - Tyson, Mark D 2nd AU - Tyson MD 2nd FAU - Nunez-Nateras, Rafael AU - Nunez-Nateras R FAU - Ferrigni, Erin N AU - Ferrigni EN FAU - Andrews, Paul E AU - Andrews PE FAU - Humphreys, Mitchell R AU - Humphreys MR FAU - Castle, Erik P AU - Castle EP LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141105 PL - United States TA - J Endourol JT - Journal of endourology JID - 8807503 SB - IM MH - Aged MH - Carcinoma, Renal Cell/*surgery MH - Constriction MH - Female MH - *Glomerular Filtration Rate MH - Humans MH - Kidney/*blood supply/physiopathology MH - Kidney Neoplasms/*surgery MH - Male MH - Middle Aged MH - Nephrectomy/*methods MH - Retrospective Studies MH - *Warm Ischemia EDAT- 2014/09/30 06:00 MHDA- 2015/11/18 06:00 CRDT- 2014/09/30 06:00 PHST- 2014/09/30 06:00 [entrez] PHST- 2014/09/30 06:00 [pubmed] PHST- 2015/11/18 06:00 [medline] AID - 10.1089/end.2014.0476 [doi] PST - ppublish SO - J Endourol. 2015 Apr;29(4):474-8. doi: 10.1089/end.2014.0476. Epub 2014 Nov 5.