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Trifecta Outcomes of Partial Nephrectomy in Patients Over 75 Years Old: Analysis of the REnal SURGery in Elderly (RESURGE) Group

Abstract : BACKGROUND: Partial nephrectomy (PN) in elderly patients is underutilized with concerns regarding risk of complications and potential for poor outcomes. OBJECTIVE: To evaluate quality and functional outcomes of PN in patients >75 yr using trifecta as a composite outcome of surgical quality. DESIGN, SETTING, AND PARTICIPANTS: Multicenter retrospective analysis of 653 patients aged >75 yr who underwent PN (REnal SURGery in Elderly [RESURGE] Group). INTERVENTION: PN. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: Primary outcome was achievement of trifecta (negative margin, no major [Clavien ≥3] urological complications, and ≥90% estimated glomerular filtration rate [eGFR] recovery). Secondary outcomes included chronic kidney disease (CKD) stage III and CKD upstaging. Multivariable analysis (MVA) was used to assess variables for achieving trifecta and functional outcomes. Kaplan-Meier survival analysis (KMA) was used to calculate renal functional outcomes. RESULTS AND LIMITATIONS: We analyzed 653 patients (mean age 78.4 yr, median follow-up 33 mo; 382 open, 157 laparoscopic, and 114 robotic). Trifecta rate was 40.4% (n=264). Trifecta patients had less transfusion (p<0.001), lower intraoperative (5.3% vs 27%, p<0.001) and postoperative (25.4% vs 37.8%, p=0.001) complications, shorter hospital stay (p=0.045), and lower ΔeGFR (p <0.001). MVA for predictive factors for trifecta revealed decreasing RENAL nephrometry score (odds ratio [OR] 1.26, 95% confidence interval 1.07-1.51, p=0.007) as being associated with increased likelihood to achieve trifecta. Achievement of trifecta was associated with decreased risk of CKD upstaging (OR 0.47, 95% confidence interval 0.32-0.62, p<0.001). KMA showed that trifecta patients had improved 5-yr freedom from CKD stage 3 (93.5% vs 57.7%, p<0.001) and CKD upstaging (84.3% vs 8.2%, p<0.001). Limitations include retrospective design. CONCLUSIONS: PN in elderly patients can be performed with acceptable quality outcomes. Trifecta was associated with decreased tumor complexity and improved functional preservation. PATIENT SUMMARY: We looked at quality outcomes after partial nephrectomy in elderly patients. Acceptable quality outcomes were achieved, measured by a composite outcome called trifecta, whose achievement was associated with improved kidney functional preservation.
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Submitted on : Thursday, July 11, 2019 - 11:55:18 AM
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Ahmet Bindayi, Riccardo Autorino, Umberto Capitanio, Nicola Pavan, Maria Carmen Mir, et al.. Trifecta Outcomes of Partial Nephrectomy in Patients Over 75 Years Old: Analysis of the REnal SURGery in Elderly (RESURGE) Group. European Urology Focus, Elsevier, 2019, ⟨10.1016/j.euf.2019.02.010⟩. ⟨hal-02180088⟩



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