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  • Title: Comparison of RENAL, PADUA, CSA, and PAVP Nephrometry Scores in Predicting Functional Outcomes After Partial Nephrectomy.
    Author: Gupta R, Tori M, Babitz SK, Tobert CM, Anema JG, Noyes SL, Lane BR.
    Journal: Urology; 2019 Feb; 124():160-167. PubMed ID: 30107186.
    Abstract:
    OBJECTIVE: To evaluate the accuracy of radius, exophytic/endophytic, nearness to collecting system/sinus, anterior/posterior, and location relative to polar lines (RENAL), preoperative aspects and dimensions used for anatomical classification (PADUA), contact surface area (CSA), and preoperative assessment of volume preservation (PAVP) nephrometry scores in predicting postoperative renal functional outcomes after partial nephrectomy (PN). Few studies have compared the accuracy of tumor complexity systems directly in the same set of PN patients. MATERIALS AND METHODS: Patients treated with robotic, laparoscopic, or open PN having available imaging (n = 344) were examined. The ability of 4 systems to predict nadir estimated glomerular filtration rate (eGFR [median postoperative day 1]) and new baseline eGFR (median: 0.95 year) was analyzed using univariable and multivariable models. RESULTS: Median preoperative, nadir, and new baseline eGFR were 79 (interquartile range [IQR]: 63-97), 65 (IQR: 47-85), and 80 (IQR: 63-99) mL/min/1.73 m2. Multivariable models incorporating RENAL, PADUA, CSA, or PAVP were similarly predictive of postoperative renal function (nadir eGFR: R2 = 0.683-0.688, new baseline eGFR: R2 = 0.775). In univariable analysis, all 4 complexity systems were predictors of nadir GFR (each P < .05), with RENAL (P = .045), CSA (P = .027), and PAVP (P = .012) also significantly predicting nadir eGFR in multivariable models. No complexity system was significantly associated with new baseline eGFR in multivariable analysis, with only RENAL (P = .023) and PAVP (P = .049) having a statistically significant association in univariable analysis. CONCLUSION: RENAL, PADUA, CSA, and PAVP are all predictors of early postoperative renal function. RENAL and PAVP provided the greatest predictive ability for later renal functional outcomes.
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