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Retrograde intrarenal surgery for urinary stone disease in patients with solitary kidney: A retrospective analysis of the efficacy and safety
Author(s) -
Kuroda Shinnosuke,
Fujikawa Atsushi,
Tabei Tadashi,
Ito Hiroki,
Terao Hideyuki,
Yao Masahiro,
Matsuzaki Junichi
Publication year - 2016
Publication title -
international journal of urology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 67
eISSN - 1442-2042
pISSN - 0919-8172
DOI - 10.1111/iju.12951
Subject(s) - medicine , renal function , surgery , urinary system , kidney disease , urology , complication , kidney , retrospective cohort study
Objectives To compare outcomes of retrograde intrarenal surgery for urolithiasis between patients with solitary kidneys and patients who have single‐side urolithiasis with bilateral kidneys. Methods We retrospectively analyzed outcomes of retrograde intrarenal surgery in solitary kidney patients (group A) carried out during 2007–2014, and in patients with bilateral kidneys with comparable stone burdens (group B). Stone‐free status was defined as no residual fragment on computed tomography 1 month later. Results There were 19 patients in group A (mean age 62.5 ± 18.4 years, range 14–76 years). The mean stone diameter and burden were 6.0 mm (range 3–24 mm) and 10.42 ± 6.92 mm, respectively. The stone‐free rate was 94.7%, and no repeat procedure was required. The glomerular filtration rate tended to rise post‐surgery (postoperative day 1: 48.67 ± 15.92 mL/min, 100.2%, P = 0.940; postoperative month 1: 51.32 ± 16.90 mL/min, 105.7%, P = 0.101) compared with preoperative rates. The stone‐free rate and surgery time were not significantly different between the two groups, although post‐surgical hospitalization time was longer for group A (4.05 vs 3.08 days, P = 0.037). The change in glomerular filtration rate was not significantly different between groups A and B (postoperative day 1: +0.101 vs +0.547 mL/min, respectively, P = 0.857; postoperative month 1: +2.749 vs 3.161 mL/min, respectively, P = 0.882). No significant difference was found in terms of complication rate. Conclusions Retrograde intrarenal surgery in solitary kidney patients is as safe and effective as in bilateral kidney patients.