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Table 2 Operative and postoperative outcomes

From: Retrograde intrarenal surgery for the treatment of renal stones in patients with a solitary kidney: Does access sheath matter?

Variable Value
Mean operative time, (SD, range), (min) 46.15 ± 18.347 (25–100)
Mean lasting time, (SD, range), (min) 30.62 ± 16.454 (10–70)
Mean hospital stays (SD, range) H 23.96 (10.89, 15–48)
Use of UAS, n (%) 05 (20%)
Use of fluoroscopy guidance, n (%) 07 (28%)
Stone clearance, n (%)  
 Primary stone clearance 21/25 (84%)
 Secondary stone clearance 23/25 (92%)
SFR and size of the stone n (%)  
 < 20 mm 13/16 (81.25%)
 > 20 mm 7/9 (77.77%)
SFR and UAS  
 Without (20/25) (18/20) (90%)
 With (5/25) (3/5) (60%)
Mean number of procedures per patient 1.08
Postoperative double-J stenting 24/25 (96%)
The ancillary procedure, n (%)  
 SWL 1/25 (4%)
 RIRS 1/25 (4%)
 URS 1/25 (4%)
Complications by modifies Clavien grading system  
 Clavien Grade I, n (%)  
  Fever 3/25 (12%)
  Hematurea 1/25 (4%)
 Clavien Grade II n (%)  
  Non obstructive pyelonephritis 1/25 (4%)
 Clavien Grade IIIb  
  Steinstrasse 1/25 (4%)
  1. GFR Glomerular filtration rate, PCNL percutaneous nephrolithotomy, URS ureterorenoscopy; SFR stone-free rate, UAS ureteral access sheath, SWL shockwave lithotripsy