Skip to main content

Table 1 Demographic and preoperative stone characteristics

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

Variable Value
Case no., n 25
Age (year), mean ± SD (range) 42.81 ± 12.3 (22–67)
Gender, M/F 15/10
Stone side, R/L 7/18
Causes of solitary kidney, n (%)  
Non-functioning kidney 18 (72%)
Previous nephrectomy 7 (28%)
Stone size (mm), mean ± SD (range) 18.23 ± 6.27 (9–25)
Stone number, n (%)  
 Single stone 16 (64%)
 Multiple stone 9 (36%)
Stone location, (n)  
 Upper 3 (12%)
 Middle calyx 3 (12%)
 Pelvis 4 (16%)
Lower calyx 7 (28%)
Multiple calyx 2 (8%)
Upper ureter 6 (24%)
Preoperative double-J stenting 5 (20%)
Preoperative serum creatinine (mg/dl) 1.79 ± 1.21
Preoperative GFR (ml/min) 61.12 ± 34.76
Previous stone related intervention, (n) 13 (52%)
 PCNL 3 (12%)
 URS 8 (32%)
 Open and URS 2 (8%)
  1. GFR Glomerular filtration rate, PCNL percutaneous nephrolithotomy, URS ureterorenoscopy