Retrospective Study
Copyright ©The Author(s) 2020.
World J Clin Cases. Oct 26, 2020; 8(20): 4753-4762
Published online Oct 26, 2020. doi: 10.12998/wjcc.v8.i20.4753
Table 1 Demographic data of the included patients
Retroperitoneal group (n = 7)Transperitoneal group (n = 5)P value
Age (yr)37.29 ± 13.3032.40 ± 15.240.567
Gender1.000
Male, n (%)3 (42.9)2 (40.0)
Female, n (%)4 (57.1)3 (60.0)
Laterality1.000
Left, n (%)5 (71.4)4 (80.0)
Right, n (%)2 (28.6)1 (20.0)
BMI (kg/m2)21.69 ± 1.8622.65 ± 2.430.457
Preoperative symptoms0.559
Flank pain, n (%)5 (71.4)4 (80.0)
Abdominal pain, n (%)1 (14.3)1 (20.0)
Hematuria, n (%)1 (14.3)0 (0.0)
Preoperative infection0.558
No, n (%)5 (71.4)2 (40.0)
Yes, n (%)2 (28.6)3 (60.0)
Hydronephrosis degree1.000
≤ 1, n (%)3 (42.9)3 (60.0)
2, n (%)4 (57.1)2 (40.0)
Maximal stone diameter (mm)26.71 ± 4.2728.40 ± 4.040.507
Stone number0.125
1, n (%)4 (57.1)2 (40.0)
2, n (%)3 (42.9)1 (20.0)
3, n (%)0 (0.0)2 (40.0)
Isthmus thickness (cm)4.07 ± 1.104.18 ± 0.750.853
Operation time (min)194.29 ± 102.48151.40 ± 39.540.399
Estimated blood loss (mL)48.57 ± 31.8572.00 ± 41.470.292
Postop fasting time (d)1.29 ± 0.492.40 ± 0.890.019
Hospital stay (d)12.14 ± 2.6112.40 ± 3.210.881
Minor complications, n (%)1 (14.3)1 (20.0)1.000
Major complications, n (%)0 (0.0)0 (0.0)N/A
eGFR [mL/(min·1.73 m2)]
Preoperative143.00 ± 24.34126.00 ± 40.480.383
Postoperative day 1139.14 ± 23.97123.80 ± 40.670.428
Postoperative day 30139.71 ± 26.23123.60 ± 39.420.398
Mean follow-up29.42 ± 23.8727.79 ± 21.750.906
SFR, n (%)7 (100.0)5 (100.0)1.000
Table 2 Intergroup comparisons of postoperative estimated glomerular filtration rate change relative to preoperative levels
eGFR [mL/(min·1.73 m2)]Retroperitoneal group (n = 7)Transperitoneal group (n = 5)P value
Postoperative day 1-3.86 ± 0.69-2.20 ± 2.170.176
Postoperative day 30-3.29 ± 1.11-2.40 ± 2.070.581