The Role of Antegrade Irrigation via Percutaneous Nephrostomy on Surgical Outcomes in Semirigid Ureteroscopy among Patients with Upper Ureteral Stones
Table 3
Subgroup analysis according to stone size.
Stone size >10 mm
Retrograde (n=24)
Antegrade (n=20)
p value
Operation time (min)
87.96 ± 34.91
54.05 ± 31.17
0.002
Postoperative hospital stay (days)
1.79 ± 1.06
3.80 ± 5.45
0.526
Stone-free (yes/no)
14/10
18/2
0.039
UTI (yes/no)
2/22
3/17
0.646
Stone size 5–10 mm
Retrograde (n=65)
Antegrade (n=25)
p value
Operation time (min)
50.80 ± 24.86
34.08 ± 19.53
0.003
Postoperative hospital stay (days)
1.63 ± 1.98
2.12 ± 3.84
0.694
Stone-free (yes/no)
59/6
25/0
0.181
UTI (yes/no)
3/62
2/23
0.615
Data were expressed as mean ± standard deviation or number of relevant cases. UTI: urinary tract infection. Student’s t-test. Mann-Whitney U test. Chi-square test. Fisher’s exact test.
