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Table 2 Operative characteristics, outcome and complications of ureteroscopic Ho:YAG laser lithotripsy in 88 patients: proximal versus distal ureteral calculi

From: Efficacy and safety of Ho:YAG Laser Lithotripsy for ureteroscopic removal of proximal and distal ureteral calculi

Number of patients Proximal stones 51 Distal stones 37 P value
Ureteroscope number of procedures (%)    
Semirigid 12 (21.1) 37 (100) < 0.001
Flexible 2 (3.5)
Combination 43 (75.4)
Operation time (min)* 81,3 + 4,5 65.7 ± 3.8 0.017
Laser time (sec)* 379.8 + 50.8 154.3 ± 38.1 0.009
Total energy (J)* 2528,8 ± 422.6 1148.5 ± 400.7 0.002
Number of patients with postoperative stent (%) 50 (87.7) 31 (83.8) 0.596
No of intra operative complications (%) 1 (1.8) 2 (5.4) 0.334
No of early post-operative complications (%) 1 (1.8) 3 (8.1) 0.141
Overall SFR per patient 48 (94.1) 37 (100) 0.139
SFR after first treatment per patient (%) 42 (82.4) 37 (100) 0.008
SFR after second treatment per patient (%) 48 (94.1) --------- ---------
No of laser procedures* 1.1 ± 0.1 1.0 ± 0.0 0.027
  1. *mean +/- SD.