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Table 3 Clavien–Dindo grades of the complications in different groups

From: Safety and efficacy of flexible and semi-rigid ureteroscopy with laser lithotripsy for the management of ureteral calculi in pregnancy

Clavien–Dindo grades Complications Flexible URS + laser lithotripter n:10 Semi-rigid URS + laser lithotripter n:11 URS + triponge stone extraction n:5
Grade 1 Mild haematuria 5 (50%) 7 (63.6%) 4 (80%)
Stent-related symptoms 9 (90%) 10 (90.9%) 3 (60%)
Headache 6 (60%) 8 (72.7%) 2 (40%)
Nausea and vomiting 8 (80%) 9 (81.8%) 4 (80%)
Mild loin pain (fullness) 7 (70%) 6 (54.5%) 2 (40%)
Overall complication 70% 72.7% 100%
Grade 2 Fever 3 (30%) 3 (27.3%) 0 (0%)