Table 1 Baseline patients characteristics

Total patients n = 60

Mean age ± SD (range)

50.50 ± 13.87 (22–79) years

Gender

 Male; number (%)

20 (33.33)

 Female; number (%)

40 (66.67)

Mean BMI ± SD (range)

28.21 ± 3.84 (20–35)

ASA score

 I; number (%)

28 (46.67)

 II; number (%)

32 (53.33)

 History of previous surgery; number (%)

15 (25%)

Degree of HUN; number (%)

 Mild

29 (48.33)

 Moderate

26 (43.33)

 Severe

5 (8.33)

Site of the stone; number (%)

 Ureter

43 (71.67)

 Pelvic

10 (16.67)

 Calyceal

2 (3.33)

 Pelvicalyceal

5 (8.33)

Number of stones; number (%)

 Single

50 (83.33)

 Multiple

10 (16.67)

Mean stone size ± SD (range) in cm

1.55 ± 0.55 (0.5–3)

Mean HFU ± SD (range)

794.22 ± 296.63 (290–1800)

Mean creatinine level ± SD (range)

1.38 ± 1.39 (0.5–7)