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Table 2 Perioperative and postoperative characteristics of patients

From: Simultaneous retrograde intrarenal surgery for ipsilateral asymptomatic renal stones in patients with ureteroscopic symptomatic ureteral stone removal

 

Group A

Group B

 

(URL + RIRS)

(URL alone)

Variable

72 patients

72 patients

P

Operative duration, mean (SD), range (min)

72.4 (21.3),42.5–100

36.4 (10.2),24–50

<0.001

Haemoglobin drop (g/dL), mean (SD)

0.5 (0.21),0.1–0.7

0.2 (0.11),0.1–0.4

<0.001

Hospital duration, mean, (SD), range (days)

6.4 (2.9),3–12

5.3 (2.1),2–12

0.521

Complication rate, no. (%)

8 (22.2)

5 (13.9)

0.358

Modified Clavien classification

   

GradeI

8 (11.1)

4 (5.6)

 

Grade II

4 (5.6)

4 (5.6)

 

Grade IIIa

4 (5.6)

2 (2.8)

 

Pain visual analogue score (1 – 10), mean, (SD), range

   

At 6 h

4.3 (1.3),4–7

3.1 (1.1),2–6

<0.001

At 12 h

2.8 (0.9),2–5

2.1 (0.7),1–4

<0.001

At 24 h

2.0 (0.3),1–4

1.8 (0.1),1–3

0.477

Ureteral stone free rate (U-SFR), no. (%)

72 (100)

72 (100)

-

Renal stone free rate (R-SFR), no. (%)

62 (86.1)

0 (0)

<0.001

Stone composition, no. (%)

  

0.872

Calcium oxalate

34 (47.2)

30 (41.7)

 

Calcium oxalate and phosphate

20 (27.8)

24 (33.3)

 

Uric acid

16 (22.2)

14 (19.4)

 

Struvite

2 (2.8)

4 (5.6)