Table 2 Intra- and postoperative clinical data.

From: A randomized clinical trial evaluating the short-term results of ureteral stent encrustation in urolithiasis patients undergoing ureteroscopy: micro-computed tomography evaluation

Variable

Tria Ureteral Stent

Polaris Ultra Ureteral Stent

P-value

(n = 41)

(n = 42)

Surgical types

0.697

Semi-rigid ureteroscopy

8 (19.5)

11 (26.2)

 

Flexible ureteroscopy

31 (75.6)

30 (71.4)

 

Combined

2 (4.9)

1 (2.4)

 

Ureteral access sheath use

31 (75.6)

31 (73.8)

1.000

Stone-free status at the surgery

34 (82.9)

34 (81.0)

1.000

Postoperative antibiotic use

7 (17.1)

8 (19.0)

1.000

Duration, day, median (range)

0.00 (0.00–3.00)

0.00 (0.00–5.00)

0.493

Postoperative complications

2 (4.9)

3 (7.1)

1.000

Phone calls

3 (7.5)

1 (2.4)

0.353

Emergency room visit

3 (7.5)

1 (2.4)

0.353

Readmission

1 (2.5)

1 (2.4)

1.000

Urine Analysis*, n (%)

pH, median (IQR)

6.00 (5.50–6.50)

6.00 (6.00–6.50)

0.291

Hematuria

35 (85.4)

36 (83.7)

0.349

Pyuria

24 (58.5)

26 (63.4)

0.500

Bacteriuria

11 (26.8)

10 (23.3)

0.296

Crystalluria

4 (9.8)

4 (9.3)

0.745

Hydronephrosis, n (%)

0.672

Grade 0

34 (82.9)

37 (90.2)

 

Grade 1

4 (9.8)

3 (7.3)

 

Grade 2

2 (4.9)

1 (2.4)

 

Missing

1 (2.4)

0 (0.0)

 

Duration of stent placement, day, median (IQR)

18.0 (15.0–18.0)

17.0 (15.0–18.0)

0.318

  1. IQR interquartile range. Chi-square test and Wilcoxon test were used for statistical analysis.
  2. *Six patients (Tria: n = 2, and Ultra: n = 4) were missing.