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Table 3 Perioperative complications according to modified Clavien classification system

From: The effect of preoperative ureteral stenting in retrograde Intrarenal surgery: a multicenter, propensity score-matched study

 

After propensity score-matching

Variables

Non-stented group

(n = 339)

Preoperatively stented group

(n = 113)

p-value

Intraoperative complication

Grade I

 Intrarenal bleeding

9 (2.7%)

1 (0.9%)

0.410

Grade II

 Arrhythmia

0 (0.0%)

1 (0.9%)

0.845

Grade III

 Ureter perforation

0 (0.0%)

1 (0.9%)

0.872

Postoperative complication

Grade I

 Fever

9 (2.7%)

2 (1.8%)

0.664

Grade II

 Blood transfusion

0 (0.0%)

0 (0.0%)

NA

  Urinary tract infection

9 (2.7%)

5 (4.4%)

0.519

  Acute pyelonephritis

6 (1.8%)

0 (0.0%)

0.478

Grade III

 Ureteral stricture

1 (0.3%)

1 (0.9%)

0.965

Grade IV

 Sepsis

0 (0.0%)

0 (0.0%)

NA