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Table 2 Comparison of perioperative parameters and outcomes between the groups

From: Flexible ureteroscopy combined with potassium sodium hydrogen citrate(PSHC) intervention improves the stone-free rate(SFR) for 20–30 mm uric acid renal stones

Parameters

Combined Group

None-Combined Group

P value

Total Number

60

70

-

ASA score1

1.43 ± 0.53

1.40 ± 0.52

0.720

Operation time1, (min)

51.83 ± 13.28

50.14 ± 12.60

0.458

Postoperative stay1, days

1.33 ± 0.99

1.43 ± 1.21

0.627

Total Cost1, (US Dollar)

3044.39 ± 204.95

2714.42 ± 203.10

< 0.01

Total Complication,n(%)

10(16.7%)

14(20%)

0.398

Fever(> 38.0°C)(Grade I)

Persistent Hematuria(Grade I)

Stomach Discomfort

Additional Antibiotics(Grade II)

Subcupsular Hematoma(Grade III)

Septic Shock(Grade IV)

2(3.3%)

4(6.7%)

2(3.3%)

4(6.7%)

0(0%)

0(0%)

3(4.3%)

5(7.1%)

0(0%)

4(5.7%)

1(1.4%)

1(1.4%)

0.573

0.597

0.211

0.552

0.538

0.538

SFR1, n(%)

   

4 weeks postoperative

58/60(96.7%)

60/70(85.7%)

0.029

WisQOL score1

124.63 ± 11.12

114.44 ± 14.97

< 0.01

Urine pH 4 weeks postoperative1

6.63 ± 0.43

5.50 ± 0.47

< 0.01

UA 4 weeks postoperative1,umol/L

327.30 ± 93.92

342.69 ± 89.04

0.340

  1. ASA, American Society of Anesthesiologists; min, minutes; US, United State of America; SFR, stone free rate; WisQOL, Wisconsin Stone Quality of Life Questionnaire; UA, Uric Acid
  2. 1 mean