Risk Factors for Systemic Inflammatory Response Syndrome Induced by Flexible Ureteroscope Combined with Holmium Laser Lithotripsy
Table 2
Univariate analysis of risk factors for systemic inflammatory response syndrome induced by flexible ureteroscopic lithotripsy.
Variable
SIRS
No SIRS
value
Age (years)
0.630
Gender
0.959
Male
10 (47.6)
94 (48.2)
Female
11 (52.4)
101 (51.8)
BMI (kg/m2)
0.783
Stone size (cm)
0.002
Stone location
0.941
Ureteral stones
7 (33.3)
70 (35.9)
Renal stones
9 (42.9)
76 (39)
Combined procedure
5 (23.8)
49 (25.1)
Urine culture
≤0.001
Positive
16 (76.2)
19 (16.2)
Negative
5 (23.8)
176 (83.8)
Ureteral access sheath
0.001
F12/14
17 (81)
84 (46.8)
F14/16
4 (19)
111 (53.2)
Surgery time (min)
0.01
Hydronephrosis
0.830
Yes
8 (38.1)
79 (40.5)
No
13 (61.9)
116 (59.5)
Diabetes mellitus
0.767
Yes
2 (9.5)
15 (7.7)
No
19 (90.5)
180 (92.3)
Hospital stay (d)
≤0.001
Stone-free rate (%)
85.7
89.4
0.570
BMI = body mass index; SIRS = systemic inflammatory response syndrome; stone size = the diameter of the largest stone based on preoperative CT scanning.
