Pelvic injury prognosis is more closely related to vascular injury severity than anatomical fracture complexity: the WSES classification for pelvic trauma makes sense

Table 4 Comparison of patients with minor, moderate, and severe pelvic injuries according to the WSES classification

	WSES pelvic injury classification
	Minor (Gr. A)	Moderate (Gr. B)	Severe (Gr. C)	p (Gr. A vs. B)	p (Gr A vs. C)	p (Gr. B vs. C)
No. of patients	72	66	17
Age (years)	46.4 ± 21.8	43.8 ± 20.8	40.5 ± 23.3	0.76	0.58	0.84
SBP (mmHg)	131.1 ± 24.1	130.2 ± 26.0	84.0 ± 15.2	0.97	0.00*	0.00*
HR (bpm)	90.5 ± 16.8	93.4 ± 17.2	103.4 ± 21.4	0.59	0.02*	0.10
ISS	12.8 ± 4.8	14.6 ± 4.5	16.5 ± 5.7	0.07	0.01*	0.34
RTS	7.82 ± 0.11	7.81 ± 0.13	7.02 ± 0.69	1.0	0.00*	0.00*
TRISS	0.97 ± 0.21	0.97 ± 0.23	0.94 ± 0.08	0.94	0.00*	0.00*
ICU LOS (days)	0.71 ± 1.56	1.06 ± 2.69	3.25 ± 4.79	0.69	0.00*	0.01*
Hospital LOS (days)	9.72 ± 6.9	11.7 ± 5.4	19.1 ± 18.8	0.34	0.00*	0.01*
Transfusion (unit)
ER pRBC	0.38 ± 1.8	0.63 ± 1.7	1.93 ± 2.5	0.72	0.01*	0.04*
ER FFP	0.19 ± 1.0	0.42 ± 1.8	2.75 ± 3.6	0.73	0.00*	0.00*
ER PLT	0.16 ± 1.4	0.18 ± 1.4	0.75 ± 3.0	0.99	0.41	0.44
Total pRBC	2.86 ± 6.2	4.87 ± 6.3	9.81 ± 9.3	0.18	0.00*	0.02*
Total FFP	1.69 ± 7.3	3.01 ± 7.1	5.87 ± 7.7	0.53	0.09	0.33
Total PLT	2.3 ± 10.9	2.54 ± 10.6	4.50 ± 10.6	0.99	0.73	0.78

SBP systolic blood pressure, HR heart rate, bpm beats per minute, ISS injury severity score, RTS revised trauma score, TRISS trauma injury severity score, LOS length of stay, ER pRBC/FFP/PLT units of packed red blood cells/fresh-frozen plasma/platelets transfused in the emergency room; Total pRBC/FFP/PLT units of packed red blood cells/fresh-frozen plasma/platelets transfused throughout hospitalization. *p < 0.05 with statistical significance

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