Prognostic significance of inferior vena cava volume defined by initial polytrauma CT-imaging: single-center experience of a level-1 trauma center

Table 4 Logistic regression analyses of associations with red blood cell transfusion and massive transfusion within the first 24 h after admission

Parameter	Univariable OR	95% CI	p value		Multivariable OR	95% CI		p-value
a). Red blood cell transfusion (n = 197 patients)
Age	1	0.99 to 1.01	0.799
Sex (1 = male)	1.37	0.89 to 2.11	0.153
BMI	1.04	0.99 to 1.1	0.082
ASA ≥ III	1.07	0.67 to 1.73	0.772
ISS	1.11	1.08 to 1.13	< 0.001		1.09	1.06 to 1.11		< 0.001
GCS ≤ 8 points	2.28	1.52 to 3.41	< 0.001		1.02	0.63 to 1.67		0.929
SBP ≤ 90 mmHg	6.26	3.87 to 10.12	< 0.001		1.83	1.01 to 3.31		< 0.001
IVC volume, cm³	0.95	0.94 to 0.97	< 0.001		0.98	0.96 to 0.99		0.01
b). Massive transfusion (n = 90 patients)
Age	0.99	0.98 to 1	0.125
Sex (1 = male)	1.29	0.77 to 2.16	0.333
BMI	1.02	0.96 to 1.08	0.464
ASA ≥ III	0.9	0.49 to 1.64	0.733
ISS	1.11	1.08 to 1.13	< 0.001	1.07		1.05 to 1.1	< 0.001
GCS ≤ 8 points	2.72	1.56 to 4.75	< 0.001	0.99		0.48 to 2.03	0.976
SBP ≤ 90 mmHg	14.99	8.73 to 25.74	< 0.001	4.94		2.6 to 9.39	< 0.001
IVC volume, cm³	0.94	0.92 to 0.96	< 0.001	0.99		0.96 to 1.01	0.19

OR odds ratio, CI confidence interval, BMI body mass index, ASA American Society of Anesthesiologists classification, ISS injury severity score, GCS Glasgow coma scale, SBP systolic blood pressure, IVC inferior vena cava; bold numbers indicate statistical significance (p < 0.05). Area under the receiver operating characteristic (AUROC) curve for red blood cell transfusion a) 0.833, and for massive transfusion b) 0.878, respectively

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