Table 5.

Predictors of day-28 mortality in univariate and stepwise multivariate Cox regression analysis

	Univariable		Stepwise multivariable
	hazard ratio (95 % CI)	p	hazard ratio (95 % CI)	p
SOFA score at t0MCS	1.16 (0.95–1.4)	.14	-	-
Cardiac arrest before MCS	2.35 (0.79–7.03)	.13	-	-
RBC transfusion by day on MCS	1.91 (1.17–3.12)	.01	-	-
RRT during ICU stay	2.13 (0.74–6.14)	.16	-	-
SAPS II score at ICU admission	1.04 (1.01–1.07)	.01	1.04 (1.01–1.07)	0.008
Vasoactive-inotropic score before Impella	1.00 (0.998–1.01)	.18	1.01 (1.00–1.02)	.035
Post-AMI cardiogenic shock	3.06 (1.02–9.16)	.05	4.14 (1.20–14.25)	.024
Cardiogenic shock from dilated cardiomyopathy	0.57 (0.16–2.06)	.40	Not included
Postcardiotomy cardiogenic shock	0.32 (0.04–2.44)	.27	Not included
Cardiogenic shock from other etiologies	0.61 (0.08–4.63)	.63	Not included

All patient variables related to mortality in univariate analysis, defined by p < 0.2 and cardiogenic shock etiologies subgroups are reported. Variables with p ≥ 0.2 were not included in the model. The first four variables entered into the model were not independently associated with mortality in the stepwise multivariable model

SOFA Sepsis-Related Organ Failure Assessment, t0MCS time of first initiation of MCS, MCS mechanical circulatory support, RBC red blood cells, RRT renal replacement therapy, ICU intensive care unit, SAPS II Simplified Acute Physiology Score II, AMI acute myocardial infarction