Table 4.

Multiple regression correlating radiological signs of right ventricular strain to clinical outcomes

Dependent variables (clinical outcomes)	Radiological sign of RVS	Independent variables, with 100% agreement (P)	Independent variables, with 67% agreement (P)
Hemodynamic failure	PA trunk >3 cm	0.12	0.32
	Paradoxical septal bowing	0.60	0.48
	RV/LV ratio >1	0.94	0.93
	IVC contrast reflux	0.27	0.18
	Hepatic vein contrast reflux	0.69	0.88
ICU admission	PA trunk >3 cm	0.08	0.29
	Paradoxical septal bowing	0.14	0.35
	RV/LV ratio >1	0.64	0.43
	IVC contrast reflux	0.12	0.15
	Hepatic vein contrast reflux	0.16	0.98
Vasopressor requirement	PA trunk >3 cm	0.21	0.53
	Paradoxical septal bowing	0.14	0.28
	RV/LV ratio >1	0.90	0.15
	IVC contrast reflux	0.63	0.62
	Hepatic vein contrast reflux	0.46	0.55
Mechanical ventilation	PA trunk >3 cm	0.41	0.41
	Paradoxical septal bowing	0.31	0.75
	RV/LV ratio >1	0.52	0.32
	IVC contrast reflux	0.84	0.71
	Hepatic vein contrast reflux	0.92	0.36
Thrombolytic use	PA trunk >3 cm	0.18	0.58
	Paradoxical septal bowing	0.02*	0.47
	RV/LV ratio >1	0.78	0.55
	IVC contrast reflux	0.24	0.41
	Hepatic vein contrast reflux	0.90	0.75
Attributable death to PE	PA trunk >3 cm	0.38	0.65
	Paradoxical septal bowing	0.37	0.65
	RV/LV ratio >1	0.43	1.00
	IVC contrast reflux	0.03*	0.61
	Hepatic vein contrast reflux	0.17	0.33

PE=Pulmonary embolism, ICU=Intensive care unit, RV=Right ventricular, LV=Left ventricular, IVC=Inferior vena cava, PA=Pulmonary artery