Right ventricular energetic biomarkers from 4D Flow CMR are associated with exertional capacity in pulmonary arterial hypertension

Table 4 Incremental discriminative value of 4D flow parameters

	\({\chi }^{2}\)for RVEF	Total\({\chi }^{2}\)for whole model (RVEF + RV direct flow)	P
Discriminating adverse RV remodelling	41.36	54.74	0.001
Discriminating impaired exercise capacity (% predicted peak VO₂ ≤ 65%)	40.91	49.15	0.004
Discriminating impaired exercise capacity (VE/VCO₂ slope ≥ 36)	34.85	46.45	0.001
Discriminating PAH patients with intermediate and high risk based on risk score	12.32	19.36	0.008
Discriminating PAH patients with intermediate and high risk based on REVEAL 2.0 score	7.33	10.07	0.098

Bold values indicated a statistical significance at P<0.05
RV right ventricular, RVEF right ventricular ejection fraction, VO₂ oxygen uptake, VE minute ventilation, VCO₂ carbon dioxide output, PAH pulmonary arterial hypertension, REVEAL Registry to Evaluate Early and Long-Term PAH Disease Management
P denotes the significance of comparison between two Chi-square models.

ISSN: 1532-429X