Assessment of left ventricular preload by cardiac magnetic resonance imaging predicts exercise capacity in adult operated tetralogy of Fallot: a retrospective study

Table 4 Correlates of CPET parameters on CMR parameters with multiple linear regression analysis adjusting for age and gender

CPET	MRI	Adjusted r	95% CI	P	R ²,%
Mets	RVEDVi	0.41	(0.07, 0.67)	0.019	40.3
	RVESVi	0.35	(0.0004, 0.62)	0.047	37.2
	Effective RVSVi	0.57	(0.28, 0.77)	0.001	51.9
	LVEDVi	0.36	(0.02, 0.63)	0.036	38.1
	LVSVi	0.39	(0.04, 0.65)	0.026	39.2
% predicted Mets	Effective RVSVi	0.42	(0.08, 0.68)	0.017	23.3
Peak oxygen consumption	RVEDVi	0.40	(0.06, 0.65)	0.019	43.7
	Effective RVSVi	0.58	(0.29, 0.77)	<0.001	55.4
	LVEDVi	0.35	(0.003, 0.62)	0.045	41.1
	LVSVi	0.37	(0.04, 0.64)	0.029	42.4
% predicted peak oxygen consumption	Effective RVSVi	0.52	(0.21, 0.73)	0.002	28.2
Anaerobic threshold	PR Fraction	-0.40	-0.66, -0.05	0.023	41.2

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