Fig. 5From: Pulmonary artery to aorta ratio for the detection of pulmonary hypertension: cardiovascular magnetic resonance and invasive hemodynamics in heart failure with preserved ejection fractionKaplan-Meier analysis according to pulmonary artery to ascending aorta ratio. Patients with a pulmonary artery to ascending aorta (PA:Ao) ratio <0.83 showed a significantly better event-free survival than patients with a PA:Ao ratio ≥0.83Back to article page