Pulmonary endarterectomy in chronic thromboembolic pulmonary hypertension: How can patients be better selected?

Figure 2 Interrelationship of pulmonary arterial pressures for operable chronic thromboembolic pulmonary hypertension and idiopathic pulmonary arterial hypertension patients with similar pulmonary vascular resistance. A: Chronic thromboembolic pulmonary hypertension; B: Idiopathic pulmonary arterial hypertension.