Fig. 2From: Atrial septostomy and disease targeting therapy in pulmonary hypertension secondary to neurofibromatosisa, b Short-axis transthoracic echocardiographic view demonstrating the positive remodelling of the right ventricle (RV) 2 years after the atrial septostomy and the initiation of subcutaneous treprostinil. LV = left ventricle c Subxiphoid echocardiographic view of the persistent flow from the left atrium (LA) to the right atrium (RA) at rest d Reversal of flow from RA to LA after isometric exerciseBack to article page