The right ventricular response to high afterload: Comparison between atrial switch procedure, congenitally corrected transposition of the great arteries, and idiopathic pulmonary arterial hypertension

The RV develops adaptative mechanisms when faced with increased afterload, behaving more like normal left ventricle. This adaptation is closer when present from birth (ccTGA) without facing subsequent surgical insults. In iPAH, the RV adapts poorly, showing prolonged t-IVT and shortened filling and effective ETs, eventually resulting in lower stroke volume and overall poorer prognosis.