Non-invasive Estimation of Pulmonary Vascular Resistance in Patients of Pulmonary Hypertension in Congenital Heart Disease with Unobstructed Pulmonary Flow

Abstract

Background: Pulmonary vascular resistance (PVR) plays a pivotal role in determining 
operability and prognosis in patients with congenital heart disease (CHD) complicated by 
pulmonary hypertension (PH). Right heart catheterization (RHC) is the gold standard for 
assessing PVR, but its invasive nature limits its frequent use, particularly in pediatric 
populations. Non-invasive echocardiographic methods have emerged as promising 
alternatives.