Abstract
Pediatric pulmonary arterial hypertension (PAH) may be classified as primary/idiopathic or may be associated with congenital heart (CHD) or lung disease.1 Right ventricular (RV) function over time determines morbidity and mortality.1 Tricuspid annular plane systolic excursion (TAPSE), a measure of RV longitudinal function, is associated with outcomes in adults with PAH,2 but serial pediatric data are limited and are mostly from a single cohort.3,4 Our prior cross-sectional work established that among several echocardiographic parameters, TAPSE best reflects RV stroke work, a measure of RV efficiency in relation to its loading, which is associated with clinical outcomes.
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