Pulmonary artery acceleration time in young children is determined by heart rate and transpulmonary gradient but not by pulmonary blood flow: A simultaneous echocardiography-cardiac catheterization study.
Christiana TaiAnyir HsiehAnita J Moon-GradyRoberta L KellerDavid TeitelHythem M NawaytouPublished in: Echocardiography (Mount Kisco, N.Y.) (2022)
Transpulmonary gradient and heart rate, but not pulmonary blood flow, are important determinants of PAAT in children <36 months undergoing cardiac catheterization. PAAT has low sensitivity for diagnosing elevated PVRi, therefore, should not be solely relied upon in screening for elevated PVRi in young children.