Background Pulmonary artery acceleration time (PAAT) is a noninvasive method to assess
pulmonary hemodynamics, but it lacks validity in children. The aim of this study was to
evaluate the accuracy of Doppler echocardiography–derived PAAT in predicting right heart
catheterization (RHC)–derived pulmonary artery pressure (PAP), pulmonary vascular
resistance (PVR), and compliance in children. Methods Prospectively acquired and
retrospectively measured Doppler echocardiography–derived PAAT and RHC-derived …