title: Quantification of left-to-right shunt in patent ductus arteriosus with the PISA method.
abstract: Direct Doppler echocardiographic calculation of shunt flow in patent ductus arteriosus (PDA) may be difficult because the orifice area is not well visualized. We used proximal isovelocity surface area (PISA) method to calculate the effective shunt orifice area and the shunt volume in a patient with PDA. The PISA calculation correlated well with shunt estimation by echocardiographic volumetric methods and by oximetry.
authors.affiliation: Department of Medicine, Medical Center, New York University School of Medicine, 560 First Avenue, New York, NY 10016, USA. Itzhak.Kronzon@med.nyu.edu
authors.forename: Itzhak
authors.initials: I
authors.lastname: Kronzon
authors.forename: Paul A
authors.initials: PA
authors.lastname: Tunick
authors.forename: Barry P
authors.initials: BP
authors.lastname: Rosenzweig
mesh_terms: D000328:Adult; D004374:Ductus Arteriosus, Patent / Q000000981:diagnostic imaging*; D018618:Echocardiography, Doppler, Color; D017548:Echocardiography, Transesophageal; D006801:Humans