title: Biphasic pulmonary regurgitation.
abstract: A patient with first-degree atrioventricular (AV) block and pulmonary regurgitation underwent a transthoracic echocardiogram. Continuous wave Doppler interrogation of the pulmonic valve displayed a biphasic regurgitation pattern. A discussion of the potential mechanism underlying this pattern is presented.
authors: Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
authors: George V
authors: GV
authors: Moukarbel
authors: Amil M
authors: AM
authors: Shah
authors: Amanda
authors: A
authors: Tinnemore
authors: Samia
authors: S
authors: Mora
mesh_terms: D000369:Aged, 80 and over; D054537:Atrioventricular Block / Q000150:complications* / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D011665:Pulmonary Valve Insufficiency / Q000150:complications* / Q000000981:diagnostic imaging*; D014463:Ultrasonography