title: Avoidance of retrograde catheterization by Doppler echocardiographic diagnosis of Björk-Shiley aortic valve dysfunction.
abstract: A 74-year-old man with a history of prior Björk-Shiley aortic valve replacement was admitted with chest pain and dyspnea. Results of physical examination and cinefluoroscopy suggested a dysfunction of the prosthetic valve; imaging echocardiography was not helpful. Nonimaging continuous wave Doppler examination confirmed severe prosthetic aortic valve dysfunction, necessitating emergent replacement, and potentially hazardous retrograde catheterization of the prosthesis was avoided.
authors.affiliation: Section of Cardiology, University Medical Center, University of Arizona, Tuscon.
authors.forename: S B
authors.initials: SB
authors.lastname: Baron
authors.forename: K A
authors.initials: KA
authors.lastname: Comess
mesh_terms: D000368:Aged; D001021:Aortic Valve; D006328:Cardiac Catheterization; D015150:Echocardiography, Doppler; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D011475:Prosthesis Failure; D013927:Thrombosis / Q000175:diagnosis