Unique Doppler pattern of “obstruction alternans” of a St Jude prosthetic mitral valve

We present a case of a patient who was pregnant and had symptomatic, intermittent obstruction of her St Jude mitral prosthesis showing a very unique Doppler flow pattern suggesting impaired disk movement with every other cardiac cycle. Mechanism of this “obstruction alternans” is discussed.

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Bibliographische Detailangaben
Veröffentlicht in:	Journal of the American Society of Echocardiography 2003-08, Vol.16 (8), p.890-893
Hauptverfasser:	Varadarajan, Padmini, Jutzy, Kenneth R, Pai, Ramdas G
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult Echocardiography Echocardiography, Doppler Female Heart Atria - diagnostic imaging Heart Atria - pathology Heart Atria - surgery Heart Valve Prosthesis - adverse effects Heart Ventricles - diagnostic imaging Heart Ventricles - pathology Heart Ventricles - surgery Humans Mitral Valve - diagnostic imaging Mitral Valve - pathology Mitral Valve - surgery Mitral Valve Stenosis - diagnosis Mitral Valve Stenosis - etiology Pregnancy Pregnancy Complications, Cardiovascular - diagnosis Pregnancy Complications, Cardiovascular - etiology Prosthesis Design Prosthesis Failure
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Beschreibung
Zusammenfassung:	We present a case of a patient who was pregnant and had symptomatic, intermittent obstruction of her St Jude mitral prosthesis showing a very unique Doppler flow pattern suggesting impaired disk movement with every other cardiac cycle. Mechanism of this “obstruction alternans” is discussed.
ISSN:	0894-7317 1097-6795
DOI:	10.1067/S0894-7317(03)00323-7