Anomalous papillary muscle producing dynamic left ventricular outflow tract obstruction

A patient with a dynamic left ventricular outflow murmur was shown to have an anomalous anterolateral papillary muscle by transthoracic and transesophageal two-dimensional Doppler echocardiography. High late systolic outflow velocity and systolic anterior motion were demonstrated in the lateral outf...

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Bibliographic Details
Published in:	Journal of the American Society of Echocardiography Vol. 4; no. 3; p. 267
Main Authors:	Roldan, C A, Gurule, F T, Shively, B K
Format:	Journal Article
Language:	English
Published:	United States 01-05-1991
Subjects:	Adult Cardiac Output - physiology Cardiac Volume - physiology Echocardiography Echocardiography, Doppler Humans Male Papillary Muscles - abnormalities Papillary Muscles - diagnostic imaging Systole - physiology Ventricular Function, Left - physiology Ventricular Outflow Obstruction - diagnostic imaging Ventricular Outflow Obstruction - etiology
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Summary:	A patient with a dynamic left ventricular outflow murmur was shown to have an anomalous anterolateral papillary muscle by transthoracic and transesophageal two-dimensional Doppler echocardiography. High late systolic outflow velocity and systolic anterior motion were demonstrated in the lateral outflow tract near the anomalous muscle, suggesting a role for the Venturi effect. This is the first confirmation by Doppler echocardiography of an anomalous papillary muscle contributing to abnormal left ventricular hemodynamics.
ISSN:	0894-7317
DOI:	10.1016/S0894-7317(14)80026-6