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eISSN: 1643-3750

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An unusual cause of left ventricular outflow tract obstruction: the importance of a new systolic murmur with a large pleural effusion

Bose Afolabi, Gian M Novaro, Craig R Asher

Med Sci Monit 2008; 14(7): CS64-66

ID: 863654


Background: Left ventricular outflow tract obstruction due to systolic anterior motion of the mitral valve occurs as a result of a dynamic interplay between the anatomy and mechanics of the heart. While systolic anterior motion and left ventricular outflow tract obstruction are well-recognized hallmarks of hypertrophic obstructive cardiomyopathy, several other specific etiologies have been described with similar pathophysiology.
Material and Method: We present a unique case of a middle-aged woman who developed acute dynamic left ventricular outflow tract obstruction due to systolic anterior motion of the mitral valve resulting from a large left-sided pleural effusion.
Results:
Conclusions: Dynamic outflow tract obstruction should be considered among the potential causes of a new systolic murmur in patients with large pleural effusions in the absence of valvular heart disease.

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