systolic anterior motion


Also found in: Acronyms.

systolic anterior motion (SAM),

abnormal motion of the anterior mitral valve into the aortic outflow tract caused by asymmetric septal hypertrophy.
See also: asymmetric septal hypertrophy.
References in periodicals archive ?
Severe mitral systolic anterior motion complicating aortic valve replacement.
Mitral systolic anterior motion (SAM) with dynamic left ventricular outflow obstruction following aortic valve replacement.
Systolic anterior motion of the mitral valve after aortic valve replacement for aortic insufficiency.
Jiang L, Levine RA, King ME, Weyman AE(Mar 1987)."An integrated mechanism for systolic anterior motion of the mitral valve in hypertrophic obstructive cardiomyopathy based on echocardiographic observations".
Patterns of systolic anterior motion of the mitral valve in hypertrophic cardiomyopathy: assessment by two-dimensional echocardiography.
Systolic anterior motion of the posterior mitral leaflet: a previously unrecognized cause of dynamic subaortic obstruction in patients with hypertrophic cardiomyopathy.
Prevalence of systolic anterior motion of the mural (posterior) leaflet of the mitral valve in hypertrophic cardiomyopathy: an echocardiographic study.
Abbreviations POTS: Postural tachycardia syndrome OCM: Obstructive cardiomyopathy without severe septal hypertrophy HOCM: Hypertrophic obstructive cardiomyopathy SAM: Systolic anterior motion LVOT: Left ventricular outflow tract.
Echocardiography data indicates that systolic anterior motion (SAM) of the mitral valve is initiated by flow drag; the mitral valve is swept toward the septum by the pushing force of flow (Fig.
Morphological determinants of echocardiographic patterns of mitral valve systolic anterior motion in obstructive hypertrophic cardiomyopathy.
Dynamic systolic anterior motion of the mitral valve (SAM) with mitral-septal contact is the most common cause of obstruction.
Obstruction, most commonly due to systolic anterior motion of the mitral valve (SAM) and mitral-septal contact, occurs in 50% of all HCM patients, worsens symptoms and increases mortality.