Jan 16, 2018 · This is systolic anterior motion (SAM) of the leaflet intermittently causing obstruction of the left ventricular outflow tract (LVOT). In general, for any degree of chronic mitral regurgitation leading to pulmonary hypertension, one must focus on the pulmonary vascular resistance (PVR), volume status, and right heart metrics.

May 5, 2022 · Left ventricular outflow tract obstruction (LVOTO) is commonly associated with systolic anterior motion (SAM) of the mitral valve. Congenital heart disease is an important cause in the paediatric population.

Dec 23, 2022 · In most patients with HCM, due to elongated leaflets, there is a systolic anterior motion of the anterior mitral valve leaflet (SAM). The SAM creates dynamic LVOT obstruction. The narrower diameter of the LVOT due to increased septal wall thickness contributes to …

Jan 18, 2012 · Systolic anterior motion (SAM) describes the dynamic movement of the mitral valve (MV) during systole anteriorly towards the left ventricular outflow tract (LVOT). SAM was first documented by Termini et al. three-decades ago and was initially considered to be specific to hypertrophic cardiomyopathy (HCM), but is now recognized to arise in any ...

Oct 10, 2022 · Left ventricular outflow obstruction from hypertrophic cardiomyopathy is usually caused by SAM. SAM is when the anterior leaflet of the mitral valve does not coapt with the posterior leaflet and is pulled over towards the intraventricular septum blocking the outflow tract.

Nov 15, 2021 · LVOTO is caused by fast-flowing blood through the LV outflow tract which pulls the mitral valve anteriorly (towards the LV outflow tract) due to a Venturi effect. This is known as systolic anterior motion (SAM) of the mitral valve.

Left ventricular outflow tract (LVOT) obstruction with systolic anterior motion (SAM) of mitral valve is not only limited to patients with hypertrophic cardiomyopathy. A diagnosis of LVOT obstruction with SAM is important because conventional ...

Systolic anterior motion (SAM) of the mitral valve is a well-known phenomenon associated with left ventricular outflow tract obstruction and hemodynamic compromise. This finding may occur in patients with or without hypertrophic cardiomyopathy.

Systolic anterior motion (SAM) is a postoperative complication experienced by patients undergoing mitral valve repair. The incidence of SAM after mitral valve repair ranges from 5 to 10%. Early recognition of the signs and symptoms of SAM is …

Apr 18, 2021 · Systolic anterior motion (SAM) of the mitral valve is defined as displacement of the distal portion of the anterior leaflet of the mitral valve toward the left ventricular outflow tract obstruction. It can occur in patients with and without hypertrophic cardiomyopathy.