Aortic Stenosis
Aortic Stenosis
Aortic Stenosis
Aortic Stenosis
AorticStenosis
Incidence
Diagnosis
Valvular
LeftVentricularOutflowTract
Obstruction
Incidence
Aortic stenosis (AS) is the most common acquired valvular lesion in adults. Incidence is increasing as the population ages and with improvements in diagnostic modalities, primarily Doppler echocardiography.
Symptoms and prognosis are related to the degree of left ventricular outflow tract (LVOT) obstruction.
Differential diagnosis of LVOT obstruction
• Valvular stenosis: calcific AS is the most common etiology.
• Supravalvular stenosis: tubular narrowing of proximal ascending aorta is commonly associated with William’s syndrome.
• Subvalvular stenosis: discrete membrane or a tubular muscular narrowing. Dynamic obstruction can occur in hypertrophic obstructive cardiomyopathy (HOCM).
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