Abstract
Abstract Background Hypertrophic obstructive cardiomyopathy (obstructive HCM) is an autosomal dominant congenital disease characterized by obstruction of the left ventricular outflow tract with asymmetric septal hypertrophy. Obstructive HCM is predispose to the appearance of malignant ventricular arrhythmias, leading to syncope or sudden death. Case Description A 25-years-old male patient came to the hospital with chief complaint intolerance activity and previous syncope, without history of sudden cardiac death in his family member. ECG showed sinus rhytm with left axis deviation and left ventricular hypertrophy. Chest x ray showed cardiomegaly. The echocardiography showed asymmetric septal hypertrophy (septal/posterior wall thickness ratio 1.31), left atrium dilatation (LAVi 94.2 mL/m2), SAM and mild mitral regurgitation, mild aortic regurgitation, hyperdynamic ejection fraction (79%) with lower longitudinal strain values in basal and mid ventricular septal segment, grade I diastolic dysfunction, resting LVOT gradient 19.53 mmHg , provoked LVOT gradient 47.31 mmHg. Discussion Non-invasive treatment was given due to LVOT gradient below 50 mmHg. The patient prescribed diltiazem 100mg once daily and recommended clinical evaluation follow-up every year or any worsening of symptoms. The other family member suggested for familial screening echocardiography.
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