Effect of Obstruction on Longitudinal Left Ventricular Shortening in Hypertrophic Cardiomyopathy
نویسندگان
چکیده
منابع مشابه
Effect on obstruction on longitudinal left ventricular shortening in hypertrophic cardiomyopathy.
OBJECTIVES We investigated the cause of the midsystolic drop (MSD) in left ventricular (LV) ejection velocities that are observed with hypertrophic cardiomyopathy (HCM) and severe obstruction. BACKGROUND Dynamic obstruction is an important determinant of symptoms and adverse outcome. The MSD in velocity and flow occurs in patients with gradients >60 mm Hg. The nadir velocity in the LV occurs ...
متن کاملEffect of Left Ventricular Outflow Tract Obstruction on Left Atrial Mechanics in Hypertrophic Cardiomyopathy
Left atrial (LA) volumes are known to be increased in hypertrophic cardiomyopathy (HCM) and are a predictor of adverse outcome. In addition, LA function is impaired and is presumed to be due to left ventricular (LV) diastolic dysfunction as a result of hypertrophy and myocardial fibrosis. In the current study, we assess the incremental effect of outflow tract obstruction (and concomitant mitral...
متن کاملSurgical management of left ventricular outflow obstruction in hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy is the single most common form of inherited heart disease. Left ventricular outflow tract obstruction (LVOTO) is a recognised feature of this condition which arises when blood leaving the outflow tract is impeded by systolic anterior motion of the mitral valve. In an important minority of patients, breathlessness, chest pain and syncope may result and persist despite...
متن کاملLeft ventricular outflow obstruction induced by tamponade in hypertrophic cardiomyopathy.
Echocardiographic abnormalities of valvular movement described in patients with pericardial effusions have included systolic anterior motion (SAM) of the mitral valve. Published illustrations have shown, however, "pseudo-SAM" rather than true SAM. We report a patient with asymmetric septal hypertrophy whose echocardiogram during tamponade showed true SAM, which was no longer apparent and could ...
متن کاملThe influence of aortoseptal angulation on provocable left ventricular outflow tract obstruction in hypertrophic cardiomyopathy
OBJECTIVES Aortoseptal angulation (AoSA) can predict provocable left ventricular outflow tract obstruction (LVOTO) in patients with symptomatic hypertrophic cardiomyopathy (HCM). Lack of a standardised measurement technique in HCM without the need for complex three-dimensional (3D) imaging limits its usefulness in routine clinical practice. This study aimed to validate a simple measurement of A...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2007
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2006.10.070