ventricular hypertrophy(redirected from Hypertrophy, right ventricular)
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increase in volume of a tissue or organ produced entirely by enlargement of existing cells. See also hyperplasia and proliferation. adj., adj hypertro´phic.
asymmetrical septal hypertrophy
benign prostatic hypertrophy (BPH) age-associated enlargement of the prostate resulting from proliferation of glandular and stromal elements, beginning generally in the fifth decade of life; it may cause urethral compression and obstruction. Called also benign prostatic hyperplasia and nodular hyperplasia of the prostate.
cardiac hypertrophy enlargement of myocardial cells and hyperplasia of nonmuscular cardiac components due to pressure and volume overload and sometimes to neurohumoral factors.
compensatory hypertrophy that which results from an increased workload due to some physical defect, such as in an organ where one part is defective, or in one kidney when the other is absent or nonfunctional.
functional hypertrophy hypertrophy of an organ or part caused by its increased activity.
ventricular hypertrophy hypertrophy of the myocardium of a ventricle, due to chronic pressure overload; it is manifest electrocardiographically by increased QRS complex voltage, frequently accompanied by repolarization changes.
Etymology: L, ventriculus + Gk, hyper, excessive, trophe, nourishment
abnormal enlargement of the heart caused by enlargement of the myocardium. It is often caused by hypertension, a valvular disease, or heart failure.
ven·tric·u·lar hy·per·tro·phy(ven-trikyū-lăr hī-pĕrtrō-fē)
Thickening of the ventricles, the portion of the heart that pumps blood.
increase in volume of a tissue or organ produced entirely by enlargement of existing cells.
brown hypertrophy of cere
hypertrophy of the myocardium of a ventricle, causing abnormal deviation of the axis of the electrocardiogram.
pertaining to a ventricle.
ventricular assist device
a circulatory support device consisting of a pump with afferent and efferent conduits attached to the left ventricular apex and the ascending aorta, respectively, each conduit containing a porcine valve to ensure unidirectional blood flow; the pump rests on the external chest wall and is connected to an external pneumatic power source and control circuit.
folds of mucosa, parallel and craniolateral to the vocal cords. Called also false vocal cords, vestibular folds.
double right ventricular outlet
a cardiac anomaly rarely seen in animals in which both the aorta and pulmonary artery arise from the right ventricle and there is a defect in the ventricular septum.
excessive ventricular moderator bands
a rare syndrome of cardiomyopathy in cats caused by an excessive number of moderator bands in the left ventricle, extending from the papillary muscles to the ventricular septum.
see ventricular extrasystole.
see ventricular fibrillation.
ventricular function curve
see starling curves.
see ventricular hypertrophy.
ventricular outflow obstruction
flow of blood from the ventricles is impaired by lesions or congenital abnormalities in the outflow tract. This is usually associated with hypertrophy of the ventricle and can be demonstrated with echocardiography or contract radiography. Left outflow obstruction occurs with stenosis and other anomalies of the aorta; right outflow obstruction occurs with pulmonic stenosis, pulmonic insufficiency, tetralogy of Fallot, and double-chambered right ventricle.
ventricular premature contraction (VPC)
see premature heartbeats.
due to focal weakness causes sudden death due to cardiac tamponade.
ventricular septal defect
a congenital heart defect in which there is persistent patency of the ventricular septum in either the muscular or fibrous portion most often due to failure of the bulbar septum to completely close the interventricular foramen. The defect permits flow of blood directly from one ventricle to the other, bypassing the pulmonary circulation and producing varying degrees of cyanosis because of oxygen deficiency. Its clinical characteristics also include a systolic murmur and a palpable thrill on both sides of the chest, dyspnea and poor exercise tolerance. The occurrence is sporadic except that it is inherited in goats and dogs.
the muscular wall between the ventricles. A small section, between the aortic vestibule and the right atrium, is membranous. Failure of the septum to close completely during fetal growth causes a septal or subaortic defect.
ventricular shortening fraction
in echocardiography, the percentage change in diameter from diastole to systole. Calculated from the internal systolic and diastolic dimensions. It is a measure of mycocardial function.
ventricular slice method
a method for examination of fixed heart by cutting it into 0.5 inch thick slices, perpendicular to the plane of the ventricular septum, from apex to base. Useful in examination of myocardial lesions and cardiomyopathy.
is manifested by a high heart rate with or without arrhythmia. In both cases there is severe cardiac disease and often acute heart failure.