Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to valvular stenosis: aortic valvular stenosis, valvular regurgitation, valvular insufficiency
narrowing or contraction of a body passage or opening. See also specific anatomical sites.
obstruction to the outflow of blood from the left ventricle into the aorta. May be due to an anomaly of the valves (valvular), an obstruction in the ascending aorta (supravalvular), or an obstruction in the left ventricular outflow tract (subvalvular). See also aortic subvalvular stenosis, aortic valvular disease.
a common cause of esophageal obstruction, caused commonly by esophageal trauma; congenital stenosis often associated with tracheoesophageal fistula.
left atrioventricular stenosis
see mitral stenosis (below), valvular stenosis.
mesonephric duct stenosis
occurs as stenosis of the ductus deferens or epididymis; may be associated with renal aplasia.
a narrowing of the left atrioventricular orifice. See also mitral commissurotomy.
an acquired disorder in cats, usually following chronic upper respiratory infection, which causes upper airway obstruction with mucopurulent nasal discharge and a wheezing respiration, which is relieved with open mouth breathing.
paramesonephric duct stenosis
focal defects in the duct lead to segmental aplasia or stenosis of the uterine tube or horn.
pulmonary artery stenosis
the commonest cardiac defect in dogs; it is a narrowing of the pulmonary outflow tract and may occur in any one of a number of common sites including infundibular, valvular and subvalvular.
see rectovaginal constriction.
right atrioventricular stenosis
see tricuspid stenosis (below).
has the effect of reducing air flow into and out of the lungs.
narrowing or stricture of the tricuspid orifice of the heart.
pertaining to, affecting or of the nature of a valve.
interferes with the normal rate and smoothness of blood flow through the cardiac orifices. The creation of turbulence results in the appearance of palpable thrills and audible murmurs, stenosis and insufficiency causing congestive heart failure. See also names of cardiac valves.
the valves do not close completely and when pressure is exerted on them blood leaks back through causing inefficient forward movement of the blood and turbulent flow leading to the development of cardiac murmurs.
narrowing of the lumen of the aperture through which the blood passes causing back pressure in the venous or pulmonary circuits. The clinical manifestations include cardiac murmurs and thrills and congestive heart failure. See also stenosis.