Stenosis

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Related to tricuspid stenosis: Tricuspid valve stenosis

stenosis

[stə′nō·səs]
(medicine)
Constriction or narrowing, as of the heart or blood vessels.

Stenosis

 

the narrowing of a physiological opening or the lumen of a tubular organ. Examples of the former include stenosis of the left atrioventricular orifice of the heart, or mitral stenosis. Examples of the latter include stenosis of the intestine, trachea, bronchi, arteries, or pylorus of the stomach (pylorostenosis).

Stenoses may be congenital (developmental anomalies) or acquired, in which case they may be caused by a tumor or by scarring following an inflammatory process, ulcer, or trauma. Organic strictures are distinguished from functional stenoses, which result from a spasm of the musculature. Severe stenosis hampers the movement of blood, food, and air, and consequently the musculature of the organ located above the stenosis hypertrophies (compensated stenosis). Later, muscle tone decreases, the lumen of the organ above the stricture enlarges substantially, and the movement through the narrowed part becomes disrupted (decompensated stenosis).

Stenosis is treated surgically by enlarging the affected orifice, as in some cases of heart disease, by passing a bougie through the structure involved, by excising the constricted part, or by performing plastic surgery.

References in periodicals archive ?
Cardiologists, cardiac surgeons, and researchers from the US and Canada also discuss physical examination, echocardiographic assessment, medical and surgical therapy, postoperative care, exercise, pregnancy, and diseases such as aortic and mitral stenosis, mitral regurgitation, tricuspid stenosis and regurgitation, pulmonary valve stenosis and regurgitation, and infective endocarditis.
Tricuspid stenosis is very rare, but when present, intravascular volume depletion should be avoided.
Among the primary TVD of rheumatic origin (13/82, i.e., 15.83% of total RHD), isolated tricuspid stenosis (TS) and TR were found in two (2.43%) and eight (9.75%) cases, respectively; combined TS and TR were found in 3 (3.65%) cases; and all but one were associated with simultaneous mitral valve involvement.