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Constriction or narrowing, as of the heart or blood vessels.



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 ?
However, in the event of triplex scan revealing stenotic lesion, angioplasty can be planned at the time of routine arteriography, combining diagnostic and therapeutic intervention in the same sitting.
it can be performed close to the stenotic or reconstructed segment
Of those who underwent retrograde catheterization of stenotic aortic valves, 22 of 101 (22%) developed a total of 30 cerebral emboli; 3 patients had acute neurologic deficits.
Percutaneous transluminal balloon angioplasty of stenotic standard Blalock-Taussig shunts: Effect on choice of initial palliation in cyanotic congenital heart disease.
Both studies involved relatively small numbers of women, and both tested whether estrogen replacement could slow progression of preexisting coronary-artery stenotic lesions as measured by quantitative, digital angiography The results failed to show any benefit of estrogen over placebo.
The patient eventually has to undergo conjunctivodacryocystorhinostomy, which involves surgical placement of a permanent Pyrex tube to replace the stenotic nasolacrimal duct.
If you are performing an endometrial biopsy on a patient with a stenotic cervix and the Pipelle bends rather than passing through the cervical os, try using a chilled Pipelle.
gov NCT 00619788) was a prospective non-randomized European multi-center trial investigating the role of the AngioSculpt PTA Scoring Balloon Catheter for the treatment of severe femoro-popliteal stenotic disease ( 8 cm in length).
Continuous wave Doppler revealed 200 mmHg pressure gradient across the stenotic pulmonary valve associated with secondary hypertrophic subpulmonary stenosis (Fig.
The goal of surgical treatment is to remove the stenotic segment of the external auditory canal and to re-create a physiologically functioning tympanic membrane.
Percutaneous coronary intervention (PCI), commonly known as 'coronary angioplasty' or simply 'angioplasty', is a procedure used to treat the stenotic (narrowed) coronary arteries of the heart found in coronary heart disease.
A successful percutaneous coronary intervention with coronary angioplasty and stenting has been performed for 70% stenotic lesions of circumflex artery.