Stenosis

stenosis

 [stĕ-no´sis] (pl. steno´ses)

an abnormal narrowing or contraction of a body passage or opening; called also arctation, coarctation, and stricture.

aortic stenosis obstruction to the outflow of blood from the left ventricle into the aorta; in the majority of adult cases the etiology is degenerative calcific disease of the valve.

hypertrophic subaortic stenosis (idiopathic hypertrophic subaortic stenosis) a cardiomyopathy of unknown cause, in which the left ventricle is hypertrophied and the cavity is small; it is marked by obstruction to left ventricular outflow.

mitral stenosis a narrowing of the left atrioventricular orifice (mitral valve) due to inflammation and scarring; the cause is almost always rheumatic heart disease. Normally the leaflets open with each pulsation of the heart, allowing blood to flow from the left atrium into the left ventricle, and close as the ventricle fills again so that they prevent a backward flow of blood. In mitral stenosis there is a resultant increase of pressure in the pulmonary artery and hypertrophy of the left ventricle. The usual treatment is surgical replacement of the valve.

pulmonary stenosis (PS) narrowing of the opening between the pulmonary artery and the right ventricle.

pyloric stenosis see pyloric stenosis.

renal artery stenosis narrowing of one or both renal arteries by atherosclerosis or by fibrous dysplasia or hyperplasia, so that renal function is impaired (see ischemic nephropathy). Increased renin release by the affected kidney causes renovascular hypertension, and bilateral stenosis may result in chronic renal failure.

spinal stenosis narrowing of the vertebral canal, nerve root canals, or intervertebral foramina of the lumbar spine, caused by encroachment of bone upon the space; symptoms are caused by compression of the cauda equina and include pain, paresthesias, and neurogenic claudication. The condition may be either congenital or due to spinal degeneration.

subaortic stenosis aortic stenosis due to an obstructive lesion in the left ventricle below the aortic valve, causing a pressure gradient across the obstruction within the ventricle. See also idiopathic hypertrophic subaortic stenosis.

subglottic stenosis stenosis of the trachea below the glottis. A congenital form results in neonatal stridor or laryngotracheitis, often requiring tracheotomy but resolving with age. An acquired form is caused by repeated intubations.

tracheal stenosis scarring of the trachea with narrowing, usually as a result of injury from an artificial airway or trauma.

tricuspid stenosis (TS) narrowing or stricture of the tricuspid orifice of the heart, a condition often seen in patients with severe congestive heart failure, usually the result of volume overload and pulmonary hypertension with right ventricular and tricuspid annular dilation.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ste·no·sis

, pl.

ste·no·ses

(ste-nō'sis, -sēz), Do not confuse this word with atresia or occlusion.

A stricture of any canal or orifice.

[G. stenōsis, a narrowing]

Farlex Partner Medical Dictionary © Farlex 2012

stenosis

(stə-nō′sĭs)

n. pl. steno·ses (-sēz)

A constriction or narrowing of a duct or passage; a stricture.

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ste·not′ic (-nŏt′ĭk) adj.

The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

stenosis

An abnormal ↓ in the diameter of a lumen, in particular of an artery or heart valve–eg, in ASHD with plaque buildup on the inner wall of an artery. See Aortic stenosis, Carotid stenosis, Cervical stenosis, Fishmouth stenosis, Hypertrophic pyloric stenosis, Meatal stenosis, Mitral stenosis, Occlusion, Pulmonary stenosis, Restenosis, Supravalvular aortic stenosis, Subvalvular pulmonary stenosis, Supravalvular pulmonary stenosis. Cf Regurgitation.

McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

ste·no·sis

, pl. stenoses (stĕ-nō'sis, -sēz)

A stricture of any canal, especially a narrowing of one of the cardiac valves.

[G. stenōsis, a narrowing]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

stenosis

Narrowing of a duct, orifice or tubular organ such as the intestinal canal or a blood vessel.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

Stenosis

The narrowing of an opening or passage-way in the body. In arteries, stenosis is caused by a build-up of atherosclerotic plaque, disease, or other disorder.

Mentioned in: Anesthesia, General, Balloon Valvuloplasty, Cervical Spondylosis, Congenital Heart Disease, Heart Surgery for Congenital Defects, Heart Valve Repair, Hydrocephalus, Pulmonary Valve Stenosis, Pyloric Stenosis, Spinal Stenosis, Transient Ischemic Attack, Trigger Finger, Valvular Heart Disease

Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

ste·no·sis

, pl. stenoses (stĕ-nō'sis, -sēz)

Stricture of any canal or orifice.

[G. stenōsis, a narrowing]

Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about Stenosis

Q. Why does Aortic stenosis causes an enlarged heart? My father was recently diagnosed as suffering from enlarged heart due to his Aortic stenosis. what is the connection between those to conditions? As far as I understand that aortic stenosis mean that the aortic valve is too small not too large...

A. there are several explanations for the enlargement of the heart that occurs due to Aortic stenosis. the most reasonable is that the mechanical power that the heart uses makes it bigger. it easy to see it here: http://www.marvistavet.com/assets/images/aortic_stenosis.gif
this is called Left Ventricular Hypertrophy or LVH in abbreviations.
this is a classic LVH E.C.G.
http://www.frca.co.uk/images_main/resources/ECG/ECGresource39.jpg

Q. How does alcohol affect someone who has been diagnosed with aortic valve stenosis? My brother has been diagnosed with aortic valve stenosis and also is a smoker and does drink alcohol on the weekends. He knows that he should stop smoking but what about the effects of alcohol? Does this also contribute to his stenosis?

A. Alcohol changes blood pressure and speed of the heart- that is not a good idea if you have an Aortic stenosis. Could probably makes things worst. I would avoid alcohol… but he should ask GP.

Q. what does c4-5 mild central disk bulging impinging upon cervical cord without spinal stenosis or distortion of the cord . mild righ neural foraminal narrowing from uncovertebral joint hypertropy mean

A. Well this basically means there is a very small narrowing of the cervical (your neck area) spinal canal (where the spinal cord is), however the narrowing does not cause any damage to the spinal cord, therefore probably does not cause any major symptoms involving the nerves. The c4-5 bulging part refers to the part in between the two cervical vertebras c4 and c5, in which the disc (a part in the spinal cord) is sliding a bit side-ways, but again, it does not seem to be causing any trouble.

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