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Topic: Aortic stenosis

Related Topics

Aortic valve stenosis

Aortic valve

Aortic regurgitation

Heart valve

Heart murmur

Hypertrophic obstructive cardiomyopathy

Systole

Mitral regurgitation

Mitral stenosis

Cardiology

Valsalva maneuver

Artificial pacemaker

Digoxin

Rheumatic fever

Angiodysplasia

	Aortic valve stenosis - Wikipedia, the free encyclopedia
		Aortic valve stenosis (AS) is a heart condition caused by the incomplete opening of the aortic valve.
		In Heyde's syndrome, aortic stenosis is associated with angiodysplasia of the colon.
		The flow across the aortic valve is calculated by taking the cardiac output (measured in liters/minute) and dividing it by the heart rate (to give output per cardiac cycle) and then dividing it by the systolic ejection period measured in seconds per beat (to give flow per ventricular contraction).
	en.wikipedia.org /wiki/Aortic_valve_stenosis (1717 words)

	Aortic Stenosis, Cincinnati Children's Hospital Medical Center
		Aortic Stenosis refers to a condition that causes obstruction to blood flow between the left ventricle and the aorta.
		The most common form of aortic stenosis is obstruction at the valve itself, referred to as aortic valvar stenosis, which is the subject of this section.
		Aortic stenosis occurs when abnormalities of the aortic valve lead to narrowing and obstruction between the left ventricle and the aorta.
	www.cincinnatichildrens.org /health/heart-encyclopedia/anomalies/avs.htm (1881 words)

	Aortic Stenosis
		Aortic stenosis is a heart defect that may be congenital (present at birth) or acquired (develop later in life).
		Aortic stenosis may be present in varying degrees, classified according to how much obstruction to blood flow is present.
		aortic homograft - a section of aorta from a tissue donor with its valve intact is used to replace the aortic valve and a section of the ascending aorta.
	www.healthsystem.virginia.edu /uvahealth/peds_cardiac/as.cfm (1898 words)

	Aortic Stenosis
		Aortic stenosis becomes hemodynamically significant when the area is about 1cm2 to 0.8cm2 (as noted above in the above discussion of the area of the valve orifice which can be classified as to severity of stenosis), as the systolic flow is impeded across the valve.
		In the aortic position, a bioprosthetic valve is the valve of choice in most elderly patients because the rate of valve tissue degeneration is considerably lower than in younger age groups and the probability of valve tissue failure in patients over 70 is 20% at 10 years.
		Aortic dissection is most common in the fifth through the seventh decades of life, but has been reported in children as well as the very old.
	www.rjmatthewsmd.com /Definitions/aortic_stenosis.htm (2202 words)

	Aortic Stenosis Glossary of Terms with Definitions on MedicineNet.com
		Aortic regurgitation: The return of blood from the aorta into the left ventricle of the heart due to aortic insufficiency, incomplete closure of the aortic valve.
		Aortic stenosis: Narrowing (stenosis) of the heart valve between the left ventricle of the heart and the aorta.
		Aortic valve: One of the four valves in the heart, this valve is situated at exit of the left ventricle of the heart where the aorta (the largest of all arteries) begins.
	www.medicinenet.com /aortic_stenosis/glossary.htm (4617 words)

	Aortic Stenosis (Site not responding. Last check: 2007-11-01)
		Aortic Stenosis is defined as subtotal obstruction in the channel of left ventricular outflow.
		The aortic calcification that causes acquired aortic stenosis is extremely rare in childhood.
		Patients with subvalvular stenosis present with dilated and tortuos coronary vessels and have an increased risk of coronary artery disease due to increased LV pressures that are generated past the areas of stenosis.
	perfline.com /student/as.html (574 words)

	MedlinePlus Medical Encyclopedia: Aortic stenosis
		Aortic stenosis is the narrowing or obstruction of the heart's aortic valve, which prevents it from opening properly and blocks the flow of blood from the left ventricle to the aorta.
		Aortic stenosis may be present from birth (congenital), or it may develop later in life (acquired).
		Aortic stenosis can be cured with surgery, although there may be a continued risk for arrhythmias, which can sometimes cause sudden death.
	www.nlm.nih.gov /medlineplus/ency/article/000178.htm (817 words)

	U-M CVC - Aortic Stenosis
		Aortic stenosis is a term used to describe congenital heart defects that cause obstruction of blood flow from the heart to the body.
		Mild aortic stenosis is when the pressure difference is less than 30-40 mmHg, moderate aortic stenosis is when the pressure is 40 to 50-60 mmHg, and severe aortic stenosis is when the pressure is greater than 60-70 mmHg.
		If the aortic stenosis is trivial, they may be permitted to participate in competitive athletics but will need to see their cardiologist regularly to make sure that the narrowing has not progressed.
	www.med.umich.edu /cvc/mchc/paraor.htm (2576 words)

	Diseases of the Aortic Valve - Texas Heart Institute Heart Information Center
		Aortic stenosis, a narrowing of the aortic valve that often causes some degree of aortic regurgitation.
		Aortic stenosis is a narrowing or blockage of the aortic valve.
		Congenital defects (those you are born with) and rheumatic fever are the main causes of aortic stenosis in people under 50.
	texasheart.org /HIC/Topics/Cond/vaortic.cfm (762 words)

	Aortic valve stenosis: Causes - MayoClinic.com
		Aortic valve stenosis is narrowing of the aortic valve.
		Known as a bicuspid aortic valve, this deformity may not cause any problems until adulthood, at which time the valve may begin to narrow or leak and may need to be repaired or replaced.
		If the aortic valve is narrowed, the left ventricle has to work harder to pump a sufficient amount of blood into the aorta and onward to the rest of your body.
	www.mayoclinic.com /health/aortic-valve-stenosis/DS00418/DSECTION=3 (844 words)

	Aortic Stenosis
		There are also inflammatory conditions involving the aortic valve that lead to thickening of the leaflets and fusion along the margins of the valve cusps.
		The end result of aortic stenosis is a progressive narrowing of the valve to the point where blood flow across the valve becomes limited.
		Once the aortic valve becomes narrowed to the point where symptoms are present, there is a significant increase in the chances of dying suddenly.
	www.cardiacandvascular.com /patient_ed/aortic_stenosis.htm (947 words)

	Aortic Stenosis - Health Info Channel
		Aortic stenosis (AS), also called aortic valve stenosis, is a condition in which the aortic valve has become narrowed or constricted (stenotic) and does not open normally.
		The aortic valve is located between the left ventricle, or lower chamber of the heart, and the largest artery (aorta).
		This helps overcome aortic stenosis at first, but the left ventricle progressively increases in diameter (dilates), stiffens, and gradually loses its ability to generate enough contractile force to compensate for the stenotic aortic valve.
	www.healthinfochannel.com /aorticstenosis (477 words)

	Aortic Stenosis: Heart Valve Disorders: Merck Manual Home Edition
		Aortic stenosis is a narrowing of the aortic valve opening that increases resistance to blood flow from the left ventricle to the aorta.
		In aortic stenosis, the wall of the left ventricle usually thickens because the ventricle must work harder to pump the blood through the narrowed valve opening into the aorta.
		In adults who have aortic stenosis that causes fainting, angina, or shortness of breath during exertion, the aortic valve is surgically replaced, preferably before the left ventricle is irreversibly damaged.
	www.merck.com /mrkshared/mmanual_home2/sec03/ch028/ch028f.jsp (790 words)

	Aortic Stenosis -- eCureMe.com
		The aortic valve, located between the left ventricle and the aorta, opens when the ventricle pumps blood to the aorta, and closes (passively) when at rest (i.e., between heartbeats).
		Aortic valvular stenosis is due to the progressive buildup of
		Balloon angioplasty (opening a balloon device in the stenotic valve to open it) is used primarily in patients for whom surgery is not an option, or as an alternative to surgery.
	www.ecureme.com /emyhealth/data/aortic_stenosis.asp (451 words)

	Aortic stenosis
		Aortic stenosis is the abnormal narrowing of the aortic valve, which restricts the flow of blood from the ventricle into the aorta.
		Aortic stenosis is the abnormal narrowing of the aortic valve, which impedes the flow of blood from the ventricle into the aorta.
		Aortic stenosis may be a serious and potentially life threatening condition.
	www.disability.vic.gov.au /dsonline/dsarticles.nsf/pages/Aortic_stenosis?OpenDocument (926 words)

	BBC - Health - Conditions - Aortic stenosis
		When the aortic valve is too narrow it causes an obstruction of blood flow, which is known as aortic stensosis.
		Aortic stenosis means narrowing of the aortic valve in the heart.
		If the aortic valve should become stenosed or narrowed, the blood flow through it is reduced and the heart has to work harder to pump blood to the body.
	www.bbc.co.uk /health/conditions/aortic1.shtml (409 words)

	Aortic Stenosis Treatment - CardiologyChannel
		Because patients with aortic stenosis often also have blockages in the coronary arteries, or coronary artery disease (CAD), surgeons typically treat significant blockages by performing bypass surgery at the same time.
		Patients with aortic stenosis who have no symptoms (i.e., are asymptomatic) and have normal left ventricular function and size do not require immediate valve replacement surgery.
		Replacement of the aortic valve requires open-heart surgery, in which the breast bone (sternum) is split down the middle, allowing access to the heart.
	www.cardiologychannel.com /aorticstenosis/treatment.shtml (931 words)

	Aortic Stenosis - My Child Has - Children's Hospital Boston
		The aortic valve allows oxygen-rich (red) blood to flow from the left pumping chamber of the heart, called the left ventricle, to the body's main artery, called the aorta.
		The aortic valve has three leaflets that function like a one-way door, allowing blood to flow forward into the aorta, but not backward into the left ventricle.
		Also, when aortic stenosis is moderate to severe, the left ventricle has to work harder to get blood through the tight aortic valve to the body.
	www.childrenshospital.org /az/Site481/mainpageS481P0.html (1674 words)

	Aortic valve stenosis
		Aortic valve stenosis is often discovered during a routine physical when a doctor hears a heart murmur.
		Aortic valve stenosis also may be related to age and the buildup of calcium deposits on heart valves or a history of rheumatic fever.
		Aortic valve stenosis may lead to blood and fluid backing up in your lungs, which causes congestion that may be visible on an X-ray.
	www.cnn.com /HEALTH/library/DS/00418.html (2944 words)

	eMedicine - Aortic Stenosis : Article by James V Talano, MD, MM, FACC
		, usually is diminished or absent because the AV is calcified and immobile and/or aortic ejection is prolonged or buried in the prolonged systolic ejection murmur.
		The early lesion in the pathogenesis of degenerative calcific AV disease is focal endothelial thickening on the aortic side of the cusps that is initiated by endothelial disruption due to increased mechanical stress and decreased shear stress.
		Aortic root angiogram may show thickening and doming of the AV as well as a poststenotic dilatation of the aortic root.
	www.emedicine.com /med/topic157.htm (8470 words)

	Heart Info - Aortic Valve Stenosis
		Aortic stenosis means that the aortic valve has become narrowed.
		The three major causes of aortic stenosis are calcific degeneration or deposits of calcium on the valve (primarily affects the elderly), congenital abnormality with only two instead of three cusps, and rheumatic fever.
		Aortic stenosis can occur at any age (because the causes are different) but is usually asymptomatic until middle or old age.
	www.heartinfo.org /ms/ency/531/main.html (714 words)

	Congenital Aortic Valve Stenosis
		The aortic valve opens to allow blood to flow from the left ventricle of the heart to the aorta, and then to the body.
		Aortic valve stenosis can run in families or may be due to something that happened to the fetus during pregnancy.
		Adolescents with hypertrophic cardiomyopathy, a type of aortic stenosis where the left ventricle is noticeably enlarged, have the greatest risk of sudden heart failure.
	www.hmc.psu.edu /healthinfo/c/conaorticvalve.htm (573 words)

	Aortic Stenosis and Pregnancy
		Aortic stenosis, a narrowing or stiffening of the aortic valve, creates resistance to blood flow out of the left ventricle.
		If, however, your stenosis is severe enough to cause a significant narrowing of the aortic valve, the result can be a very inefficient heart.
		This device is threaded through a large blood vessel, into the aortic valve itself, and the balloon on the end of the catheter is inflated to enlarge the opening.
	www.webmd.com /content/article/4/1680_51812.htm (691 words)

	Find aortic stenosis treatment options and treatment information at Mayo Clinic
		Aortic valve stenosis obstructs the way blood normally flows through the heart.
		This cause of aortic stenosis is most common in people older than 60, and symptoms often don't appear until age 70 or 80.
		Known as a bicuspid aortic valve, this deformity may not cause problems until adulthood, when the valve may begin to narrow or leak and may need to be repair or replacement.
	www.mayoclinic.org /aortic-valve-disease/aortic-stenosis.html (423 words)

	Aortic valve stenosis (Site not responding. Last check: 2007-11-01)
		When aortic valve stenosis occurs, the aortic valve, located between the aorta and left ventricle of the heart, is narrower than normal size.
		Aortic valve stenosis can occur because of a birth defect in the formation of the valve.
		The prognosis for aortic valve stenosis depends on the severity of the disease.
	www.healthatoz.com /healthatoz/Atoz/ency/aortic_valve_stenosis.jsp (831 words)

	Congenital Aortic Stenosis treatment options at Mayo Clinic (Site not responding. Last check: 2007-11-01)
		Congenital (present at birth) aortic stenosis (AS) is a narrowing of the aortic valve or the area just below or above the aortic valve, which causes resistance to the forward ejection of blood from the left ventricle.
		In many cases of mild aortic stenosis, periodic evaluation is all that is required if heart function and forward blood flow are not significantly compromised.
		Surgery to relieve the area of stenosis is a primary treatment for congenital aortic stenosis.
	www.mayoclinic.org /congenitalaorticstenosis-rst (884 words)

	Aortic stenosis
		There may be a faint pulse or changes in the quality of the pulse in the neck (the change in pulse is known as pulsus parvus et tardus).
		This is a procedure performed through catheterization of the aortic valve via a balloon placed through the artery in the groin, which is advanced across the valve and inflated.
		Aortic stenosis is curable with surgical repair, although there may be a continued risk for arrhythmias, which can sometimes cause sudden death.
	www1.wfubmc.edu /heart/Heart+Diseases/Aortic+stenosis.htm (801 words)

	Aortic Stenosis
		Aortic stenosis is then a narrowing of the aortic valve or a narrowing of the aorta directly above (supravalvar) or below (subvalvar) the aortic valve.
		When aortic stenosis, it makes it very hard for the heart to pump blood to the body.
		Depending on the severity of the stenosis, open heart surgery may be needed to correct the defect.
	www.pediheart.org /parents/defects/AS.htm (130 words)

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