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Topic: Tricuspid valve

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	Tricuspid valve - Wikipedia, the free encyclopedia
		The tricuspid valve is on the right side of the heart, between the right atrium and the right ventricle.
		The largest cusp is interposed between the atrioventricular orifice and the conus arteriosus and is termed the anterior or infundibular cusp.
		Congenital apical displacement of the tricuspid valve is called Ebstein's anomaly and typically causes significant tricuspid regurgitation.
	en.wikipedia.org /wiki/Tricuspid_valve (221 words)

	Heart valve - Wikipedia, the free encyclopedia
		In anatomy, the heart valves are valves in the heart that maintain the unidirectional flow of blood by opening and closing depending on the difference in pressure on each side.
		These are large, multicusped valves that prevent backflow from the ventricles into the atria during systole.
		A common complication of rheumatic fever is thickening and stenosis of the mitral valve.
	en.wikipedia.org /wiki/Heart_valve (626 words)

	Tricuspid valve insufficiency (Site not responding. Last check: 2007-11-01)
		Tricuspid valve insufficiency occurs when a tricuspid valve does not close tightly enough to prevent leakage.
		The tricuspid valve is located between the right atrium and the right ventricle of the heart.
		Since a person with known tricuspid valve insufficiency is at risk for infections of the heart, antibiotics should be taken before and after oral or dental surgery, or urologic procedures.
	www.lifesteps.com /gm/Atoz/ency/tricuspid_valve_insufficiency_pr.jsp (608 words)

	Heart Valve Diseases
		Tricuspid atresia defect is characterized by a small right ventricle, a large left ventricle or only one ventricle, diminished pulmonary circulation, and cyanosis (insufficient oxygen in the blood, which can cause the skin, gums, and lips to be pale or appear blue or gray in color).
		This disease is characterized by the bulging of one or both of the mitral valve flaps during the contraction of the heart.
		This type of valve disease mainly occurs in the elderly and is characterized by a narrowing of the aortic valve opening, increasing resistance to blood flow from the left ventricle to the aorta.
	www.healthsystem.virginia.edu /uvahealth/adult_cardiac/disvalve.cfm (1695 words)

	Heart Info - Tricuspid Valve Disease
		Individuals with tricuspid valve disease are at risk for heart failure and atrial fibrillation (which increases the risk of blood clot formation).
		Tricuspid valve stenosis is usually caused by rheumatic heart disease, although it is occasionally due to a congenital condition.
		Signs of tricuspid valve disease, such as a heart murmur and an abnormal pulse in the jugular vein in the neck, may be detectable during a physical examination.
	www.heartinfo.org /ms/ency/93/main.html (743 words)

	U-M CVC - Ebstein’s Anomaly of the Tricuspid Valve (Site not responding. Last check: 2007-11-01)
		U-M CVC - Ebstein’s Anomaly of the Tricuspid Valve
		In the normal heart, the tricuspid valve is located on the heart’s right side between the atria (the upper chamber) and the ventricle (the lower chamber).
		In older children, if the valve is very leaky and there are symptoms of heart failure, surgery to repair or replace the tricuspid valve and close the atrial septal defect may be needed.
	www.med.umich.edu /cvc/mchc/pareb.htm (1117 words)

	Philadelphia Adult Congenital Heart Center: Tricuspid Valve Defects
		The tricuspid valve is located between the heart's upper and lower chambers on the right side.
		The most common reason for tricuspid valve leakage is high pulmonary pressures caused by a damaged mitral valve or a narrowing (stenosis) of the pulmonary valve.
		Patients with congenital valve disease are at risk for bacterial endocarditis, an infection of the heart’s valves or inner lining (endocardium.) Before having certain dental or surgical procedures performed, it may be necessary to take preventive antibiotics.
	philachd.org /health_info/tricuspid.html (286 words)

	Diseases of the Tricuspid Valve - Texas Heart Institute Heart Information Center
		Diseases of the heart valves are grouped according to which valve or valves are involved and the amount of blood flow that is disrupted by the problem.
		Damage to the tricuspid valve may be caused by rheumatic fever.
		Tricuspid stenosis is a narrowing or blockage of the tricuspid valve.
	texasheart.org /HIC/Topics/Cond/vtricus.cfm (554 words)

	Tricuspid Valve Dysplasia (Site not responding. Last check: 2007-11-01)
		During normal fetal development the tricuspid valve flaps are adhered to the septa (wall separating atrium from ventricle).
		One of the primary causes of tricuspid valve dysplasia, is the failure of the adhesive bonds to degenerate.
		Symptoms of tricuspid valve dysplasia are dependent upon the extent of the malformation, but some of the most common symptoms are: fluid retention, cool extremities and exercise intolerance (possibly followed by collapse).
	www.barkbytes.com /medical/med0055.htm (336 words)

	Valve Disease - Texas Heart Institute Heart Information Center
		As the right ventricle is preparing to push blood through the pulmonary valve, the tricuspid valve closes to stop blood from flowing back into the right atrium.
		This blood is forced through the mitral valve into the lower-left chamber (the left ventricle)—with the mitral valve sealing off to stop the backflow of blood.
		Balloon valvuloplasty is a procedure that may be used to open narrowed tricuspid and pulmonary valves, a narrowed mitral valve, and, rarely, the aortic valve.
	texasheart.org /HIC/Topics/Cond/valvedis.cfm (1501 words)

	eMedicine - Tricuspid Valve Disease : Article Excerpt by: Vibhuti N Singh, MD, MPH, FACC, FSCAI
		However, congenital tricuspid atresia, RA tumors, obstruction of RV inflow due to endomyocardial fibrosis in carcinoid syndrome, tricuspid valve vegetations, presence of a pacemaker lead, or compression due to extracardiac tumors may also produce a clinical picture similar to that of TS.
		Organic tricuspid valve disease is reported to occur in more than one third of patients with rheumatic heart disease, as examined at autopsy on the Indian subcontinent.
		Tricuspid valve disease of rheumatic etiology usually occurs in teenage patients.
	www.emedicine.com /radio/byname/tricuspid-valve-disease.htm (645 words)

	Center for Heart Valve Disease - Northwestern Memorial Hospital - Exceptional Care in the Heart of Chicago
		Tricuspid valve disease usually presents itself when the valve becomes incompetent and blood flows backward when it should be flowing forward to the lungs.
		The most common cause of right ventricular failure and tricuspid valve insufficiency is left-sided or left ventricular failure leading to a backup of pressure through the lungs to the right side of the heart.
		In particular, Dr. McCarthy designed the specialized 3-dimensional tricuspid valve annuloplasty ring, the MC annuloplasty ring, manufactured by the Edwards Lifesciences Corporation, and this ring has become the favored prosthetic ring used to repair the tricuspid valve at many centers around the world.
	www.nmh.org /nmh/heart/heartvalvedisease/tricuspidvalve.htm (390 words)

	eMedicine - Tricuspid Stenosis : Article Excerpt by: Mary C Mancini, MD, PhD
		Tricuspid stenosis is almost always rheumatic in origin and is generally accompanied by mitral stenosis.
		Stenotic tricuspid valves are always anatomically abnormal, and the cause is limited to a few conditions.
		Pathophysiology: Tricuspid stenosis results from alterations in the structure of the tricuspid valve that precipitate inadequate excursion of the valve leaflets.
	www.emedicine.com /med/byname/tricuspid-stenosis.htm (545 words)

	Tricuspid Valve Insufficiency -- eCureMe.com
		Tricuspid valve regurgitation and TR The tricuspid valve is one of four one-way valves that control blood flow through the heart's four chambers.
		TR is usually secondary to a combination of dilation (or enlargement of the chamber) of the right ventricle and high pressure due to increased blood pressure in the lungs (pulmonary hypertension) or obstruction of blood flow from the right ventricle (e.g., pulmonary stenosis).
		Primary causes of tricuspid regurgitation are endocardial cushion defects, blunt trauma or after mitral valve surgery, Ebstein's anomaly (i.e., downward displacement of a distorted tricuspid cusp into the right ventricle), and carcinoid syndrome.
	www.ecureme.com /emyhealth/data/Tricuspid_Valve_Insufficiency.asp (429 words)

	Tricuspid valve stenosis (Site not responding. Last check: 2007-11-01)
		Tricuspid valve stenosis is a narrowing or stiffening of the opening in the valve.
		When the tricuspid valve is narrowed or stiffened, it decreases the amount of blood that can flow through it.
		The decision to repair or replace the tricuspid valve is often based on the health of the aortic and mitral valves, rather than on the severity of stenosis in the tricuspid valve.
	www.healthatoz.com /healthatoz/Atoz/ency/tricuspid_valve_stenosis.jsp (535 words)

	Cardiology - Tricuspid Atresia
		Tricuspid Atresia is a cyanotic or “blue” heart disease characterized by complete failure of the development of the tricuspid valve.
		This valve is known as the tricuspid valve.
		The tricuspid valve serves as a doorway allowing blood to pass in one direction to the RV and then prevents it from flowing backwards.
	www.driscollchildrens.org /DCHWEB/AboutDriscoll/content/cardio_tricuspid_atresia.asp (2436 words)

	Wing-N-Wave Labradors Tricuspid Valve Dysplasia
		There are two atrioventricular valves which control blood flow between the atria and the ventricles: the tricuspid valve which is located between the right atrium and right ventricle and the mitral valve which is located between the left atrium and left ventricle.
		During embryonic development, the flaps of the tricuspid valve are adhered to the wall of the ventricle and cellular degeneration must occur to free the flaps.
		This malformation of the valve is known as tricuspid valve dysplasia and results in regurgitation of blood back into the atrium.
	www.labbies.com /tvd.htm (973 words)

	YourHeart \| Patient Information \| Anatomy/Treatment \| Heart (Site not responding. Last check: 2007-11-01)
		The tricuspid valve lies between the right atrium and the right ventricle and is made up of three leaflets.
		The pulmonary valve is situated between the right ventricle and the pulmonary artery that leads to the lungs.
		The aortic valve is situated between the left ventricle and the aorta, the main artery in the body.
	www.yourheart.org.uk /heart03.php (363 words)

	YourHeart \| Patient Information \| Anatomy/Treatment \| Tricuspid Valve Disease (Site not responding. Last check: 2007-11-01)
		This is a leaking (regurgitant) valve that allows blood to leak backwards into the right atrium from the right ventricle.
		Weakening of the structures of the valve due to ageing process.
		The symptoms of tricuspid regurgitation are usually similar to those of mitral regurgitation as the two disease processes often occur together.
	www.yourheart.org.uk /tricuspid02.php (131 words)

	Tricuspid regurgitation
		Tricuspid regurgitation causes blood to leak back through the tricuspid valve from the right ventricle into the right atrium of the heart.
		In a prolapsed tricuspid valve, the leaflets forming the valves bulge toward the atrium instead of the ventricle.
		Tricuspid regurgitation becomes a problem when high pressure in the pulmonary circulation creates further congestion in the right ventricle, a phenomenon that is usually related to problems with the valves in the left ventricle.
	www.webmd.com /hw/health_guide_atoz/ug1263abc.asp (884 words)

	Tricuspid Valve Disease
		Tricuspid stenosis may also be identified in the carcinoid syndrome, endocarditis, and intracardiac tumors.
		Tricuspid endocarditis is usually from intravenous seeding of the valve leaflets from recurrent episodes of bacteremia.
		Since the majority of tricuspid disease is found in combination with other valvular pathology, the tricuspid valve must be viewed in respect to the entire physiological circuit.
	www.ispub.com /ostia/index.php?xmlFilePath=journals/ijtcvs/vol7n1/tvd.xml (2604 words)

	Formation of the Tricuspid Valve in the Human Heart -- Lamers et al. 91 (1): 111 -- Circulation
		The free lateral wall of the right ventricle (B) is removed in A, C, F, H, I, and K to expose the tricuspid orifice, while in E, the apex of the ventricles is removed to expose the anterior aspect of the tricuspid gully with the fusing endocardial ridges of the outflow segment.
		Before stage 20, the tricuspid gully is still attached to the ventricular wall via trabeculations (A and C), but in the stage 20 embryo (F), the ventricular cavity begins to expand around the lateral wall of the tricuspid gully to form the inferior leaflet (H) and, subsequently, the septal leaflet (J and L).
		and inferior leaflets of the tricuspid valve are displaced apically,
	circ.ahajournals.org /cgi/content/full/91/1/111 (6323 words)

	THE MERCK MANUAL, Sec. 16, Ch. 207, Valvular Heart Disease
		Tricuspid regurgitation (TR) is usually secondary to a combination of RV dilation and high pressure due to severe pulmonary hypertension or RV outflow obstruction.
		TR may occasionally be primary, ie, due to a cleft tricuspid valve (eg, in endocardial cushion defects), blunt trauma, Ebstein's anomaly (ie, downward displacement of a distorted tricuspid cusp into the RV), or carcinoid disease, in which the valve may be fixed in a semi-open position.
		Tricuspid stenosis (TS) is nearly always rheumatic and then nearly always accompanied by dominant mitral stenosis, but occasionally TS is dominant.
	www.merck.com /pubs/mmanual/section16/chapter207/207d.htm (874 words)

	Tricuspid valve insufficiency (Site not responding. Last check: 2007-11-01)
		Tricuspid valve insufficiency is not usually considered to be serious.
		In general, tricuspid valve insufficiency cannot be prevented.
		A rapid, uncoordinated quivering of the upper chamber of the heart.
	www.healthatoz.com /healthatoz/Atoz/ency/tricuspid_valve_insufficiency.jsp (620 words)

	Valvular Heart Disease Basics - Page 1 (Site not responding. Last check: 2007-11-01)
		Deaths due to pulmonic and tricuspid valve disorders are rarer (0.06 percent and 0.01 percent, respectively).
		Depending on which valve is affected, the diagnosis may be aortic stenosis, mitral stenosis, pulmonic stenosis or tricuspid stenosis.
		Depending on which valve is affected, the diagnosis may be aortic regurgitation, mitral regurgitation, pulmonary regurgitation or tricuspid regurgitation.
	heart.healthcentersonline.com /heartvalve/valvulardiseaseoverview.cfm (1056 words)

	heart surgery
		The native valve is removed and a new valve is sewn to the annulus of your native valve.
		This valve is made of bovine pericardial tissue (tissue from a cow heart) that has been preserved in a buffered glutaraldehyde solution and mounted on a flexible frame and a sewing ring of molded silicone rubber, which allows the surgeon to sew the valve to the patient.
		The benefit of this valve is enhanced durability, which is related to the use of pericardium and the specific bioengineering involved in the valve design.
	www.clevelandclinic.org /heartcenter/pub/guide/disease/valve/valvetreatment.htm (1803 words)

	Tricuspid regurgitation
		In the absence of high blood pressure in the lungs (pulmonary hypertension), tricuspid regurgitation is usually asymptomatic.
		Surgery to repair or replace the tricuspid valve (heart valve surgery) may be needed.
		Discuss any history of heart valve disease or any family history of congenital heart diseases before treatment by a health care provider or dentist.
	www.pennhealth.com /ency/article/000169.htm (586 words)

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