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Topic: Mitral atresia

Related Topics

Mitral valve prolapse

Mitral regurgitation

mitral cells

Mitral stenosis

Mitral valve replacement

mitral regurtitation

mitral annulus

Mitral valve prolapse, familial, X linked

Congenital mitral stenosis

Mitral atresia

Congenital mitral malformation

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	Med-Lib - Medical Online Library - English Articles - Oxford Textbook of Surgery - Abnormalities of the ...
		Following the diagnosis of tricuspid atresia in a cyanosed child at birth, attempts to increase pulmonary blood flow by keeping the arterial duct patent are made.
		Mitral valve atresia or absence is often associated with the hypoplastic left heart syndrome in which the left ventricle and the aorta are small and hypoplastic.
		When a direct surgical approach to the mitral valve is contemplated preservation of the valve is of paramount importance, particularly in infants and children.
	med-lib.ru /english/oxford/abnorm_valves.shtml (2658 words)

	Atrioventricular
		Atrioventricular septal defects represent a spectrum of lesions that are associated with maldevelopment of the atrioventricular septum and adjoining atrioventricular valves.
		This common combination, in the absence of mitral regurgitation, is pathophysiological and clinically analogous to a secundum atrial septal defect, although the operative repair is entirely different.
		Atresia of the left-sided atrioventricular valve, when combined with a restrictive intra-atrial communication, results in severe pulmonary venous hypertension with its typical chest radiographic appearance and severe respiratory distress in early life.
	www.pediheart.org /practitioners/defects/atrioventricular/atrioventricular.html (3302 words)

	Birth Defects Link (Site not responding. Last check: 2007-10-24)
		Atresia and stenosis of urethra and bladder neck: meatal stenosis is a narrowing of the opening of the urethra (the tube through which urine leaves the body).
		Choanal atresia, bilateral: congenital obstruction (membraneous or osseous) of the posterior choana or choanae.
		Congenital mitral stenosis: mitral stenosis is a narrowing or obstruction of the opening of the mitral valve, which separates the upper and lower chambers on the left side of the heart.
	www.icbd.org /link.htm (9097 words)

	Mitral valve regurgitation
		Mitral valve regurgitation — or mitral regurgitation — is a condition in which the mitral valve doesn't close tightly, which allows blood to flow backward in your heart.
		Mitral valve prolapse is a condition in which the leaflets and supporting cords of the mitral valve weaken.
		Mitral valve regurgitation may result from damage to the cords that anchor the flaps of the mitral valve to the heart wall.
	www.cnn.com /HEALTH/library/DS/00421.html (3408 words)

	Mitral valve stenosis
		Mitral valve stenosis — or mitral stenosis — is a condition in which the heart's mitral valve is narrowed.
		Mitral valve stenosis is narrowing of the mitral valve.
		Mitral valve prolapse is a disorder in which the mitral valve sags instead of closing tightly.
	www.cnn.com /HEALTH/library/DS/00420.html (3681 words)

	Congenital Heart Defects, What Is, NHLBI DCI
		Pulmonary valve atresia is a defect in which a solid sheet of tissue forms in place of the pulmonary valve.
		Tricuspid valve atresia is a defect in which a solid sheet of tissue forms in place of the tricuspid valve.
		Mitral atresia occurs when a solid sheet of tissue forms instead of the mitral valve, which separates the left atrium and the left ventricle.
	www.nhlbi.nih.gov /health/dci/Diseases/chd/chd_what.html (1059 words)

	Palliative Procedures
		Tricuspid Atresia - improves oxygenation of the desaturated blood due to the the shunt to the pulmonary circulation.
		May be used in Tetralogy of Fallot, tricuspid atresia, and pulmonary atresia to increase the diminished blood flow to the pulmonary circulation.
		The patency of the ASD is important in various congenital defects, such as tricuspid atresia, pulmonary atresia, hypoplastic left heart, and the transposition of the great arteries.
	perfline.com /student/palliative.html (960 words)

	Mitral Stenosis
		Mitral stenosis was present in all, with parachute deformity in 12 patients.
		Nine heart specimens with aortic and mitral atresia (group 1) were studied and compared with 19 hearts with aortic atresia and mitral stenosis (group 2) (EFE of the LV was present in all cases) and 10 normal hearts.
		Mitral valve replacement and bypass are high-risk operations in the infant with severe mitral stenosis.
	www.pediheart.org /searches/topic/ms.htm (5439 words)

	Cardiovascular System - DIAGNOSIS OF CONGENITAL ABNORMALITIES - THE 18-23 WEEKS SCAN
		Another useful hint is the demonstration that the tricuspid and mitral valves attach at the same level at the crest of the septum.
		At a closer scrutiny, however, the movement of the mitral valve appears severely impaired to non-existent, ventricular contractility is obviously decreased, and the ventricle often displays an internal echogenic lining that is probably due to endocardial fibroelastosis.
		Differential diagnosis from pulmonary atresia with intact ventricular septum and a regurgitant tricuspid valve or isolated tricuspid valve insufficiency is difficult and may be impossible antenatally.
	www.thefetus.net /html/chapter-04/heart/heartfmf-complete.html (7809 words)

	Single ventricle defects - My Child Has - Children's Hospital Boston
		Tricuspid atresia: A defect that occurs when there is abnormal development of the tricuspid valve, which prevents blood from passing from the right atrium to the right ventricle as it should.
		Mitral valve atresia: The mitral valve separates the left atrium from the left ventricle.
		When there is mitral valve atresia, the mitral valve does not develop properly and blood from the left atrium does not flow to the left ventricle.
	www.childrenshospital.org /az/Site1941/mainpageS1941P0.html (973 words)

	eMedicine - Tricuspid Atresia : Article by P Syamasundar Rao, MD
		In contrast, in those with tricuspid atresia type II (transposition of the great arteries), a larger portion of the blood goes through the ductus arteriosus into the descending aorta; therefore, the flow across the aortic isthmus is minimal, which accounts for the higher incidence of aortic coarctation in this subset of patients.
		In the latter types, because of ventricular inversion, the atretic morphologic tricuspid valve is left sided; therefore, the pathophysiology is that of mitral atresia with consequent left-to-right shunting of pulmonary venous return.
		Causes: The etiology of tricuspid atresia is unknown.
	www.emedicine.com /ped/topic2550.htm (13087 words)

	Mosby Periodicals Online
		Aortic valve atresia is the anatomic hallmark of the largest group of neonates born with a cardiac malformation with single ventricle physiology.
		A study of outcomes in a large group of neonates with aortic atresia could be of value to perinatologists, neonatologists, pediatric cardiologists and surgeons, and others involved in the support and management of families with fetuses and neonates with aortic atresia.
		Among the goals of the study were to define the spectrum of cardiac morphology associated with aortic valve atresia, to define the spectrum of surgical approaches currently used and their respective outcomes, and to undertake analyses leading to inferences concerning the impact of patient characteristics and treatment strategies on outcome.
	www.chssdc.org /jtcvsarticles/jacobs.html (4508 words)

	Types of CHD and their Descriptions
		Therefore, the mitral and aortic valves are usually tiny or absent, as are the the left ventricle and the first part of the aorta.
		mitral valve prolapse - an abnormality of the valve between the left atrium and left ventricle of the heart that causes backward flow of blood from the left ventricle into the left atrium.
		Mitral valve prolapse occurs more often in women than men; it often occurs in people who have no other heart problems, and the condition may be inherited.
	www.congenitalheartdefects.com /typesofCHD.html (7798 words)

	[No title] (Site not responding. Last check: 2007-10-24)
		.I 240.W mitral atresia associated with pulmonary venous anomalies.
		pulmonary venous anomalies were observed in 5 among 29 specimens with mitral atresia.
		in 3 (group i), mitral atresia and premature closure of the foramen ovale coexisted.
	www.cs.utexas.edu /ftp/pub/inderjit/Data/Text/med/0.239 (154 words)

	Valvular Heart Disease Basics - Page 1
		', CAPTION, 'mitral valve');" ONMOUSEOUT="return nd();">mitral valve and
		Depending on which valve is affected, the diagnosis may be aortic stenosis, mitral stenosis, pulmonic stenosis or tricuspid stenosis.
		', CAPTION, 'Mitral valve prolapse');" ONMOUSEOUT="return nd();">Mitral valve prolapse.
	heart.healthcentersonline.com /heartvalve/valvulardiseaseoverview.cfm (1056 words)

	Atrioventricular
		Tricuspid atresia is present when the left-sided atrium is connected to the ventricular mass, and mitral atresia is present where the right atrium is connected to the ventricular mass.
		This is because the ventricular valves are virtually always associated with their appropriate ventricles, so that the left ventricular valve (mitral valve) is virtually always connected to the left ventricle, while the right ventricular valve is virtually always connected to the right ventricle.
		The reason for this very strong association is that the ventricular valves are embryologically derived in large part from their corresponding ventricle, the left ventricle forming the great majority of the left ventricular valve, while the right ventricle forms the great part of the right ventricular valve.
	www.pediheart.org /practitioners/anatomy/atrioventricular.htm (1484 words)

	Congenital Heart Disease - Article
		Atresia: The valve is not formed so that there is not communication for blood to pass from one chamber to another.
		Pulmonary valve atresia is a defect where a solid sheet of tissue forms instead of the pulmonary valve.
		Tricuspid atresia is a defect where a solid sheet of tissue forms instead of the tricuspid valve.
	goldbamboo.com /topic-a22074.html (4524 words)

	Congenital Heart Disease - All Sections (printer-friendly)
		The pulmonary valve is in the right side of the heart, between the right ventricle and the entrance to the pulmonary artery that carries blood to the lungs.
		The mitral valve is in the left side of the heart, between the left atrium and the left ventricle.
		The aortic valve is in the left side of the heart, between the left ventricle and the entrance to the aorta, the artery that carries blood to the body.
	www.nhlbi.nih.gov /health/dci/Diseases/chd/chd_all.html (4294 words)

	[No title] (Site not responding. Last check: 2007-10-24)
		The majority of the abnormalities was found in hearts with a patent mitral valve.
		In 79% of the hearts with mitral atresia, the septal surface was concave instead of convex to the right ventricular lumen and the direct tendinous attachments of the septal leaflet replaced by a multitude of freestanding papillary muscles.
		The subvalvar apparatus is different in hearts with mitral atresia, whereas dysplasia of the leaflets occurs more often together with mitral stenosis.
	www.elsevier.com /cdweb/journals/10107940/articles/12/4/S101079409700184.abstract.en (232 words)

	Chapter 29- Oliver W. Caminos, M.D. (Site not responding. Last check: 2007-10-24)
		Aortic valve atresia is a relatively rare disease which usually determine death in the first few weeks of life.
		Catherization and angiography is the only way to be categorical in achieving a definitive diagnosis, evaluate the patients hemodynamic status and to rule out associated malformations.
		The condition of the mitral valve (sufficient or insufficient) is difficult to be assessed, which makes ultrasound of limited value in this disease.
	www.redtail.net /owc/29.html (228 words)

	Chapter 43- Oliver W. Caminos, M.D. (Site not responding. Last check: 2007-10-24)
		In this regard, for example, the commonest type of mitral atresia is the one, associated to aortic atresia which may have a clinical presentation similar to isolated atresia of the aortic valve.
		The patient with pure aortic atresia otherwise, will most of the time have a marked atrophy of the mitral valve structures, and as in the previous case, the clinical picture will depend upon the significance of the left to right communication and the degree of pulmonary hypertension.
		In all of these entities, the great arteries are normally located and the main anatomical feature is given by a significant atrophy or hypoplasia from the left mitral valve through the aortic arch.
	www.redtail.net /owc/43.html (178 words)

	THE MERCK MANUAL, Sec. 19, Ch. 261, Congenital Anomalies
		Cardiomegaly, pulmonary venous congestion, and absence of LV activity on ECG as manifested by lack of a septal Q wave or positive left precordial R waves on ECG strongly suggest the diagnosis, which is confirmed by demonstration of severe hypoplasia of left heart structures on echocardiography.
		However, newborns with pulmonary valve atresia and ductus arteriosus-dependent pulmonary blood flow present with severe cyanosis and a continuous murmur of ductal flow.
		Catheterization and angiography are unnecessary unless significant associated defects (eg, aortic stenosis, aortic insufficiency, mitral valve disease, ventricular septal defect) are present or there is evidence that the narrow segment is not in the usual location just distal to the left subclavian artery or is longer than usual.
	www.merck.com /mrkshared/mmanual/section19/chapter261/261b.jsp (4526 words)

	Pathology of Congenital Heart Disease (Site not responding. Last check: 2007-10-24)
		In pulmonary atresia the patent ductus arteriosus is small because in-utero the blood shunts left-to-right in small volumes to the lungs.
		Embryology: One theory suggests decreased blood flow in the aorta leading to coarctation, another theory proposes that coarctation is the result of a lasso ring of ductal tissue surrounding the aortic arch, consequently restricting after birth leading to coarctation of the aorta.
		The left ventricle is small with or without mitral atresia and with or without aortic valve atresia.
	www.pediatriccardiology.uchicago.edu /MP/Pathology/pathology.htm (3545 words)

	Hypoplastic Left Heart Syndrome
		Hypoplastic left heart syndrome is characterized by the underdevelopment (hypoplasia) of the chambers on the left side of the heart (i.e., left atrium and ventricle).
		In addition, the mitral valve, which connects these chambers to each other, is usually abnormally narrow (stenosis) or closed (atresia) and the aortic valve, which connects the heart to the major vessels that lead from the lungs (ascending aorta), may also be narrow or closed.
		Mitral Valve Stenosis is a rare heart defect that may be present at birth (congenital) or acquired.
	hw.healthdialog.com /kbase/nord/nord178.htm (1921 words)

	Cardiology Advisor 2005.2: Hypoplastic Left Heart Syndrome
		The mitral valve, which normally separates the upper and lower left heart chambers, is either poorly developed (mitral stenosis) or not formed at all (mitral atresia).
		The valve from the left ventricle to the aorta, the artery that normally carries blood from the left ventricle to the rest of your body, is either extremely small (aortic stenosis) or fails to develop (aortic atresia).
		The result is that the left side of the heart (left atrium, left ventricle, and aortic valve) does not work and is unable to pump blood to the body.
	www.fairview.org /healthlibrary/content/ca_hypoplas_car.htm (446 words)

	HTML document for the World Wide Web (Site not responding. Last check: 2007-10-24)
		The mitral valve is tri-leaflet with a characteristic cleft in the anterior leaflet.
		The condition is characterized by underdevelopment of the left side of the heart with aortic valve atresia, a hypoplastic ascending aorta, and a hypoplastic/atretic mitral valve.
		In tricuspid atresia there is no opening from the RA to the RV which results in right heart hypoplasia.
	www.indyrad.iupui.edu /public/lectures/HTML/chest-rm/cvcong.htm (6863 words)

	[No title] (Site not responding. Last check: 2007-10-24)
		Between 1961 and 1995, 158 patients with single-ventricle physiology, including tricuspid atresia and hypoplastic left heart syndrome, were referred to the authors' institute, and underwent 260 surgical interventions.
		Multivariate analysis identified systemic ventricular outflow tract obstruction, mitral atresia, situs ambiguus, and pulmonary vein drainage tract obstruction as independent prognostic factors for overall survival.
		Visceral heterotaxy was the only independent risk factor for lack of application or failure (death or take-down within 30 days of operation) of univentricular or biventricular repair.
	www.elsevier.com /cdweb/journals/09672109/articles/5/5/S096721099700052.abstract.en (192 words)

	Cardiac Pathology
		Incomplete closure or absence of a mitral valve.
		Valvular pulmonary atresia is the failure of the development of the pulmonary valve and normal development of the right ventricular chamber.
		Arterial pulmonary atresia is failure of embryologic development of the main pulmonary artery.
	www.heartpumper.com /cardiac_pathology.html (1642 words)

	Imaginis - Heart Disease - Types of Congenital Heart Defects
		Immediate or delayed surgery is typically necessary to replace or repair the tricuspid valve, close the atrial septal defect (if present), repair the damage to the ventricle, and reduce the size of the atrium (if enlarged).
		Infants with pulmonary atresia typically have other defects, including patent ductus arteriosus, atrial septal defect, other right side defects, or tetralogy of fallot.
		Tricuspid atresia: Permanent closure of the tricuspid valve (located between the right atrium and right ventricle) before birth.
	imaginis.com /heart-disease/chd_types.asp (1412 words)

	Mitral valve stenosis (Site not responding. Last check: 2007-10-24)
		Mitral valve stenosis news vertical portal can now be syndicated quickly and easily using our new Really Simple Syndication feeds.
		It is believed that mitral valve repair with......
		For any further understanding that could lead to the prevention, treatment, and/or cure of the disorders, we recommend that affected individuals seek the advice or counsel of his or her own personal physician(s).
	mitral-valve-stenosis.diseasemap.com (341 words)

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