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Topic: Ventricle

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	Third Ventricle (Site not responding. Last check: 2007-11-07)
		The third ventricle is one of a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord.
		The third ventricle is a median (midline) cavity in the brain that is bounded by the thalamus and hypothalamus on either side.
		The ventricles are filled with cerebrospinal fluid, which is formed by structures called choroid plexuses located in the walls and roofs of the ventricles.
	www.psyweb.com /Brain/3vent.jsp (120 words)

	Ventricle (heart) - Wikipedia, the free encyclopedia
		In the heart, a ventricle is a chamber which collects blood from an atrium (another heart chamber) and pumps it out of the heart.
		In a four-chambered heart, such as that in humans, there are two ventricles: the right ventricle pumps blood into the pulmonary circulation for the lungs, and the left ventricle pumps blood into the systemic circulation for the rest of the body.
		Ventricles have thicker walls than the atria, and thus can create the higher blood pressure.
	en.wikipedia.org /wiki/Ventricle_(heart) (138 words)

	Dbl. Inlet Ventricle
		Double inlet ventricle is a congenital cardiac malformation in which both atria connect to only one ventricular chamber by either two separate atrioventricular valves or a common atrioventricular valve[198, 196, 195].
		The ventricle to which both atrioventricular valves or common atrioventricular valve connects is usually well formed, whereas the ventricle not receiving the great majority of the venous return to the heart is often rudimentary.
		The essence of double inlet left ventricle is that, although there has been expansion of the right atrioventricular junction, the right atrial myocardium retains its connection with the dominant left ventricle, while the right ventricle is incomplete and rudimentary.
	www.pediheart.org /practitioners/defects/atrioventricular/DILV.htm (1905 words)

	Single Ventricle Anomalies, Cincinnati Children's Hospital Medical Center
		Whenever there is only one ventricle large enough to do a normal job of pumping blood, we need to configure the circulation to maximize the efficiency of this single ventricle without overworking it.
		The single ventricle must not be overworked for a long period of time, in terms of either having to pump too much blood or pump at too high a pressure.
		Whatever is needed in the newborn period, the aim is typically to balance the blood flow between the lungs and the body, achieving stable oxygen levels and adequate heart function.
	www.cincinnatichildrens.org /health/heart-encyclopedia/anomalies/sv.htm (1692 words)

	Lateral Ventricle
		The lateral ventricle are one of a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord.
		The lateral ventricles are in the cerebral hemispheres.
		The lateral ventricles communicate with the third ventricle through what is called the interventricular foramen (opening).
	www.psyweb.com /Brain/lvent.jsp (101 words)

	mmdbrain - Extract the lateral ventricle from an MRI image of the brain.
		The ventricle is enhanced using an opening with a disk of radius 10 followed by a reconstruction.
		Ventricle detection II The result of the open by reconstruction is subtracted from the original image.
		Finally, the ventricle is selected as the connected object with area larger than 70 pixels.
	www.mmorph.com /html/mmdemos/mmdbrain.html (200 words)

	Ventricle - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-11-07)
		In anatomy, a ventricle is a part of the body filled with fluid.
		For the pumping chambers of the heart, see Ventricle (heart).
		For the ventricles of the brain, see ventricular system.
	en.wikipedia.org /wiki/Ventricle (97 words)

	Ventricle and a half
		The ventricle-and-a-half repair is used when there is essentially a single functional ventricle, and the dysfunctional ventricle, although not considered of sufficient size to handle an entire cardiac output, is considered to be of sufficient size to handle about half the cardiac output.
		The operation consists of a superior cavopulmonary anastomosis combined with the connection of the dysfunctional ventricle to the pulmonary artery through either a native or homograft vessel.
		A fenestrated ventricle-and-a-half repair can be performed in patients with significant risk factors, and consists of a superior cavopulmonary anastomosis with connection of the dysfunctional ventricle to the pulmonary arteries, along with a 4 - 5 mm snared fenestration in the atrial septum, analogous to that performed for the lateral tunnel fenestrated Fontan operation.
	www.pediheart.org /practitioners/operations/ventHalf.html (1279 words)

	Double Inlet Left Ventricle - What is it? (Site not responding. Last check: 2007-11-07)
		In most forms of Double Inlet Left Ventricle, the positions of the great arteries (pulmonary artery and aorta) and the left and right ventricles are the reverse of the normal heart.
		The right ventricle is frequently small and both the mitral and tricuspid valve open into the enlarged left ventricle, which is on the right-hand side of the body.
		Double Inlet Left Ventricle is one of the so-called Single Ventricle heart defects, as there is effectively only one pumping chamber in the heart.
	www.pted.org /htms/dilv1.htm (124 words)

	Glossary of Cardiology Terms
		Sometimes this term is used to denote the aortic valve, which is the valve that prevents back-flow of blood from the aorta into the left ventricle.
		Ventricle: The chamber of the heart that is responsible for pumping blood out to the rest of the body.
		The right ventricle pumps deoxygenated blood to the lungs via the pulmonary artery; the left ventricle pumps oxygenated blood to the body via the aorta.
	www.hhmi.org /biointeractive/vlabs/cardiology/content/cg/glossary.html (638 words)

	TR³ISVR Procedure (Site not responding. Last check: 2007-11-07)
		Though it is possible, restoring the ventricle to the optimal size without the use of a Mannequin™ is extremely difficult.
		Restoring the proper shape of the ventricle helps restore this orientation and enables the ventricle and mitral valve to function more efficiently and reduces the amount of work required by the papillary muscles.
		As the shape of the ventricle becomes distorted, this force vector diminishes, and its direction moves away from the aortic valve.
	www.chasemedical.com /hc_svr_trisvr_size.htm (588 words)

	Treatment of Single Ventricle in Children at Mayo Clinic in Rochester, Minn. (Site not responding. Last check: 2007-11-07)
		Single ventricle is an uncommon, but not rare, congenital heart malformation in which one ventricle (pumping chamber) of the heart is either severely underdeveloped (hypoplastic) or absent.
		A number of different malformations exist in which only single functional ventricle is present, including tricuspid atresia, mitral atresia, double inlet left ventricle, pulmonary atresia with intact ventricular septum, hypoplastic left heart syndrome and common ventricle associated with the asplenia or polysplenia (heterotaxy) syndromes.
		Children born with single ventricle are usually diagnosed in the first weeks of life and may soon show evidence of either too little blood reaching the lungs (cyanosis or blueness) or too much (congestive heart failure).
	www.mayoclinic.org /pediatrics-rst/ventricle.html (417 words)

	Aortic Stenosis - CardiologyChannel
		The aortic valve is located between the left ventricle, or lower chamber of the heart, and the largest artery (aorta).
		The left ventricle pumps oxygen-rich blood into the aorta, which carries it to the brain and the rest of the body.
		When the aortic valve becomes stenotic, the ability of the left ventricle to pump blood out of the heart to the aorta and other arteries is impaired.
	www.cardiologychannel.com /aorticstenosis (481 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		Ventricle: One of two lower chambers of the heart.
		The right ventricle pumps oxygen-poor blood through the pulmonary artery and to the lungs.
		The left ventricle pumps oxygen-rich blood through the aorta and to the rest of the body.
	www.heartcenteronline.com /myheartdr/Common/articles.cfm?ARTID=473 (39 words)

	The Turkish Journal of Pediatrics
		Double-chambered right ventricle (DCRV) is a congenital cardiac anomaly in which the right ventricle is divided into two chambers by anomalous muscle bundles that cross the right ventricular cavity[1-4].
		Hypertrophic anomalous muscle bands in the right ventricle were noted in 1909, but "doublechambered" right ventricle was first described in 1962 by Lucas et al.[6].
		Associated cardiac anomalies are common in DCRV and include ventricular septal defect (VSD) in 56% to 90% of cases, pulmonary stenosis, atrial septal defect, cor triatriatum, and aortic and subaortic stenosis[1,3,7].
	tjp.dergisi.org /text.php3?id=43 (916 words)

	University of Miami School of Medicine - Glossary - Ventricle, brain
		Ventricle, brain: One of a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord.
		Lateral ventricles: The lateral ventricles are in the cerebral hemispheres.
		The fourth ventricle is the most inferior (lowest) of the four ventricles of the brain.
	www.med.miami.edu /glossary/art.asp?articlekey=9161 (230 words)

	TheFetus.net - Double inlet single ventricle-Kathleen M. Tate, MD, Ann Kavanaugh-McHugh, MD, Philippe Jeanty, MD, PhD
		A large pulmonary artery was connected to the ventricle and a smaller, hypoplastic aorta appeared to arise from a rudimentary outflow chamber (fig.
		In normal development of the heart, the left ventricle trabecular component is formed from the inlet segment of the primitive ventricle of the primary heart tube, while the right ventricle trabecular component forms from the outlet segment of the bulbus.
		Without further surgery to separate the systemic and pulmonary circulations, individuals with double inlet left ventricle are subject to the complications of cyanosis and chronic ventricular volume overload, and survival beyond the second decade of life is rare.
	www.thefetus.net /page.php?id=41 (2174 words)

	Neonatal Cerebral Ventricle Volume: A Comparison of 3D Ultrasound and MRI (Site not responding. Last check: 2007-11-07)
		Enlargement of the cerebral lateral ventricles is the most consistent neurostructural abnormality observed in schizophrenia and is thought to arise during early brain development.
		Ventricle enlargement in the premature infant is associated with poor neurodevelopmental outcome.
		To assess the validity of ventricle volume measures obtained with 3D ultrasound, we compared the volumes obtained by 3D ultrasound with magnetic resonance imaging (MRI) in 7 neonates.
	www.ia.unc.edu /abstracts/ultrasound-icsr.html (233 words)

	Cardiac Cycle and monitoring (Site not responding. Last check: 2007-11-07)
		The pressures in the atrium and ventricle are around 5mmHg and rise slightly as blood enters the heart, distending it; as blood is flowing from the atrium to the ventricle, the pressure in the atrium is fractionally higher than in the ventricle.
		When the pressure in the left ventricle exceeds 80mmHg, it has become greater than the pressure in the aorta so the aortic valves open and blood leaves the ventricle, but the force which the ventricle exerts is so high that the pressure in the ventricle and root of the aorta rises to 120mmHg.
		After the aortic valves have closed, the ventricle is a closed chamber, because the mitral valve is still closed, and the muscle fibres in its wall are relaxing, so the pressure drops rapidly during this phase of isovolumetric, or isometric, relaxation which lasts for around 80ms.
	grapevine.abe.msstate.edu /classes/abe4803/2004/heart_2/ccycle.html (1007 words)

	AB Ventricle (Site not responding. Last check: 2007-11-07)
		The AB5000™ Ventricle, a major component of the AB5000™ Circulatory Support System, is a pneumatically driven blood pump.
		The Ventricle is located next to the body (paracorporeal) and can take over the pumping function of the natural heart allowing the muscles to rest and recover.
		Connection of the Ventricle to the patient is accomplished by connecting the pump to cannulae, or tubes, implanted in the patient's heart.
	www.abiomed.com /products/heart_recovery/ab5000/ab5000_ventricle.cfm (227 words)

	August 23, 1999
		Scientists propose that the size of the ventricle (a physiological feature of the brain determined by an X-ray) may be associated with an abnormal EEG (brain wave) reading.
		The size of the ventricle was determined for elderly patients, and then the EEG was labeled as normal (0) or abnormal (1).
		Use the model given above to calculate the probability of having an abnormal EEG when the ventricle size is 25 and when the ventricle size is 80.
	www.stat.lsu.edu /EXSTWeb/StatLab/EXST7015Fall2002/lab7.htm (163 words)

	JPMA... (Site not responding. Last check: 2007-11-07)
		After entering the right lateral ventricle, a cauliflower-like mass was observed in the lateral ventricle protruding out of the foramen of Monro.
		At operation the previous gyrotomy was reopened and the remaining tumor was excised from the third ventricle using the dilated foramen of Monro.
		Although CPP is one of the neoplasms frequently observed to occur primarily within the ventricular system, it rarely involves the third ventricle; its incidence is 10% or less of all CPPs.5-7 These lesions typically manifest with macrocephaly and signs of raised intracranial pressure.
	jpma.org.pk /JPMA/11Nov03/studentGiant.htm (810 words)

	ventricle (Site not responding. Last check: 2007-11-07)
		The ventricle is the thick-walled muscular main pumping chamber of the heart.
		There are two, the right and left ventricles; they pump to the lungs and body repectively.
		The ventricles receive blood from the atria via the atrioventricular valves, and eject blood forcefully through the pulmonic valve (right ventricule) and the aortic valve (left ventricle).
	www.sleeptight.com /EncyMaster/V/ventricle.html (55 words)

	U-M CVC - Complex Single Ventricle (Site not responding. Last check: 2007-11-07)
		The term "complex single ventricle" and "uni-ventricular heart" are used to describe a group of rare heart defects, which have in common, a large single pumping chamber or ventricle instead of the usual two.
		Complex single ventricle is a serious problem and without surgery, most children would not be able to survive the first year of life.
		Physical findings: Most babies with complex single ventricle are born at term and are a normal weight and length (since before birth the baby’s oxygen comes from the mother).
	www.med.umich.edu /cvc/mchc/parcomp.htm (935 words)

	lec25-98 (Site not responding. Last check: 2007-11-07)
		There is a pressure change in the ventricle, due to the stretching of the ventricle by the entering blood.
		The degree of the pressure increase is a function of the volume of blood in the ventricle and the elastic properties of the ventricle walls.
		The ventricle is a bit like a balloon: as it fills, the elastic walls expand, creating pressure from the heart walls not due to active contraction.
	grapevine.abe.msstate.edu /classes/abe4803/2002/heart_3/lec25_98.html (1021 words)

	Health A to Z Index (Site not responding. Last check: 2007-11-07)
		After the left ventricle contracts, the aortic valve closes and the mitral valve opens, to allow blood to flow from the left atrium into the left ventricle.
		Tricuspid atresia defect is characterized by a small right ventricle, a large left 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 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.muschealth.com /health_info/health_atoz/atoz.htm?pageid=P00210 (1654 words)

	TheFetus.net - Double-outlet right ventricle, subpulmonary stenosis and complete atrioventricular canal-Raúl Martínez ... (Site not responding. Last check: 2007-11-07)
		This common atrioventricular valve may be incompetent, and systolic blood regurgitation from the ventricles to the atria may give rise to congestive heart failure.
		Differential diagnosis: Prenatal diagnosis of double-outlet right ventricle can be made reliably in the fetus, but differentiation from other conotruncal anomalies can be very difficult, especially with tetralogy of Fallot and transposition of great arteries with ventricular septal defect.
		Because the fetal heart works as a common chamber where the blood is mixed and pumped, the presence of double-outlet right ventricle is not expected to be a cause of cardiac failure.
	www.thefetus.net /page.php?id=1133 (669 words)

	Colloid Cyst Of The Third Ventricle (Site not responding. Last check: 2007-11-07)
		Weisberg LA. Clinical-computed tomographic correlations in colloid cysts of the third ventricle.
		MR and CT of masses of the anterosuperior third ventricle.
		Colloid cyst of the third ventricle presenting as a ring-enhancing lesion on computed tomography.
	home.earthlink.net /~radiologist/tf/062402.htm (199 words)

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