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Topic: Vena cava

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Inferior vena cava

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	Venous
		A persistent left superior vena cava is the most common form of anomalous venous drainage involving the superior vena cava and represents persistence of the left horn of the embryonic sinus venosus, which normally involutes during normal development to become the coronary sinus.
		Aneurysmal dilatation of the superior vena cava is recognized as being an acquired lesion of the heart and is rarely seen in children.
		The persistent superior vena cava usually connects to the left upper corner of the left atrium between the attachment of the left atrial appendage and the left pulmonary veins.
	www.pediheart.org /practitioners/defects/venous.htm (2042 words)

	Gray, Henry. 1918. Anatomy of the Human Body. Page 530
		The inferior vena cava, larger than the superior, returns the blood from the lower half of the body, and opens into the lowest part of the atrium, near the atrial septum, its orifice being directed upward and backward, and guarded by a rudimentary valve, the valve of the inferior vena cava (Eustachian valve).
		The blood entering the atrium through the superior vena cava is directed downward and forward, i.e., toward the atrioventricular orifice, while that entering through the inferior vena cava is directed upward and backward, toward the atrial septum.
		The valve of the inferior vena cava (valvula venœ cavœ inferioris [Eustachii]; Eustachian valve) is situated in front of the orifice of the inferior vena cava.
	www.bartleby.com /107/pages/page530.html (424 words)

	Vena Cava Ligation
		Caval ligation is a salvage procedure reserved for ferrets with large malignancies on the right adrenal gland which have either invaded or severely compromised the posterior vena cava - the largest vein in the body.
		As the right adrenal sits directly on the cava, it is not uncommon that aggressive tumors on this side will either grow to a size where they block the flow through the cava, or directly invade the vena cava, compromising and ultimately impeding blood return to the heart.
		This phenomenon is the basis for vena caval ligation.
	www.miamiferret.org /fhc/vena_cava.htm (499 words)

	Vena Cava Filters
		Vena cava filters are metallic, umbrella-shaped devices that catch blood clots to prevent them from traveling to the lungs and causing a pulmonary embolism.
		Vena cava filters usually are used when drug therapy, such as treatment with blood-thinners, has failed or is considered inadequate, or when drug therapy would cause other dangerous medical conditions.
		Vena cava filters are also inserted to protect trauma patients from pulmonary embolism associated with their injuries.
	www.interventionalrad.com /images/uploaded/blueisland/vcf.cfm (630 words)

	Superior Vena Cava Syndrome - Lungs: pulmonary and respiratory health and medical information produced by doctors
		The superior vena cava syndrome is the group of symptoms that result from compression of the large vein (superior vena cava) that transmits blood to the heart.
		The superior vena cava syndrome is characterized by swelling of the face, neck and/or arms with visible widening (dilation) of the veins of the neck.
		Non-cancer causes of the superior vena cava syndrome include infections (such as tuberculosis, fungus, and syphilis), benign tumors (such as teratomas, thymoma, dermoid cyst), aortic aneurysm, pericarditis, sarcoidosis, irradiation treatment to the chest, air in the chest (pneumothorax), and complication of central line catheters and congenital heart surgery.
	www.medicinenet.com /superior_vena_cava_syndrome/article.htm (617 words)

	Assessment of Flow Events at the Ductus VenosusInferior Vena Cava Junction and at the Foramen Ovale in Fetal Sheep by ...
		junction of the ductus venosus with the inferior vena cava,
		the junction of the ductus venosus and inferior vena cava, pulsed
		Velocities at the ductus venosus and the inferior vena cava
	circ.ahajournals.org /cgi/content/full/93/4/826 (4536 words)

	Inferior vena cava - Wikipedia, the free encyclopedia
		The vein that carries de-oxygenated blood from the upper half of the body is the superior vena cava.
		Since the inferior vena cava is primarily a right-sided structure, unconconscious pregnant females should be turned on to their left side (the recovery position), to relieve pressure on it and facilitate venous return.
		In the embryo, the IVC and right atrium are separated by the Eustachian valve, also known in latin as the valvula venae cavae inferiore (valve of the inferior vena cava).
	en.wikipedia.org /wiki/Inferior_vena_cava (550 words)

	What is Vena Cava Interruption? Filter Placement Procedure - Chapter 11: Indications and Techniques of Inferior Vena ...
		Vena cava interruption is the placement of a filter in the inferior vena cava to trap clots and prevent pulmonary embolism (clot in lung).
		Methods have been developed that allow vena caval interruption devices to be placed directly into the vena cava through the femoral (in the thigh) or jugular (in the neck) vein.
		Note that the inferior vena cava is the large vessel in the center of the figure.
	www.venous-info.com /handbook/hbk11a.html (309 words)

	Encyclopedia: Inferior vena cava (Site not responding. Last check: 2007-10-14)
		The vein that carries de-oxyginated blood from the upper half of the body is the superior vena cava.
		The superior vena cava (also known as the anterior vena cava) is a large but short vein that carries de-oxygenated blood from the upper half of the body into the heart.
		Obstruction of the inferior vena cava by retroperitoneal lymphoma with generalized edema of the lower thorax, abdomen, pelvis and lower extremities results in delayed clearance and persistence of Tc-99m MDP from the soft tissues.
	www.nationmaster.com /encyclopedia/Inferior-vena-cava (708 words)

	s030122a - Superior Vena Cava Syndrome - Etiology & Diagnosis
		Abstract: Superior vena cava (SVC) syndrome is a critical condition in which an intrathoracic mass lesion compresses the SVC and promotes the development of head and upper body edema and cyanosis.
		Thrombosis of the superior vena cava associated with the use of intravascular devices or extraluminal obstruction from malignancy is now recognized as an important pathophysiologic process in the syndrome.
		Computerized tomography (CT) of the chest confirmed superior vena cava obstruction and localized the level of obstruction in all six patients in whom it was done.
	www.emory.edu /WHSCL/grady/amreport/litsrch02/s030122a.html (2665 words)

	Superior Vena Cava Syndrome: (Site not responding. Last check: 2007-10-14)
		Superior vena cava syndrome (SVCS) is a collection of symptoms caused by the partial blockage of the vein that carries blood from the head, neck, chest, and arms to the heart.
		Nearly 95% of superior vena cava syndrome cases are attributed to cancer, with the most common cause being small cell lung cancer, followed by squamous cell lung cancer, adenocarcinoma of the lung, non-Hodgkin's lymphoma, and large cell lung cancer.
		Superior vena cava syndrome is rare in children and appears in 12% of children with cancer in the chest.
	www.acor.org /cnet/62844.html (2380 words)

	Research Results For Vena Cava (Site not responding. Last check: 2007-10-14)
		The vena cava is a large vein that runs along the right side of the body.
		vena cava is the great vein that returns the blood from the head, arms and upper body to the right atrium of the heart.
		The inferior vena cava, which is larger than the superior vena cava, returns blood from the lower body and legs.
	www.probertencyclopaedia.com /cgi-bin/res.pl?keyword=Vena+Cava&offset=0 (120 words)

	BDG Shunt
		The cavo-atrial incision is extended into the superior vena cava with a gentle posterior spiral to a point directly opposite the rightward extension of the right pulmonary artery incision.
		The superior vena cava should invariably be cannulated when reduced-flow cardiopulmonary bypass is used, as would be done for a bi-directional Glenn operation.
		The cephalic end of the superior vena cava is anastomosed to the superior incision on the right pulmonary artery, and the cardiac end to the inferior incision, using 7-0 Maxon.
	www.pediheart.org /practitioners/operations/BDG.html (1936 words)

	Vena cava filter (Site not responding. Last check: 2007-10-14)
		A vena cava filter is a device inserted into a major vein to prevent a blood clot from entering the lungs.
		The purpose of a vena cava filter is to prevent a blood clot from potentially traveling to the lungs.
		Vena cava filters are usually inserted in to prevent PE caused by a thrombosis in a deep vein (DVT).
	www.healthatoz.com /healthatoz/Atoz/ency/vena_cava_filter.jsp (627 words)

	The Cancer Information Network
		A rare cause of superior vena cava syndrome is an infection of the mediastinum (in the chest), that causes thickening and hardness of the mediastinal tissues.
		The superior vena cava returns blood from the upper body to the heart, and the inferior vena cava returns the blood from the lower part of the body.
		The cause, diagnosis, and treatment of superior vena cava syndrome in children is not the same as it is in adults.
	www.cancerlinksusa.com /lung/svc.htm (1738 words)

	Vena cava definition - Medical Dictionary definitions of popular medical terms
		Vena cava: The superior vena cava is the large vein which returns blood to the heart from the head, neck and both upper limbs.
		Diagnosis of superior vena cava syndrome is supported by identifying a cause for the superior vena cava syndrome, typically requiring X- ray imaging or CAT or MRI scanning.
		The outlook for patients with the superior vena cava syndrome clearly depends on the underlying cause of the syndrome.
	www.medterms.com /script/main/art.asp?articlekey=5974 (606 words)

	Search Results for vena - Encyclopædia Britannica
		The inferior vena cava is formed by the coming together of the two major veins from the legs, the common iliac veins, at the level of the fifth lumbar vertebra, just below the small of the back.
		The most common abnormalities of the venae cavae, the major veins returning venous blood to the right side of the heart, are a persistent left superior vena cava (normally there is only one superior...
		The inferior vena cava is a large, valveless, venous trunk that receives blood from the legs, the back, and the walls and contents of the abdomen and pelvis.
	www.britannica.com /search?query=vena&submit=Find&source=MWTEXT (346 words)

	inferior vena cava agenesis - General Practice Notebook (Site not responding. Last check: 2007-10-14)
		Agenesis of the inferior vena cava is associated with multiple congenital heart defects.
		Hence, at birth the inferior vena cava flows into the azygous system and thence the superior vena cava.
		The hepatic section of the inferior vena cava, derived from the embryonic vitelline veins, enters the right atrium in a similar fashion to a normal inferior vena cava.
	www.gpnotebook.co.uk /cache/-946208710.htm (161 words)

	Superior vena cava syndrome
		Since superior vena cava syndrome (SVCS) was first described by William Hunter in 1757, the spectrum of underlying conditions associated with it has shifted from tuberculosis and syphilitic aneurysms of the ascending aorta to malignant disorders.
		Knowledge of the anatomy of the superior vena cava (SVC) and its relationship to the surrounding lymph nodes is essential to understanding the development of the syndrome.
		The treatment of superior vena cava syndrome (SVCS) depends on the etiology of the obstruction, the severity of the symptoms, the prognosis of the patient, and patient preferences and goals for therapy.
	imsdd.meb.uni-bonn.de /cancernet/304708.html (3115 words)

	Superior Vena Cava Syndrome
		Superior vena cava syndrome is a collection of symptoms that can occur in patients who have lung cancer, non-Hodgkin's lymphoma or other cancers.
		Other rare causes of superior vena cava syndrome include metastatic germ cell tumors, metastatic breast cancer, colon cancer, Kaposi's sarcoma, cancer of the esophagus, fibrous mesothelioma (cancer of the epithelium), Bechet's syndrome (a disease of the immune system), thymus tumor, thyroid tumor, Hodgkin's disease, and sarcoidosis (disease of the lymph nodes that acts like tuberculosis).
		The superior vena cava is thin-walled, and the blood is under low pressure.
	www.medhelp.org /lib/cancernet/504708.htm (2202 words)

	Inferior Vena Cava Filter (Site not responding. Last check: 2007-10-14)
		An Inferior vena cava filter is a tiny metal device that looks like an opened umbrella without the material.
		It is inserted into the inferior vena cava (the large vein which returns the blood from the lower half of the body to the heart) for the purpose of catching blood clots, originating in the legs or pelvis, from advancing to the lungs.
		X-ray dye is injected into the inferior vena cava while x-rays are obtained.
	www.gulfcoastcardio.com /vena.shtml (143 words)

	Inferior Vena Cava (Site not responding. Last check: 2007-10-14)
		the second and third trimesters, women should avoid exercise that involves lying on their backs, which could compress the inferior vena cava blood vessel and...
		Abdominal and pelvic ultrasound revealed a right-sided, uterine adnexal tumor (5 x 11 cm) penetrating the inferior vena cava (IVC) (Figure 1, a).
		It brings back deoxygenated blood to the heart from everywhere in the body inferior to the diaphragm, whilst the superior vena cava drains everything above the diaphragm.
	www.wikiverse.org /inferior-vena-cava (170 words)

	Nonmalignant superior vena cava syndrome: Pathophysiology and management
		Superior vena cava (SVC) syndrome results from the obstruction of the blood flow in the superior vena cava [[1]].
		Superior vena cava syndrome and its treatment in a middle-aged woman with an indwelling port access catheter who had received chemotherapy for breast cancer.
		The cause of superior vena cava syndrome: diagnosis with percutaneous atherectomy.
	www.hemodinamiadelsur.com.ar /journals/journal_079.asp (3992 words)

	Echocardiography (Site not responding. Last check: 2007-10-14)
		If the anomalous pulmonary connection is supradiaphragmatic, it usually occurs to a left vertical vein, which empties into the superior vena cava or a persistent left superior vena cava.
		Image loop of a transesophageal study showing an oval-shaped persistent left superior vena cava opacified with agitated intravenous saline that was injected into a left antecubital vein.
		The basis for persistence of the left superior vena cava (LSVC), usually associated with cardiac malformations, is poorly understood.
	www2.umdnj.edu /~shindler/plsvc.html (479 words)

	eMedicine - Superior Vena Cava Syndrome : Article by Michael S Beeson, MD, MBA (Site not responding. Last check: 2007-10-14)
		Background: Superior vena cava syndrome (SVCS) is characterized by gradual, insidious compression/obstruction of the superior vena cava (SVC).
		The diagnosis of superior vena cava syndrome (SVCS) is often made on clinical grounds alone, combining clinical presentation with an often-obtained history of thoracic malignancy.
		Superior vena cava syndrome (SVCS) is associated with malignancy.
	www.emedicine.com /emerg/topic561.htm (2084 words)

	Superior Vena Cava Syndrome -- eCureMe.com
		The superior vena cava is the large blood vessel that collects the blood from all of the veins in the upper part of the body and then returns this blood to the heart.
		This may occur because of a clot or tumor extension in the superior vena cava or due to external pressure on the superior vena cava (tumors and other causes such as infections).
		-- excision of the fibrous tissue around the superior vena cava, and treatment of the underlying cause.
	www.ecureme.com /emyhealth/data/Superior_Vena_Cava_Syndrome.asp (263 words)

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