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Aortic arch - Wikipedia, the free encyclopedia The arch of the aorta, and its branches. The arch of the aorta is covered anteriorly by the pleura and anterior margins of the lungs, and by the remains of the thymus. Passing downward on the left side of this part of the arch are four nerves; in order from before backward these are, the left phrenic, the lower of the superior cardiac branches of the left vagus, the superior cardiac branch of the left sympathetic, and the trunk of the left vagus. en.wikipedia.org /wiki/Aortic_arch   (600 words)

TheFetus.net - Aortic arch interruption -Thomas C. Wheeler, MD, Philippe Jeanty, MD, PhD Differential diagnosis: Aortic atresia with hypoplasia of the ascending aorta, aortic coarctation with tubular hypoplasia of the aorta. A diagnosis of interrupted aortic arch type B was made and termination of the pregnancy was offered due to the poor prognosis associated with a hydropic fetus at 23 weeks gestation. Interrupted aortic arch may be secondary to a decreased antegrade bloodflow in the ascending aorta due to the almost constant presence of ventricular septal defects and left ventricular outflow obstructions www.thefetus.net /page.php?id=35   (2363 words)

Cedars-Sinai Heart Center - Aortic Disease Aortic enlargement, although perhaps not yet qualified for the term aneurysm, should be monitored, treated medically, and the lifestyle and diet of the patient addressed. Broad ranges of aortic diameters sometimes listed as the normal size of the aorta necessarily span a large variation of body sizes in the population and may be misleading regarding a given individual. Aortic dissection is the tearing of the inner layer of the aortic wall, allowing blood to leak into the wall itself and cause the separation of the inner and outer layers. www.csmc.edu /3866.html   (2621 words)

Minimally Invasive Vascular Surgery at Mount Sinai - Aortic Arch Conditions Aortic arch conditions result in inflammation and eventual blockage of the vessels that branch off the aorta, leading to decreased blood flow to areas of the body. Aortic arch conditions are abnormalities in the structure of the arteries that branch off the top of the aorta. Though forms of aortic arch conditions can result from blood pressure changes, clots, trauma, or a congenital disorder, the name "aortic arch syndrome" has become synonymous with Takayasu's arteritis, an autoimmune response that inflames the aortic artery (the main artery of the heart) and the pulmonary artery (the main artery of the lung). www.mountsinai.org /msh/clinical_services/mis_vasc_arch.htm   (521 words)

eMedicine - Vascular Ring, Right Aortic Arch : Article by Doff McElhinney, MD   (Site not responding. Last check: 2007-11-03) The third, fourth, and sixth arches, along with the seventh intersegmental arteries and the left dorsal aorta, are the primary contributors to the normal aortic arch and its major thoracic branches (see Image 1). In contrast to right aortic arch with aberrant left subclavian artery from a retroesophageal diverticulum, the descending aorta usually crosses to the left side of midline proximally in its course, although in rare cases, it remains to the right of midline until reaching the lower portion of the thorax. An uncommon form of right aortic arch that technically is not a vascular ring but may cause symptoms similar to a ring is a right arch with an aberrant left subclavian artery arising as the last branch of the arch and a left-sided descending aorta. www.emedicine.com /ped/topic2542.htm   (4927 words)

Interrupted Aortic Arch The arch obstruction was repaired using resection and primary anastomosis in 54 patients, synthetic patch aortoplasty in 3, subclavian flap aortoplasty in 2, and an interposition gortex graft placement in 1. Type A interrupted aortic arch was present in 37 cases, 41 patients had type B, and one had type C. Interrupted aortic arch was associated with single ventricular septal defect in 35 cases, 24 patients had associated complex heart defects, and 30 had significant subaortic stenosis (six had both subaortic stenosis and complex association). We examined 13 hearts with concordant atrioventricular and ventriculoarterial connections and interruption of the aortic arch to establish and describe the morphologic features of the outflow tracts in relation to axial deviation and malalignment of the outlet septum as opposed to overriding of the arterial valvular orifices. www.pediheart.org /searches/topic/iaa.htm   (3696 words)

Aortic Aneurysms An aortic aneurysm is a widening, bulge, or ballooning out of a portion of the aorta, usually a weak spot in the aortic wall, causing the vessel to progressively expand to at least 1.5 times beyond its normal diameter of one inch. While thoracic aortic aneurysms involve the ascending aorta, arch or descending aorta; abdominal aortic aneurysms affect the part of the aorta in the abdominal cavity. Aortic dissection is the most common acute illness of the aorta, with more than 2,000 new cases in the USA every year. www.uth.tmc.edu /schools/med/imed/med_gen/aortic.htm   (761 words)

BioMedical Engineering OnLine | Full text | Stress analysis in a layered aortic arch model under pulsatile blood flow Composite stress in the aortic wall plane is high at the ascending portion of the arch and along the top of the arch, and is higher in the media than in the intima and adventitia across the wall thickness. Stress analysis of the aortic arch was implemented to study the effects of aortic motion on aortic dissection [10]. The assumption of a flat velocity profile at the aortic inlet is justified by in vivo measurements using hot film anemometry on various animal models, which have demonstrated that the velocity profile distal to the aortic valve are relatively flat [23]. www.biomedical-engineering-online.com /content/5/1/25   (4543 words)

Aortic Surgery Program, Aortic Root Aneurysms The aortic root is continuous with the ascending aorta (the portion of the aorta between the root and the aortic arch). The aortic arch is the portion of the aorta where blood is directed to the brain and arms. The aortic arch has three major branches: the innominate artery, which supplies blood to the right arm and right side of the brain, the left common carotid artery, which supplies blood to the left brain, and the left subclavian artery, which supplies blood to the left arm. www.columbiasurgery.org /pat/aortic/aneurysms.html   (349 words)

UCSF vascular surgeons develop new technique to repair aortic arch aneurysm In an aortic aneurysm the walls of the aorta, the primary blood vessels leading away from the heart, bulge out like a filling water balloon. The aortic arch repair represents the first time a U.S. patient's entire aortic arch has been successfully repaired using a minimally invasive branched stentgraft technique. Aortic aneurysms are now the tenth leading cause of death among American men and the thirteenth leading cause of death in women. www.eurekalert.org /pub_releases/2003-10/uoc--uvs101303.php   (899 words)

A New Noninvasive Technique for Imaging Atherosclerotic Plaque in the Aortic Arch of Stroke Patients by Transcutaneous ... of plaque characteristics from the carotid to the aortic arch. in the distal ascending aorta and aortic arch. primarily in the curvature of the arch from the distal ascending stroke.ahajournals.org /cgi/content/full/29/3/673   (2677 words)

eMedicine - Interrupted Aortic Arch : Article by Alvin J Chin, MD   (Site not responding. Last check: 2007-11-03) Surgical reconstruction of the arch is now considered straightforward; hence, attention is increasingly focused on the preoperative identification and surgical management of the aortic valve and subaortic stenosis found in approximately half of cases. In type B interrupted left aortic arch, the interruption occurs distal to the origin of the left common carotid artery. In the former, the aortic outflow region is directly enlarged and the aortic valve is replaced with a pulmonary valve autograft. www.emedicine.com /ped/topic2515.htm   (2550 words)

Malformation of the Aortic Arch Term used to describe those aortic arch of pulmonary artery malformations that exhibit abnormal relation with esophagus and trachea, causing compression, dysphagia, and/or respiratory symptoms). 5) 3rd pair leaves aortic sac and forms right and left horns, the right horn becomes the brachiocephalic trunk and the left horn along with the 4th aortic arch becomes the arch of the aorta. Left arch passes anteriorly and to the left of trachea and the right aortic arch passes to the right and posterior of esophagus. perfline.com /student/arch.html   (374 words)

InterVascular - Clinical Articles   (Site not responding. Last check: 2007-11-03) The distal side of the arch graft with four limbs was sutured to the descending aorta 7 cm distal to the origin of the LSA (Fig. As for aortic arch repair, total arch replacement could reduce the incidence of stroke because, in this technique, the ascending aorta and aortic arch, in which clots and atheroma are often present even in the absence of aneurysms, are completely resected. The in-hospital mortality of total arch replacement using aortic arch branched graft in the 120 patients operated on over the last four years at our institution was 2.5%, and postoperative temporary and permanent neurological dysfunctions were 2.5% and 2.5%, respectively. www.intervascular.com /us/clinicalarticles_4.html   (1215 words)

MedlinePlus Medical Encyclopedia: Thoracic aortic aneurysm A thoracic aortic aneurysm is a widening (bulging) of part of the wall of the aorta, the body's largest artery. The most common cause of a thoracic aortic aneurysms is hardening of the arteries (atherosclerosis). The long-term prognosis for patients with thoracic aortic aneurysm is determined by other medical problems such as heart disease and diabetes, which may have caused or contributed to the condition. www.nlm.nih.gov /medlineplus/ency/article/001119.htm   (672 words)

U-M CVC - Interrupted Aortic Arch   (Site not responding. Last check: 2007-11-03) Interrupted aortic arch is a very rare heart defect that occurs when the aorta does not develop normally while the baby is in the mother’s womb. In babies with interrupted aortic arch, there is a complete blockage between the ascending and the descending aorta (1). In newborns with interrupted aortic arch, the only way for blood to bypass the blockage is via the patent ductus arteriosus (4). www.med.umich.edu /cvc/mchc/parint.htm   (1081 words)

AtheroNews - 17 May 2004 - Recurrent ischemic stroke associated with severe aortic atherosclerosis Intima-media thickness (IMT) was measured to determine the severity of atheroma, and the extension of the aortic lesions was determined by echocardiography. The researchers conclude that "a severe atheroma extending to the aortic branches has a significant association with ischemic stroke in patients with or without heart disease," and that both the thickness and degree of extension of the atheroma were important factors. Aortic arch atherosclerotic lesions and the recurrence of ischemic stroke. www.atherothrombosis.org /news/stroke/nh_17may04.cfm   (953 words)

Agenesis of the Internal Carotid Artery Associated with Aortic Arch Anomaly in a Patient with Congenital Horner's ... Aortogram of aortic arch reveals that the right SA is the first branch of the left aortic arch, followed by a bicarotid trunk and the left SA. vessels of the aortic arch are not rare, the origin of the SA artery as the first branch of an aortic arch is extremely uncommon. arch with regression of the ipsilateral fourth branchial arch www.ajnr.org /cgi/content/full/23/6/929   (1958 words)

Arches National Park The park is named for the more than 2,000 cataloged arches (ranging in size from a 3 foot opening to 306 feet from base to base) that are found here. This arch started as a cave where a large pothole at the top was continually being dug deeper and deeper by rainwater. This is the longest span arch in the park and will probably be the next to collapse. www.exploratorium.edu /ronh/adventure/arches.html   (725 words)

NEJM -- Double Aortic Arch Diagnosed by Magnetic Resonance Imaging Magnetic resonance imaging confirmed the diagnosis of a double aortic arch (Panel A; Ao denotes aorta, E esophagus, and Tr trachea). The trachea and esophagus were seen to run through the vascular ring of the two aortic arches (Panel B). This arch was ligated distal to the left subclavian artery. content.nejm.org /cgi/content/full/351/22/e20   (156 words)

Interrupted Aortic Arch Interrupted aortic arch is characterized by interruption of the aortic arch distal to the left subclavian artery (Type A), proximal to the left subclavian artery (Type B), or between the innominate artery and the left common carotid artery (Type C). Type A interrupted aortic arch without VSD or with a small VSD is usually repaired much like coarctation of the aorta with end-to-end anastomosis (see Coarctation of the Aorta). Repair of type B and C interrupted aortic arch requires cardiopulmonary bypass, with deep hypothermia and circulatory arrest. www.chw.org /display/PPF/DocID/21362/router.asp   (611 words)

ScienceDaily: UCSF Vascular Surgeons Develop New Technique To Repair Aortic Arch Aneurysm   (Site not responding. Last check: 2007-11-03) Aortic Aneurysm Associated With Decreased Incidence Of Atherosclerosis (September 13, 2005) -- Oddly enough, having an aneurysm in the ascending aorta is significantly associated with decreased incidence of atherosclerosis, according to a study by Yale School of Medicine researchers published... Clinical Trial Of Newest Technology To Treat Thoracic Aortic Aneurysms Begins (March 10, 2005) -- A clinical trial is underway at the Hospital of the University of Pennsylvania (HUP) to study the safety and effectiveness of an endovascular medical device to treat life-threatening thoracic aortic... Estrogen Protects Male Rats From Aortic Aneurysms (October 18, 2004) -- When it comes to abdominal aortic aneurysms life-threatening bulges or weak areas in the main artery feeding blood to the lower half of the body new research shows that it is definitely better to... www.sciencedaily.com /releases/2003/10/031017074020.htm   (2136 words)

Aortic arch definition - Medical Dictionary definitions of popular medical terms   (Site not responding. Last check: 2007-11-03) Aortic arch: The second section of the aorta. The brachiocephalic trunk, the first branch off the aortic arch, splits to form the right subclavian artery and the right common carotid artery which supply blood, respectively, to the right arm and to the right side of the neck and head. The left common carotid artery and left subclavian artery, the second and third branches off the aortic arch, perform parallel functions on the left side. www.medterms.com /script/main/art.asp?articlekey=8637   (204 words)

What causes double aortic arch in babies? - Heart - DoctorNDTV I contacted a doctor and finally the problem detected was double aortic arch which was compressing his breathing as well as feeding pipes. During development of the arch in the foetus, the arch is always duplicate and one of them regresses. There is association between Double aortic arch and 22q 11 deletion in chromosome but we are far from understanding why these deletions occur. www.doctorndtv.com /FAQ/detailfaq.asp?id=1910   (506 words)

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