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Topic: Abdominal aortic aneurysm

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	Abdominal Aortic Aneurysm [May 1996; 27-3]
		Aortic diameters of 6 cm or more, and increase of diameter of 1 cm or more in a year, or developments of symptoms attributable to the aneurysm all constituted criteria for considering surgery.
		The prevalence of aneurysm in the screened population was higher in men than women, and highest (at about 9%) in men in their eighth decade.
		The incidence of ruptured aortic aneurysm in men over the follow-up period of five years showed a fall of more than 50% (9 of 3205 in scanned plus refused scan versus 20 of 3228 in control).
	www.jr2.ox.ac.uk /bandolier/band27/b27-3.html (851 words)

	Abdominal Aortic Aneurysm (Site not responding. Last check: 2007-10-22)
		An abdominal aortic aneurysm is an abnormal dilation of the abdominal portion of the aorta (the major artery from the heart).
		Abdominal aortic aneurysms may be caused by an infection, a congenital weakening of the connective tissue of the artery wall or from trauma.
		Because surgery for an abdominal aortic aneurysm is risky, the surgeon may wait for the aneurysm to expand to a certain size before operating (that is, when the risk of complications exceeds the risk of surgery).
	www.clevelandclinic.org /health/health-info/docs/2400/2455.asp?index=9513 (1081 words)

	MedlinePlus Medical Encyclopedia: Abdominal aortic aneurysm
		An aneurysm is when a blood vessel becomes abnormally large or balloons outward.
		The abdominal aorta is a large blood vessel that supplies blood to your abdomen, the pelvis, and legs.
		Aortic dissection occurs when the innermost lining of the artery tears and blood leaks into the wall of the artery.
	www.nlm.nih.gov /medlineplus/ency/article/000162.htm (599 words)

	Abdominal Aortic Aneurysm (AAA)
		An aneurysm is a bulge in the wall of an artery, usually the aorta.
		Aneurysms that are larger than 5 cm (2 in) or are causing symptoms are always treated with surgery, unless it is considered risky because of other health problems.
		If you have an abdominal aortic aneurysm that does not need to be treated by surgery at this time, keep regular appointments for ultrasound scans of the aneurysm to monitor it for changes in size.
	www.hmc.psu.edu /healthinfo/a/abaortic.htm (843 words)

	Dr. Koop - Abdominal aortic aneurysm
		Abdominal aortic aneurysm is an abnormal ballooning of the abdominal portion of the aorta, which is the major artery from the heart.
		Abdominal aortic aneurysm may be caused by infection, congenital weakening of the connective tissue component of the artery wall, or trauma.
		Aortic dissection occurs when the lining of the artery tears and blood leaks into the wall of the artery.
	www.drkoop.com /ency/93/000162.html (306 words)

	Postgraduate Medicine: Weighing risks in abdominal aortic aneurysm
		The objectives of treatment of abdominal aortic aneurysms, with either conventional surgery or the endovascular approach, are to relieve symptoms, prevent rupture, and restore arterial continuity.
		Abdominal aortic aneurysms are believed to result from several factors, one probably being inflammation that leads to dilatation, plaque deposition, and degeneration of the arterial wall.
		Conversely, aortic aneurysms are present in about 8% of patients with a unilateral popliteal aneurysm, 30% of patients with bilateral popliteal aneurysms, and 10% of patients with carotid atherosclerotic disease.
	www.postgradmed.com /issues/1999/08_99/gorski.htm (3555 words)

	eMedicine - Abdominal Aortic Aneurysm : Article by William Pearce, MD
		Abdominal aortic aneurysms (AAAs) represent a degenerative process of the abdominal aorta that is often attributed to atherosclerosis; however, the exact cause is not known.
		Inflammatory aneurysms represent a subsegment of AAA and are characterized by a thick inflammatory peal.
		Although sizing the aneurysm is important, the anatomic relationships important to surgery are also determined, ie, location of the renal arteries, length of the aortic neck, condition of the iliac arteries, and anatomic variants such as a retroaortic left renal vein or horseshoe kidney.
	www.emedicine.com /med/topic3443.htm (5842 words)

	USC Center for Vascular Care
		Abdominal aortic aneurysms (AAA's) most often involve the infrarenal aorta, or that portion of the blood vessel that lies below the takeoff of the arteries to the kidneys (renal arteries).
		Although the mechanism by which smoking causes or worsens aneurysms is not known, it is known that the number of cigarettes and years smoked, increasing depth of inhalation, and the presence of COPD significantly impacts AAA prevalence, size, rate of expansion and risk of rupture.
		Some aneurysms are found during evaluation of pain in the back or side that can occur as the aneurysm grows and presses on the spinal column and nearby nerves.
	www.surgery.usc.edu /divisions/vas/abdominalaorticaneurysm.html (976 words)

	Aneurysm, Aortic
		Aortic aneurysms usually occur in the abdomen below the kidneys (abdominal aneurysm), but may occur in the chest cavity (thoracic -- tho-RAS'ik -- aneurysm). This can happen if the wall of the aorta becomes weakened by build ups of fatty deposits called plaque.
		Aneurysms may also be due to an inherited disease such as the Marfan syndrome.
		Aneurysms can be detected by X-ray or by imaging techniques such as echocardiography (ek"o-kar"de-OG'rah-fe), an MRI (magnetic resonance imaging) or a computed tomography (to-MOG'rah-fe) (CT) scan.
	www.americanheart.org /presenter.jhtml?identifier=4455 (202 words)

	[Clinical Preventive Services] Screening for Abdominal Aortic Aneurysm (Site not responding. Last check: 2007-10-22)
		An aneurysm is usually defined as a focal dilation of the aorta at least 150% of the normal aortic diameter.3 Given a normal aortic diameter in older men of 2 cm (range 1.4-3.0 cm),4 an aortic diameter above 3 cm usually indicates an aneurysm.
		Although direct evidence that screening for AAA reduces mortality or morbidity is not available in any population, clinicians may decide to screen selected high-risk patients, due to the significant burden of disease and the availability of effective surgical treatment for large aneurysms.
		Echography in the diagnosis of abdominal aortic aneurysm.
	cpmcnet.columbia.edu /texts/gcps/gcps0016.html (1662 words)

	EMR Textbook - Abdominal Aortic Aneurysm (Site not responding. Last check: 2007-10-22)
		This category of AAA is characterized by asymmetric thickening of the anterolateral aneurysm wall, fibrosis, and adhesion of adjacent structures such as the duodenum, ureters, inferior vena cava, or the left renal vein.
		Banerjee A. Atypical manifestations of ruptured abdominal aortic aneurysms.
		Acute rupture of an aortic aneurysm mimicking the discus hernia syndrome.
	www.thrombosis-consult.com /articles/Textbook/79_abdominalaorticaneurysm.htm (7706 words)

	Abdominal Aortic Aneurysm
		The etiologies of aortic aneurysms have long been thought to be that of degeneration of the aortic wall, infection, dissection, smoking or splitting of the vessel wall due to high blood pressure.
		Abdominal aneurysms are diagnosed 70% of the time by palpation by the family doctor as part of a physical exam.
		Abdominal ultrasounds and CAT scans are then used to confirm the location and the size of the aneurysm.
	www.justaskourdoctors.com /medical-detail.asp?id=1 (804 words)

	Endovascular Repair of Abdominal Aortic Aneurysm
		In addition, conventional surgical repair of abdominal aortic aneurysm represents a very major operation through a large abdominal incision, which requires at least a week in the hospital and perhaps one to two months before the patient is fully recovered and returns to the preoperative state of well being.
		For patients with an abdominal aortic aneurysm that is limited to the aorta, and in whom there is both a neck between the renal arteries and the aneurysm as well as a neck between the lower portion of the aneurysm and the iliac bifurcation, a graft of tubular configuration is available.
		The contralateral iliac artery aneurysm is secondarily excluded, and bloodflow to the contralateral leg and pelvic circulation is accomplished with the placement of a subcutaneous crossover graft between the two femoral arteries.
	www.riversidecardiology.com /archive/01192000.htm (1755 words)

	Aortic aneurysm - abdominal, thoracic symptoms and treatment
		An aortic aneurysm is the dilatation (widening or bulge) of a portion of the aorta, usually at a weak spot in the aortic wall.
		Aortic aneurysms can be diagnosed from their symptoms when they occur but this is often too late.
		Dissecting aneurysms are diagnosed initially from their symptoms and physical examination of the pulses in the arms and legs.
	hcd2.bupa.co.uk /fact_sheets/html/aortic_aneurysm.html (939 words)

	Abdominal Aortic Aneurysm (Site not responding. Last check: 2007-10-22)
		The number of discharges with a first-listed diagnosis of aortic aneurysm increased from 39,000 in 1979 to 67,000 in 1992.
		Although the genetic basis of aneurysm formation has yet to be firmly established, there is good reason to believe that screening of the first-degree relatives of the patient should be instituted.
		Contrasting epidemiology of aortic aneurysm and peripheral vascular disease in England and Wales.
	www.fcmsdocs.org /Conference/8th/8abdominalaortic.html (945 words)

	Abdominal Aortic Aneurysms - AAA
		Some patients have the aneurysm diagnosed by chance when they are examined for another problem, or if they have a scan for a different reason (prostate and kidney trouble, or gallstones, for example).
		Most aneurysms are treated by an operation on the tummy in which the aneurysm is replaced with an artificial artery made of a very strong plastic material called Dacron.
		Some aneurysms may also be suitable for treatment by a new method in which the graft is threaded up into the aortic aneurysm through a small incision in each groin.
	www.vascularsociety.org.uk /patient/aaa.html (829 words)

	► Abdominal aortic aneurysm
		If the aneurysm is small and there are no symptoms (for example, if the aneurysm is found during a routine physical examination), periodic evaluation, usually with annual ultrasound examination, to watch for changes may be recommended.
		Because surgery for abdominal aortic aneurysm is risky, the surgeon may wait for the aneurysm to expand to a certain size (usually >5 cm) before operating (that is, when the risk of complications exceeds the risk of surgery).
		Go to the emergency room or call the local emergency number (such as 911) if you develop severe abdominal pain or other symptoms that are suggestive of an abdominal aortic aneurysm.
	www.umm.edu /ency/article/000162trt.htm (305 words)

	Abdominal Aortic Aneurysm Repair (Site not responding. Last check: 2007-10-22)
		The abdominal aorta is the portion of the aorta (the largest blood vessel in the body) that carries blood to the abdomen, pelvis, and legs.
		Abdominal aortic aneurysms are most often a result of atherosclerosis combined with high blood pressure.
		The aneurysm is removed and an artificial graft made of Dacron is stitched to the normal aorta on either side of where the aneurysm had been.
	realmedicine.org /HealthInfoLib/HGArticle.aspx?ArticleID=14775 (615 words)

	VascularWeb: Abdominal Aortic Aneurysm
		The leading thought is that the aneurysm may be caused by inflammation in the aorta, which may cause its wall to break down.
		Abdominal aortic aneurysms are most often found when a physician is performing an imaging test, such as an ultrasound, for another condition.
		During an open aneurysm repair, also known as surgical aneurysm repair, your surgeon makes an incision in your abdomen and replaces the weakened part of your aorta with a tube-like graft.
	www.vascularweb.org /_CONTRIBUTION_PAGES/Patient_Information/NorthPoint/Abdominal_Aortic_Aneursym.html (916 words)

	eMedicine - Abdominal Aortic Aneurysm, Diagnosis : Article by Martin G Radvany, MD (Site not responding. Last check: 2007-10-22)
		The true size of the aneurysm may not be discernible because of a mural thrombus; therefore, underestimation of the true extent of the aneurysm is possible.
		The primary factors that determine suitability for endovascular repair are the diameter and length of the proximal neck of the aneurysm, the tortuosity of the aorta, and the anatomy of the iliac arteries.
		Sonogram of a patient with an abdominal aortic aneurysm.
	www.emedicine.com /radio/topic1.htm (4266 words)

	Abdominal aortic aneurysm (Site not responding. Last check: 2007-10-22)
		Symptoms of abdominal aortic aneurysm may include a pulsating abdominal mass with rhythmic throbbing.
		If you have an abdominal aortic aneurysm, there will be a "blowing" murmur over the aorta or a "whooshing" sound (bruit).
		If a rupture is suspected, he or she may also conduct an examination for signs of blood loss (hypovolemia) and an evaluation of lower extremity pulses and circulation.
	www.shands.org /health/information/000162sym.htm (219 words)

	Resource Library: Find information on Abdominal aortic aneurysm at MerckSource
		An abdominal aortic aneurysm is the abnormal enlargement or ballooning of the abdominal aorta, where it becomes greater than 50% larger than the expected normal arterial diameter.
		The exact cause is unknown, but risk factors for developing an abnormal aortic aneurysm include high blood pressure, smoking, high cholesterol, and obesity.
		Symptoms of an abdominal aortic aneurysm may include a pulsating abdominal mass and/or impaired blood flow to the legs.
	www.mercksource.com /pp/us/cns/cns_hl_adam.jspzQzpgzEzzSzppdocszSzuszSzcnszSzcontentzSzadamzSzencyzSzarticlezSz000162zPzhtm (499 words)

	Abdominal Aortic Aneurysm (Site not responding. Last check: 2007-10-22)
		The patient has an abdominal aortic aneurysm measuring approximately 10 cm in diameter.
		The volumetric data acquisition of 5 cm thickness included the aortic arch but did not include the aortic bifurcation which should have been included to allow evaluation of the common iliac arteries.
		Maximum Intensity Projection of an abdominal aortic aneurysm measuring approximately 10 cm in diameter.
	dpi.radiology.uiowa.edu /nlm/app/aorta/aaa/aaa.html (390 words)

	Abdominal aortic aneurysm
		An AAA is an increase in aortic diameter by greater than 50% of normal
		AAA are suitable for screening as elective operation of asymptomatic aneurysms can reduce mortality associated with rupture
		Aneurysm morphology is best assessed with spiral CT Only about 40% of aneurysms suitable for this type of repair
	www.surgical-tutor.org.uk /system/vascular/aaa.htm (542 words)

	Aneurysm Center - HeartCenterOnline:
		Aneurysm ruptures are painful events in which the weakened vessel bursts or tears, causing internal bleeding that can lead to death.
		An aortic aneurysm occurs in the body's main artery (aorta) and an abdominal aortic aneurysm (AAA) occurs in the section of the aorta the runs through the abdomen.
		A ruptured aortic aneurysm may be called an aortic dissection.
	heart.healthcentersonline.com /aneurysm (372 words)

	Abdominal aortic aneurysm definition - Medical Dictionary definitions of popular medical terms
		Abdominal aortic aneurysm: A ballooning or widening of the main artery (the aorta) as it courses down through the abdomen.
		At the point of the aneurysm, the aneurysm usually measures 3 cm or more in diameter.
		Abdominal Aortic Aneurysm - Learn about abdominal aortic aneurysms including how they tend to develop, causes, symptoms, diagnosis, how they are repaired, and what happens if they rupture
	www.medterms.com /script/main/art.asp?articlekey=6750 (284 words)

	Abdominal Aortic Aneurysm (Site not responding. Last check: 2007-10-22)
		An aortic (a-OR-tik) aneurysm (AN-your-is-um) is a balloon-like swelling in the wall of the aorta.
		Also, if someone in your family has had an abdominal aortic aneurysm, your chances of getting one are higher.
		Abdominal X-rays: These pictures of the organs inside your abdomen will help the doctor locate the aneurysm and judge its severity.
	www.healthsquare.com /mc/1215200417/fgmc0114.htm (1497 words)

	Information on Abdominal aortic aneurysm produced by medical doctors
		What are the symptoms of an abdominal aortic aneurysm?
		An aneurysm is an area of a localized widening (dilation) of a blood vessel.
		An aortic aneurysm involves the aorta, one of the large arteries that carries blood from the heart to the rest of the body.
	www.medicinenet.com /abdominal_aortic_aneurysm/article.htm (381 words)

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