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Aneurysms

An aneurysm is a bulge or "ballooning" in the wall of an artery. Arteries are blood vessels that carry oxygen-rich blood from the heart to other parts of the body. If an aneurysm grows large, it can burst and cause dangerous bleeding or even death.

Most aneurysms occur in the aorta, the main artery traveling from the heart through the chest and abdomen. Aneurysms also can happen in arteries in the brain, heart and other parts of the body. If an aneurysm in the brain bursts, it causes a stroke.

Aneurysms can develop and become large before causing any symptoms. Often doctors can stop aneurysms from bursting if they find and treat them early. Medicines and surgery are the two main treatments for aneurysms.

National Heart, Lung, and Blood Institute

Aneurysm on Wikipedia

An '''aneurysm''' (or '''aneurism''') (from Greek language ανευρυσμα, a dilatation) is a localized dilation or ballooning of a blood vessel. Aneurysms most commonly occur in the artery at the base of the brain (the circle of Willis) and in the aorta (the main artery coming out of the heart) - this is an aortic aneurysm. The layer of the artery that is in direct contact with the flow of blood is the ''tunica intima'', commonly called the intima. This layer is made up of mainly endothelial cells. Just deep to this layer is the ''tunica media'', known as the media. This "middle layer" is made up of smooth muscle cells and elastic tissue. The outermost layer (furthest from the flow of blood) is known as the ''tunica adventitia'' or the adventitia. This layer is composed of connective tissue.

Types

Aneurysms are also described according to their shape: Saccular or fusiform. Aneurysms can be broken down into two groups: ''true aneurysms'' and ''false aneurysms''. A true aneurysm involves an outpouching of all three layers of a blood vessel: the intima, the media, and the adventitia. True aneurysms can be due to congenital malformations, infections, or hypertension. A ''false aneurysm'', also known as a pseudoaneurysm, involves an outpouching of only the intima. Pseudoaneurysms can be due to trauma involving the intima of the blood vessel, and are a known complication of percutaneous arterial procedures.

Locations

Aneurysms can occur anywhere where there is an artery. Most non-intracranial aneurysms (95%) arise distal to the origin of the kidney arteries at the infrarenal abdominal aorta, a condition mostly caused by atherosclerosis. The thoracic aorta can also be involved. One common form of thoracic aortic aneurysm involves widening of the proximal aorta and the aortic ...   [ Read More ]


External Resources

Aneurysm - Struggling diverse metal band based in Denmark.

Aneurysm Records - Small label with offices in Virginia and Pennsylvania, USA. Consists of a range of Garage bands inspired by Punk, Metal, Hard Rock, Ska and other genres of music.

AVM and Aneurysm Information - Personal site focused on arteriovenous malformations. Includes information about treatments (including surgery and medications), support resources, information about related conditions including brain injury and spinal AVMs, and links to patients' stories and other resources.

Interventional Radiology Procedures for Treatment and Prevention of Stroke - Educational resource from the Society of Interventional Radiology. Covered procedures include intra-arterial thrombolysis, aneurysm embolization, and carotid stenting.

University of Pittsburgh Center for Cerebrovascular Surgery - Specializing in the treatment of carotid stenoses, aneurysms, arteriovenous malformations, and other vascular conditions associated with stroke.

Friendship Corner/Brain buddies - A message board for those who wish to talk about surgery, traumas, tumors, aneurysm and brain injuries.

Vascular Disease Foundation - Patient education and information about peripheral arterial disease (PAD), including atherosclerosis or hardening of the arteries, abdominal aortic aneurysms (AAA), Buerger's Disease, carotid artery disease, deep vein thrombosis and other venous conditions. Also information on amputation.

Vascular Disease Information - Offers information on Carotid Artery Disease, Aortic Aneurysm and Lower Extremity Ischemia. Includes diagnosis, symptoms, self care and surgical interventions for treatment. Clinic located in San Francisco, schedule your appointment from the web page.

The Aneurysm Information Project - Information on all aspects of the disease plus a support group offering insights from patients.

Abdominal Aortic Aneurysms - Nursing assessment, interventions, descriptions and photos of aneurysms.



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