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A popliteal artery aneurysm (PAA) is a bulging of the popliteal artery. [1] A PAA is diagnosed when a focal dilation greater than 50% of the normal vessel diameter is found (the normal diameter of a popliteal artery is 0.7-1.1 cm). PAAs are the most common aneurysm of the peripheral vascular system, accounting
A popliteal aneurysm may be distinguished from other masses by palpable pulsations (thrills) and abnormal arterial sounds detectable with a stethoscope. Because the artery lies deep to the tibial nerve, an aneurysm may stretch the nerve or compress its blood supply (see vasa vasorum). Pain from such nerve compression is usually referred, in ...
This migration can cause structural abnormalities, such as irregular positioning of the popliteal artery, and can account for the rare instances of entrapment caused by the popliteus muscle. [9] Less than 3% of all people are born with this anatomical defect that progresses into PAES, and of those who are born with the anatomical defect, the ...
[3] [4] Another type of treatment possible by angiography (if the images reveal an aneurysm) is the introduction of metal coils through the catheter already in place and maneuvered to the site of aneurysm; over time these coils encourage formation of connective tissue at the site, strengthening the vessel walls. [5] [6]
Symptoms of AVMs vary according to their location. Most neurological AVMs produce few to no symptoms.Often the malformation is discovered as part of an autopsy or during treatment of an unrelated disorder (an "incidental finding"); in rare cases, its expansion or a micro-bleed from an AVM in the brain can cause epilepsy, neurological deficit, or pain.
“When aneurysms grow to a large size, they may cause compression on the surrounding brain and cranial nerves. Symptoms are dependent on the aneurysm location and the critical structures that are ...
The common carotid artery is the large artery whose pulse can be felt on both sides of the neck under the jaw. On the right side it starts from the brachiocephalic artery (a branch of the aorta), and on the left side the artery comes directly off the aortic arch. At the throat it forks into the internal carotid artery and the external carotid ...
The "neck" of the pseudoaneurysm is the narrow path of blood flow between the artery, through the arterial wall, and into the pseudoaneurysm cavity. The artery, neck, and pseudoaneurysm are seen on ultrasound. The ultrasound probe can be pushed firmly against the patient's skin to compress the neck of the pseudoaneurysm for usually about 20 ...