Aneurysms
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Aneurysms
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À propos de cet audio
Aneurysms are typically defined as vascular enlargements with a diameter ≥ 1.5 times that of a normal artery. True aneurysms are arterial enlargements in which all three layers of the vessel wall are weakened and form part of the aneurysmal wall. False aneurysms are extraarterial hematomas contained by surrounding tissues and/or the tunica adventitia that maintain persistent communication with the arterial lumen. Arterial dissections are vascular enlargements caused by the separation of arterial wall layers as blood enters the intima-media space through a tear in the tunica intima. Aneurysms are also differentiated according to their location. Symptoms generally depend on the location and size of the aneurysm. Management may be medical, surgical, or endovascular, depending on the type of aneurysm, symptoms, and associated complications.