Pseudoaneurysm | 合法醫療器材資訊網

A pseudoaneurysm, also known as a “false aneurysm”, occurs when there is a breach to the arterial wall, resulting in an accumulation of blood between the tunica media and tunica adventitia of the artery.

There is a direct communication between the vessel lumen and aneurysm lumen, meaning the size of the pseudoaneurysm can continue to increase. Small pseudoaneurysms may be managed conservatively and thrombose, however many will continue to grow until, if left untreated, they perforate.

They typically occur following damage to the vessel wall, such as puncture following cardiac catheterisation or repeated injections to the vessel (e.g. from intravenous drug use (IVDU)); other causes include trauma, regional inflammation*, or vasculitis. They are most common at the femoral artery, but can also occur ...