A sudden tear in the intimal lining of the artery causing a false lumen is called what?

A sudden tear in the intimal lining of the artery causing a false lumen is called what?

• A. Aneurysm
• B. Embolism
• C. Stenosis
• D. Dissection

Answer: (D)

Dissection happens when a tear in the inner lining of an artery allows blood to enter the wall itself, splitting the wall and creating a second, false channel alongside the true lumen. This intimal tear and the resulting false lumen can cause a flap that may obstruct flow or propagate along the vessel, leading to reduced distal perfusion or ischemia. This concept is distinct from an aneurysm, which is a dilation of the vessel wall; an embolism, which is a clot or debris traveling to block a downstream vessel; and stenosis, which is narrowing of the vessel rather than a tear forming a separate channel. Recognizing a dissection involves thinking about the dual-lumen scenario and the intimal flap that defines the separation within the vessel wall.

Dissection happens when a tear in the inner lining of an artery allows blood to enter the wall itself, splitting the wall and creating a second, false channel alongside the true lumen. This intimal tear and the resulting false lumen can cause a flap that may obstruct flow or propagate along the vessel, leading to reduced distal perfusion or ischemia. This concept is distinct from an aneurysm, which is a dilation of the vessel wall; an embolism, which is a clot or debris traveling to block a downstream vessel; and stenosis, which is narrowing of the vessel rather than a tear forming a separate channel. Recognizing a dissection involves thinking about the dual-lumen scenario and the intimal flap that defines the separation within the vessel wall.