Mycotic aneurysm is caused by what?

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Study for the ARRT Ultrasound Test. Engage with flashcards and multiple choice questions, each question offers hints and detailed explanations. Prepare thoroughly for your certification exam!

Multiple Choice

Mycotic aneurysm is caused by what?

Explanation:
Infection of the arterial wall weakens the vessel and allows it to dilate, producing a mycotic aneurysm. The most common cause is a bacterial infection, often from bacteremia or septic emboli spreading to the vessel wall, which damages the wall’s layers and leads to dilation. While atherosclerosis, trauma, and thrombosis can cause aneurysms in other scenarios, they involve degeneration, direct injury, or clotting rather than infection of the wall. Therefore, bacterial infection best explains the formation of a mycotic aneurysm.

Infection of the arterial wall weakens the vessel and allows it to dilate, producing a mycotic aneurysm. The most common cause is a bacterial infection, often from bacteremia or septic emboli spreading to the vessel wall, which damages the wall’s layers and leads to dilation. While atherosclerosis, trauma, and thrombosis can cause aneurysms in other scenarios, they involve degeneration, direct injury, or clotting rather than infection of the wall. Therefore, bacterial infection best explains the formation of a mycotic aneurysm.

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