Paradoxical Embolism

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Paradoxical Embolism

Topic Overview

Normally, blood flows from the right side of the heart through the pulmonary arteries and lungs before it returns to the left side of the heart. A paradoxical embolism is a blood clot that does not travel with normal blood flow. This type of embolism often causes a stroke because the clot moves directly from the right side of the heart to the left through a hole (defect) in the septum, which separates the upper right and left heart chambers. It then bypasses the lungs and is pumped straight toward the brain.

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By Healthwise Staff
Primary Medical Reviewer E. Gregory Thompson, MD - Internal Medicine
Primary Medical Reviewer Anne C. Poinier, MD - Internal Medicine
Specialist Medical Reviewer Jeffrey S. Ginsberg, MD, MD - Hematology
Last Revised March 16, 2011

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