A member asked:

How long does a blood clot stay in your leg before traveling to the heart? if a person has a pfo could this clot cause a stroke? how many hours/ days at the most can this process take?

A doctor has provided 1 answer
Dr. Eric Weisman answered

Specializes in Neurology

Paradoxical embolus: is an uncommon cause of embolic stroke. Straining on the toilet can create the pressure gradient necessary for the clot to cross from the right to the left side of the heart through a patent foramen ovale. The clot may take days to weeks to build up in the leg vein prior to this.

Answered 6/5/2018

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