A member asked:

What is the difference between a patent foramen ovale and atrial septum defect?

A doctor has provided 1 answer

Different: Patent foramen ovale is a temporary natural opening between two atria that allows fetal circulation to occur. Once born it closes spontaneously. An atrial septal defect is an abnormal opening between two atria that occurs due to incomplete formation of the atrial wall. It does not close spontaneously usually and may need surgery if it causes significant flow issues.

Answered 11/11/2012

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