Atrial Septal Defect, does it close or not? - USMLE Forums
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Old 03-08-2011
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Heart Atrial Septal Defect, does it close or not?

I am really confused about ASD ....... is it spontaneously close or rarely do such...?
--Kaplan book says --> usually close spontaneously in term infants
while
--UW says--> rarely close spontaneously and requires surgery
......???
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Old 03-08-2011
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The majority of isolated secundum ASDs <6 mm diameter in infants close spontaneously by two years, and some as late as 5 years of age. Thus, in the absence of associated symptoms, early closure is not indicated for these defects. Defects of moderate size (at least 6 to 8 mm in diameter) and larger are relatively unlikely to close spontaneously. However, closure of even moderate and large isolated secundum ASDs is not recommended in asymptomatic patients before 2 years of age due to the possibility, however small, of spontaneous closure.

Basically, ASD's in infants (<2 years) have a chance to close spontaneously if they are small but if they are large and detected after 2 years of age, they are less likely to close and would require surgery.

I know that's not really a definitive answer but I hope that helps
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Old 03-08-2011
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Quote:
Originally Posted by cerebrum85 View Post
--Kaplan book says --> usually close spontaneously in term infants
They are referring to foramen ovale, they are not refering to ASD.
For details about this read here
The difference between Foramen Ovale and Ostium Secondum
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Old 03-09-2011
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Default THX

THX 4 apx85 and steptaker ........ that was greatly helpful
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