Why the left atrium does not enlarge in ASD even though the shunt traverses this chamber ?
ASD is the most common acyanotic heart disease with left to right shunt . Highest qp/qs are seen with ASDs
The shunt begins from left atrium and goes on to complete a circuit.
LA——-ASD———RA————RV———-MPA———-LA
In this circuit all chambers enlarge except the LA . (Inspite of the fact about 200-300 % cardiac output traverses this chamber )
Why ?
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Source: Dr.S.Venkatesan MD - Category: Cardiology Authors: drsvenkatesan Tags: cardiology -congenital heart disease Infrequently asked questions in cardiology (iFAQs) ATRIAL SEPTAL DEFECT ra rv mpa enlarged LA normal in ASD Source Type: blogs