Question

Atrial septal deffect have normal s1and s2 sound ??

Answer 1

"S1 is normal. S2 is louder than normal. In fact, you are hearing only the accentuated pulmonic component of S2 due to heart failure on the left side. A brief diamond shaped murmur will be heard in early systole and another brief diamond shaped murmur in early diastole."

I hope it is helpful for you.