Cardiac help... pretty please?

just to be clear here. . .asd. . .atrial septal defect, correct? there are several types of murmurs that the patient can have (from page 100, nurse's 5-minute clinical consult: diseases):

• early to midsystolic murmur at the 2nd or 3rd left intercostal space
  
• low-pitched diastolic murmur at the left lower sternal border which is more pronounced on inspiration
  
• late systolic murmur at the apex
  

you might want to read this article on emedicine: http://emedicine.medscape.com/article/889394-overview. there were about 5 articles on emedicine about asc, but this one is about the general concepts of asd. the only murmur it mentions is in relation to mitral valve prolapse and it is an apical holosystolic or late systolic murmur which is the 3rd one listed on the list above. the article also mentions systolic ejection murmur in the pulmonic area when there is right ventricular hypertrophy.

your question is interesting to me, so i am looking at what differential diagnosis in primary care, 4th edition, by r. douglas collins has to say about murmurs because taber's doesn't say a lot. this is a textbook for medical students. on page 308 it says this:

based on that information, since asd is an organic disease of the heart where the atrial septum is messed up anatomically, i would say that the answer to your question would be any diastolic murmur. that certainly makes the most sense. the other systolic murmurs would all fall into the category of being functional murmurs.

• http://www.fpnotebook.com/cv/exam/dstlcmrmr.htm - diastolic murmur
  
• http://www.cvphysiology.com/heart%20disease/hd008.htm - systolic and diastolic murmurs (read very carefully as it is talking about ventricular septal defect, not atrial)
  

You'll get a fixed split S2 (not varying during inspiration) and a systolic ejection murmur due to increased flow through the pulmonic valve after L->R flow via ASD if I recall correctly.