Hi Doctor, My wife has been recently diagnosed with ASD . The size as per the ECHO is 21MM. She is 38, very athletic, 49KG weight. She was having trouble breathing after being on the treadmill for 15 minutes and when investigated we found out about ASD. The doctors have provided 2 options i.e. catheterization (walls are above 4MM and hence the doctors feel she can be a good candidate for cath), or open heart surgert to repair the ASD. Our dilemma is which one is better or in this case which one is good for her? given the fact that catheterisation is a relatively new procedure with no long term data availability. Your recommendation will be highly appreciated, Regards, Nazim