Hello -
What you're referring to as "
congenital heart disease" is actually a congenital structural heart abnormality, which may broadly be considered heart disease, but actually is a defect in a valve, and which should not, like coronary artery disease, be related to your partial ED problem. Further, if your ED was due to distraction and
anxiety related to the knowlege of your bicuspid aortic valve, you'd have more of a problem most likely (in terms of ED). However, again, men your age rarely have ED except due to some psychological issue, so this may be worth a look.
If Viagra works for you, then at least until you discover the underlying cause of the ED (and I certainly can't say that future research may not establish some up-til-now undiscovered link between bicuspid aortic valve and ED), you'll have an assist when you need it.
More importantly, I think, is that you have at least annual echocardiograms and a chest x-ray or MRI (or CT) to be sure you're not developing any dilation of the ascending aorta, for which there is a lifelong additional risk when bicuspid aortic valve is present.
I hope this answers your question. Good luck to you. Please follow up with us as needed.