Thanks for writing in.
I am a qualified an certified cardiologist. I read your mail with diligence.
With the limitation that longevity of a person is depends on factor which are beyond human control, I am answering your question on basis of what has been my experience of three decades in cardiology and what medical science says.
After correction of partial anomalous venous connection without atrial septal defect
a person is expected to have similar life span as any other person who did not have any congenital heart disease
. Provided he had developed any significant pulmonary hypertension
or he did not have any associated significant arrhythmia
. (I do not see any evidence of either in your mail)
With Best Wishes.
Dr Anil Grover