I have not gone through a procedure like this personally, but as a physician have participated in PFO closure on multiple occasions and as an electrophysiologist, have crossed the intraatrial
septumSepta
Septoplasty on numerous occasions. It is not a difficult procedure, but as with any procedure out there, it is important to understand its risks which I am sure your doctor went over with you. Make sure that your physician is an experienced operator and has performed these in the past on more than just a few occasions.