Hi Nancy, thanks for your post. Yes, my reason for having the PFO closure op is on the advice of the neurologist/cardiologist team that investigated my TIA of cryptogenic nature (i.e. not obviously attributed to lifestyle etc) and discussed risk analysis of a recurrence (c.5% higher than general population). They were non-committal on benefits to migraine post-procedure, stating evidence suggests one third see improvement, one third see no change, and - and this is the reason I'm trying to research this - one third see an increase in migraine symptoms! I know medical thinking has in the last few years returned to believing in the efficacy of closing the PFO, having had a lengthy period of not doing the procedure due to inconclusive evidence. Reading Trials conclusions is equally non-committal. I guess I'll go ahead with the closure on the basis of the TIA having happened... and hope for the best in terms of my migraine with aura.