Chapters Transcript Video PFO and Stroke Anna Baer, M.D., discusses PFOs and Strokes. While PFOs are common, strokes in PFO patients are not common. So just because you find a PFO in your patient it does not mean they are going to have a stroke or that it needs to be closed. Published February 18, 2020 Created by Related Presenters Anna Baer, M.D. Cardiology View full profile