Percutaneous closure of patent foramen ovale: pathophysiology, indications, and technique

The percutaneous closure of patent forame ovale (PFO) is currently performed in patients with cryptogenic stroke or paradoxical systemic embolism. The availability of new user friendly devices and the increase in knowledge of the pathophysiology, epidemiology, and follow-up of these patients has broadened the indications and drastically reduced the morbidity related to the intervention. This review considers the main pathophysiological and epidemiological features of PFO and discusses the indications and results of the intervention.