Surgery in semisitting position for patients with patent foramen ovale: how dangerous is it?

Guenther C. Feigl, Karlheinz Decker, Boris Krischek, Rainer Ritz, Kristofer Ramina, Alireza Gharbaghi & Marcos S. Tatagiba
Objective: The actual risk for patients with patent foramen ovale (PFO) to suffer a clinically relevant air embolism during surgery in the semisitting position is not known. The semisitting position has been widely used in several centers for surgeries in the posterior cranial fossa (PCF). It reduces[for full text, please go to the a.m. URL]