title: Patent foramen ovale: a potential cause of refractory hypoxemia in off-pump coronary artery bypass surgery.
authors.forename: Sivakumar
authors.initials: S
authors.lastname: Periasamy
mesh_terms: D047549:Coronary Artery Bypass, Off-Pump / Q000009:adverse effects*; D054092:Foramen Ovale, Patent / Q000150:complications*; D006801:Humans; D000860:Hypoxia / Q000209:etiology*; D008297:Male; D008875:Middle Aged