title: Pacing difficulties due to persistent left superior vena cava.
authors.affiliation: 1st University Department of Cardiology, Hippokration Hospital, 22, Miltiadou Str., 15561 Athens, Greece. hrodil1@yahoo.com
authors.forename: Polychronis
authors.initials: P
authors.lastname: Dilaveris
authors.forename: Skevos
authors.initials: S
authors.lastname: Sideris
authors.forename: Christodoulos
authors.initials: C
authors.lastname: Stefanadis
mesh_terms: D000368:Aged; D001021:Aortic Valve / Q000601:surgery; D001145:Arrhythmias, Cardiac / Q000628:therapy*; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D005471:Fluoroscopy; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial; D014683:Vena Cava, Superior / Q000002:abnormalities*