title: 'You didn't see them, but now you do!': use of balloon occlusion angiography in the identification of systemic venous anomalies before and after cavopulmonary procedures.
abstract: We describe the importance of angiographic identification of collateral venous channels by balloon occlusion venography after bidirectional cavopulmonary connections. Use of the balloon occlusion technique is essential for identification of these vessels, as they can easily be missed by standard venous angiography, with possible clinical consequences for postoperative management.
authors.affiliation: Department of Pediatrics, The University of Toronto Faculty of Medicine, Canada.
authors.forename: C
authors.initials: C
authors.lastname: Ovaert
authors.forename: L H
authors.initials: LH
authors.lastname: Filippini
authors.forename: L M
authors.initials: LM
authors.lastname: Benson
authors.forename: R M
authors.initials: RM
authors.lastname: Freedom
mesh_terms: D006348:Cardiac Surgical Procedures; D002404:Catheterization; D002648:Child; D002675:Child, Preschool; D003097:Collateral Circulation; D017023:Coronary Angiography; D018611:Heart Bypass, Left; D006801:Humans; D007223:Infant; D010690:Phlebography / Q000379:methods*; D011300:Preoperative Care; D011651:Pulmonary Artery / Q000000981:diagnostic imaging; D014683:Vena Cava, Superior / Q000002:abnormalities / Q000000981:diagnostic imaging*