title: Intraoperative identification of the conduction system in repair of endocardial cushion defect.
abstract: Electrophysiological identification intraoperatively of the His-Purkinje system eliminates the complication of complete heart block consequent upon repair of endocardial cushion defect (ECD). Ten patients, 6 with complete ECD and 4 with incomplete ECD, underwent repair of the defect. None of the patients developed heart block. Slight variations were noted in the location of the His bundle in 9 patients, and a major deviation was found in 1 patient with incomplete ECD. The data support the use of intraoperative recordings as a necessary acconpaniment to the operative repair of ECD.
mesh_terms: D002036:Bundle of His; D002675:Child, Preschool; D004562:Electrocardiography; D006321:Heart / Q000503:physiopathology*; D006327:Heart Block / Q000517:prevention & control*; D006329:Heart Conduction System; D006343:Heart Septal Defects / Q000601:surgery*; D006801:Humans; D007223:Infant; D011690:Purkinje Fibers