title: Significance of late ventricular potentials in myotonic dystrophy.
abstract: In 39 patients with myotonic dystrophy, we found a high percentage of infrahissian cardiac conduction abnormalities (51%) and late potentials (46%), whereas spontaneous and inducible ventricular arrhythmias were rare. These results suggest that the prolongation of QRSD and the duration of the low-amplitude signal on the signal-averaged electrocardiogram were related to delayed activation of the His and Purkinje tissue rather than true late potentials.
authors.affiliation: Department of Cardiology B, Faculté de Médecine, Tours, France.
authors.forename: D
authors.initials: D
authors.lastname: Babuty
authors.forename: L
authors.initials: L
authors.lastname: Fauchier
authors.forename: D
authors.initials: D
authors.lastname: Tena-Carbi
authors.forename: P
authors.initials: P
authors.lastname: Poret
authors.forename: J
authors.initials: J
authors.lastname: Leche
authors.forename: M
authors.initials: M
authors.lastname: Raynaud
authors.forename: J P
authors.initials: JP
authors.lastname: Fauchier
authors.forename: P
authors.initials: P
authors.lastname: Cosnay
mesh_terms: D000328:Adult; D001283:Atrioventricular Node / Q000503:physiopathology; D002036:Bundle of His / Q000503:physiopathology; D005117:Cardiac Complexes, Premature / Q000503:physiopathology; D004562:Electrocardiography; D015716:Electrocardiography, Ambulatory; D005260:Female; D006327:Heart Block / Q000175:diagnosis / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009223:Myotonic Dystrophy / Q000175:diagnosis / Q000503:physiopathology*; D011690:Purkinje Fibers / Q000503:physiopathology; D012307:Risk Factors; D012815:Signal Processing, Computer-Assisted