Significance of late ventricular potentials in myotonic dystrophy

D Babuty; L Fauchier; D Tena-Carbi; P Poret; J Leche; M Raynaud; J P Fauchier; P Cosnay

doi:10.1016/s0002-9149(99)00510-x

Significance of late ventricular potentials in myotonic dystrophy

Am J Cardiol. 1999 Nov 1;84(9):1099-101, A10. doi: 10.1016/s0002-9149(99)00510-x.

Authors

D Babuty¹, L Fauchier, D Tena-Carbi, P Poret, J Leche, M Raynaud, J P Fauchier, P Cosnay

Affiliation

¹ Department of Cardiology B, Faculté de Médecine, Tours, France.

PMID: 10569675
DOI: 10.1016/s0002-9149(99)00510-x

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.

MeSH terms

Adult
Atrioventricular Node / physiopathology
Bundle of His / physiopathology
Cardiac Complexes, Premature / physiopathology
Electrocardiography*
Electrocardiography, Ambulatory
Female
Heart Block / diagnosis
Heart Block / physiopathology
Heart Ventricles / physiopathology*
Humans
Male
Middle Aged
Myotonic Dystrophy / diagnosis
Myotonic Dystrophy / physiopathology*
Purkinje Fibers / physiopathology
Risk Factors
Signal Processing, Computer-Assisted*