[Mid-term complications of automatic implantable cardiac defibrillators].

The incidence and the nature of medium-term complications of automatic implantable cardiac defibrillators (AICD) were studied. Seventy-nine AICD were implanted in 50 consecutive patients (42 men, aged 54.5 +/- 13.

Significance of late ventricular potentials in myotonic dystrophy.

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.

Is it possible to identify infrahissian cardiac conduction abnormalities in myotonic dystrophy by non-invasive methods?

Objective: To identify intracardiac conduction abnormalities in patients with myotonic dystrophy from their clinical, ECG, and genetic features.

Methods: 39 consecutive patients (mean (SD) age 42. 9 (12.