Journal of cardiovascular electrophysiology
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J. Cardiovasc. Electrophysiol. · Jan 2009
Controlled Clinical TrialVariability of the diagnostic ECG pattern in an ICD patient population with Brugada syndrome.
The spontaneous presence of a coved-type ECG is considered as an important risk factor in Brugada syndrome. However, diagnosis making and risk stratification may be hampered by the dynamic nature of the ECG abnormalities. The objective of this study was to determine the variability and predictive value of the electrocardiogram in Brugada patients implanted with a cardioverter-defibrillator (ICD). ⋯ Analysis of serial ECG recordings in an ICD patient population shows that the Brugada-ECG pattern is highly variable over time. In patients with spontaneous coved-type ECG, only every third ECG is diagnostic and every third ECG normal. Patients with spontaneous coved-type ST-segment elevation have a high incidence of appropriate shocks. Spontaneous saddleback-type electrocardiograms are not helpful for risk stratification.
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J. Cardiovasc. Electrophysiol. · Jan 2009
Long- and short-term temporal stability of complex fractionated atrial electrograms in human left atrium during atrial fibrillation.
Complex fractionated atrial electrograms (CFAEs) have been reported as targets for catheter ablation of atrial fibrillation (AF). However, the temporal stability of CFAE sites remains poorly defined. ⋯ CFAEs recorded in the LA during AF display high temporal stability in patients with persistent AF. The clinical significance of our findings warrants further investigation.
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J. Cardiovasc. Electrophysiol. · Jan 2009
Clinical TrialA prospective pediatric clinical trial of digital music players: do they interfere with pacemakers?
There has been recent concern in the media about iPod interference with pacemakers. We systematically tested two types of digital music players (DMP) on pacemaker or ICD function in children. ⋯ Interference with pacemaker function could not be shown with iPod or MP3 players. No additional precaution beyond standard is necessary for patients with pacemakers when they are using these players.