Do atrial tachyarrhythmias beget ventricular tachyarrhythmias in defibrillator recipients?
Dual tachycardia is common in ICD recipients with a history of AT/AF. The duration of AT/AF preceding the first VT/VF detection is<or =1 h about 50% of the time. Termination of the AT/AF significantly delays the time to the next VT/VF detection.
Adrenergic pathway polymorphisms are associated with mortality in ACS patients receiving BB in a race-specific manner. Understanding the mechanism by which different genes impact post-ACS mortality differently in Caucasians and African Americans might illuminate opportunities to improve BB therapy in these groups.