Why the study?
Can temporary ventricular pacing in a patient with a defective permanent pacemaker induce Torsades de pointes?
Can temporary ventricular pacing in a patient with a defective permanent pacemaker induce Torsades de pointes?
Temporary ventricular pacing in a patient with a defective permanent pacemaker can lead to potentially fatal Torsades de pointes due to pacemaker interaction.
Potential interaction between temporary and defective permanent pacemakers may cause torsades; leaves open frequency and prevention strategies.
Torsades de pointes, a distinctive type of polymorphous ventricular tachycardia, may be induced by critically timed ventricular stimulation during electrophysiologic studies or, rarely, in patients with temporary or permanent ventricular pacemakers. The following case illustrates how, when temporary ventricular pacing is instituted to maintain heart rate in a patient with a defective permanent ventricular pacemaker, this potentially fatal arrhythmia may occur as a complication of interaction between the two pacemakers.
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Janosik et al. (1985) studied this question.
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