The Defender 9001 dual chamber pacemaker defibrillator correctly diagnosed all 122 VT/VF episodes and 51 of 53 supraventricular tachyarrhythmias, offering improved diagnostic specificity.
Observational (n=18)
Yes
Does a dual chamber pacemaker defibrillator accurately diagnose tachycardia episodes compared to physician diagnosis in patients requiring an ICD?
A dual chamber pacemaker defibrillator demonstrated high diagnostic accuracy for tachyarrhythmias, offering improved specificity without loss of sensitivity.
The lack of specificity of VT detection is a significant shortcoming of current ICDs. In a French multicenter study, 18 patients underwent implantation of the Defender 9001 (ELA Medical), an ICD utilizing dual chamber pacing and arrhythmia detection. Over a mean follow-up period of 7.1 +/- 4.5 months, 176 tachycardia episodes recorded in the device memory were analyzed, and physician diagnosis was compared with that by the device. All 122 VT/VF episodes were correctly diagnosed, as were 51 of 53 supraventricular tachyarrhythmias. Two episodes of AF with rapid regular ventricular rates were treated as VT, and a third episode, treated as VT, could not be diagnosed with certainty. A dual chamber pacemaker defibrillator offers improved diagnostic specificity without loss of sensitivity, in addition to the hemodynamic benefit of dual chamber pacing.
Lavergne et al. (Wed,) conducted a observational in Ventricular tachyarrhythmias (n=18). Defender 9001 dual chamber pacemaker defibrillator was evaluated on Correct diagnosis of tachycardia episodes (device vs physician diagnosis). The Defender 9001 dual chamber pacemaker defibrillator correctly diagnosed all 122 VT/VF episodes and 51 of 53 supraventricular tachyarrhythmias, offering improved diagnostic specificity.
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