First Human Implant With Cardiac Contractility Modulation in a Patient With an Extravascular Implantable Cardioverter-Defibrillator

Figures

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  Figure 1. Baseline Electrocardiogram of the Patient Electrocardiogram done in the clinic showing sinus rhythm, QRS duration of 84 ms, and left anterior fascicular block.

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  Figure 2. Chest X-Ray Post Op Chest x-ray showing anteroposterior (left) and lateral (right) EV-ICD, CCM and Chemo-port. Abbreviations as in Figure 1.

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  Figure 3. Extravascular Implantable Cardioverter-Defibrillator Parameters Extravascular implantable cardioverter-defibrillator change in sensing 0.8 mV (nominal left) vs 19.3 mV with cardiac contractility modulation (right).

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  Figure 4. Cardiac Contractility Modulation Parameters Normal sensing and programming of the cardiac contractility modulation device.

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  Figure 5. Multistep Basic Sensing Process12 Filtered and rectified R waves with marker channel depicts sinus bradycardia with RR interval 1520 ms. Extravascular implantable cardioverter defibrillator multistep sensing profile is shown in orange and features of sensing profile in blue, with nominal values in parentheses. ∗Programmable parameters. VS = ventricular sensed event.

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  Visual Summary. Principal Learning Highlights CCM = cardiac contractility modulation; EV-ICD = extravascular implantable cardioverter-defibrillator.