Pacing-Induced Cardiomyopathy in a Transplanted Heart Treated With Left Bundle Branch Pacing

Figures

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  Figure 1. Electrocardiogram 17 Months After Orthotropic Heart Transplantation Demonstrates Atrial Sensed Right Ventricular Apical Pacing

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  Figure 2. Electrograms at the His-Bundle Region Shows Atrial Signals Followed by His-Bundle Potentials Without Conduction to the Ventricle, Confirming His-Ventricular Block Atrial electrogram shows His-bundle potentials without conduction to the ventricle, confirming His-ventricular block.

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  Figure 3. Posteroanterior and Lateral Chest X-Rays of the Left Bundle Branch Pacing Lead Location (Arrow)

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  Figure 4. Electrocardiogram After the Procedure Electrocardiogram shows injury current, right bundle branch block pattern, and memory T waves in the precordial leads.

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  Figure 5. Electrocardiogram at 3 Months After Upgrade The QRS remains relatively narrow, and T waves have returned to their previous morphology.

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  Figure 6. Echocardiogram at 3 Months After Upgrade (A) Long-axis apical and (B) short-axis views of the patient's heart on echocardiogram. The pacing lead (red arrows) is buried securely in the left ventricular septal subendocardium.