Adenosine-sensitive incessant right ventricular outflow tract ventricular tachycardia complicating fulminant lymphocytic myocarditis: Case report

Figure 1. Electrocardiograms of the patient. A: Monomorphic ventricular tachycardia with right ventricular outflow tract morphology. B: Electrocardiogram in sinus rhythm, showing sinus tachycardia and repolarization abnormalities with minor ST elevation in septal and inferior leads.

Figure 2. Histological section of the right ventricular septum myocardial sample demonstrating severe lymphocytic inflammatory infiltrates, associated with edema and extensive myocyte damage. The findings are suggestive of a severe lymphocytic myocarditis in the initial stages of organization.

Figure 3. Electrophysiologic study performed days after clinical stability and after weaning from venoarterial extracorporeal membrane oxygenation. Shown here is an example of programmed ventricular stimulation free of ventricular tachycardia induction, even with high-dose isoproterenol and extrastimuli up to S4.