Case Report of a Recurrent Monomorphic Ventricular Tachycardia in a
Patient with Myocarditis - Importance of Targeting Midmyocardial
Anatomic Substrate
- Usha Tedrow,
- Uyanga Batnyam,
- Carolina Hoyos-Ochoa,
- Jorge Romero
Usha Tedrow
Brigham and Women's Hospital Division of Cardiovascular Medicine
Author ProfileUyanga Batnyam
Brigham and Women's Hospital Division of Cardiovascular Medicine
Author ProfileCarolina Hoyos-Ochoa
Brigham and Women's Hospital Division of Cardiovascular Medicine
Author ProfileAbstract
A 56-year-old man with non-ischemic cardiomyopathy with three prior
ablations targeting two different MMVTs presented with recurrent VT.
Therefore, he underwent epicardial mapping with adjuvant CT imaging
which demonstrated midmyocardial scar. Fractionated potentials noted
during mapping in this region, and entrainment suggested inner loop.
Interestingly, pacing showed two different QRS morphologies identical to
his previously ablated VTs with a long stim-QRS at this region.
Epicardial ablation carried on during the VT successfully terminated it,
but the VT remained inducible and required endocardial ablation to make
it noninducible. The patient has been VT-free for 12 months following
this ablation off antiarrhythmic drugs.22 Apr 2024Submission Checks Completed 22 Apr 2024Assigned to Editor
23 Apr 2024Reviewer(s) Assigned
11 Jun 20241st Revision Received
30 Jun 2024Review(s) Completed, Editorial Evaluation Pending