A 33-Year Old with Wide Complex Tachycardia.
J, L. & MS, L. (2026). A 33-Year Old with Wide Complex Tachycardia.. Cardiac electrophysiology clinics. https://doi.org/10.1016/j.ccep.2026.06.005
J L, MS L. A 33-Year Old with Wide Complex Tachycardia.. Cardiac electrophysiology clinics. 2026; doi: 10.1016/j.ccep.2026.06.005
J L, MS L. A 33-Year Old with Wide Complex Tachycardia.[J]. Cardiac electrophysiology clinics. 2026. DOI: 10.1016/j.ccep.2026.06.005.
@article{j2026,
author = {Larson J and Lloyd MS},
title = {A 33-Year Old with Wide Complex Tachycardia.},
journal = {Cardiac electrophysiology clinics},
year = {2026},
doi = {10.1016/j.ccep.2026.06.005},
note = {PMID: 42580792},
}
TY - JOUR AU - Larson J AU - Lloyd MS TI - A 33-Year Old with Wide Complex Tachycardia. T2 - Cardiac electrophysiology clinics PY - 2026 DO - 10.1016/j.ccep.2026.06.005 AN - PMID:42580792 ER -
A 33-year-old woman presented to the emergency department (ED) with dizziness and palpitations and was found to be in wide complex tachycardia. EP study the following day showed consistent pre-excitation with atrial extra-stimuli. While unable to sustain tachycardia, a brief induced run displayed A-V dissociation with matching 12-lead morphology. VA conduction with RV pacing was concentric and decremental. Parahisian pacing ruled out a retrograde para-septal pathway. Working diagnosis of a nodo-ventricular pathway was made with further support from cessation of pre-excitation with adenosine administration. Electroanatomic mapping was performed with the earliest V mapped with pre-excited beats. Ablation at this site in the slow pathway region eliminated all pre-excitation, and the patient has remained symptom-free.