Mapping and ablation of trigger premature ventricular contractions in a case of electrical storm associated with ischemic cardiomyopathy.
We report a case of polymorphic ventricular tachycardia and ventricular fibrillation (PVT/VF) storm associated with ischemic cardiomyopathy (ICM). The electrocardiogram (ECG) monitor revealed frequent premature ventricular contractions (PVCs) initiated PVT/VF. Electroanatomic mapping revealed the plausible origins of PVCs were located in the scar border zone at the posterior septum of the left ventricle. Purkinje-like potentials (PLPs) always preceded PVCs and a decremental property for the PLPs and infarcted myocardium junction was observed. Ablation at these sites eliminated both PVCs and PVT/VF.
Okada
Taro
T
Division of Cardiology, Aichi Prefectural Cardiovascular and Respiratory Center, Ichinomiya, Japan. taro1973@hh.iij4u.or.jp
Yamada
Takumi
T
Murakami
Yoshimasa
Y
Yoshida
Naoki
N
Ninomiya
Yuuichi
Y
Toyama
Junji
J
D018780:Body Surface Potential Mapping / Q000379:methods*; D002304:Cardiac Pacing, Artificial; D002313:Cardiomyopathy, Restrictive / Q000150:complications / Q000175:diagnosis* / Q000628:therapy*; D017115:Catheter Ablation; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D008875:Middle Aged; D016896:Treatment Outcome; D018879:Ventricular Premature Complexes / Q000150:complications / Q000175:diagnosis* / Q000628:therapy*