Presentation is loading. Please wait.

Presentation is loading. Please wait.

Different rate-dependent responses between J waves and the notches on an epicardial local electrogram in a patient with idiopathic ventricular fibrillation 

Published byGertrud Böhm Modified over 5 years ago

Similar presentations

Presentation on theme: "Different rate-dependent responses between J waves and the notches on an epicardial local electrogram in a patient with idiopathic ventricular fibrillation "— Presentation transcript:

1 Different rate-dependent responses between J waves and the notches on an epicardial local electrogram in a patient with idiopathic ventricular fibrillation  Yosuke Kamikubo, MD, Yasuya Inden, MD, PhD, Tomoyuki Nagao, MD, PhD, Yoshifusa Aizawa, MD, PhD, Toyoaki Murohara, MD, PhD  HeartRhythm Case Reports  Volume 3, Issue 9, Pages (September 2017) DOI: /j.hrcr Copyright © 2017 Heart Rhythm Society Terms and Conditions

2 Figure 1 The 12-lead electrocardiogram (ECG) on admission and the epicardial electrograms. A: On admission, the standard 12-lead ECG showed J waves (as shown by arrows). Diagnostic J waves were present in leads I (0.12 mV) and III (0.13 mV). B: Epicardial electrograms were recorded in bipolar (Epi 1-2, 3-4, and 5-6) and unipolar (Uni 1, 2, 3) leads. In the unipolar leads, notches (arrowheads) are evident at the timing of the J waves on the surface ECG (arrow). The notches were augmented in the beat next to the premature ventricular stimulation when the R-R interval prolonged from 740 ms to 1180 ms. Epi = electrogram recorded by bipolar leads; RVA = right ventricular apex; Uni = electrogram recorded by unipolar leads. HeartRhythm Case Reports 2017 3, DOI: ( /j.hrcr ) Copyright © 2017 Heart Rhythm Society Terms and Conditions

3 Figure 2 The changes in local epicardial electrograms during atrial pacing. In the electrograms recorded by bipolar leads (Epi 1-2, 3-4, and 5-6), tiny electrical activities are extending out from the QRS complex. As the paced cycle length shortens, the duration shortens; for example, this effect can be seen in Epi 1-2 with a shortened interval from 126 ms to 105 ms. Notches are evident at the terminal portion of the main electrical activity in the electrograms recorded by unipolar leads. The timing of the peak of the notches is identical to that of the J wave on the surface electrocardiogram. The amplitude of the notches decreased in amplitude in each lead (Uni-1 to Uni-3). Epi = electrogram recorded by bipolar leads; Uni = electrogram recorded by unipolar leads. HeartRhythm Case Reports 2017 3, DOI: ( /j.hrcr ) Copyright © 2017 Heart Rhythm Society Terms and Conditions

Download ppt "Different rate-dependent responses between J waves and the notches on an epicardial local electrogram in a patient with idiopathic ventricular fibrillation "

Similar presentations

Epicardial access and ventricular tachycardia ablation in a postmyocarditis patient using a nonfluoroscopic catheter visualization system  Akiko Ueda,

Epicardial access and ventricular tachycardia ablation in a postmyocarditis patient using a nonfluoroscopic catheter visualization system  Akiko Ueda,
Abnormal epicardial electrophysiologic substrate in patients with early repolarization pattern and reduced left ventricular systolic function: A report.

Abnormal epicardial electrophysiologic substrate in patients with early repolarization pattern and reduced left ventricular systolic function: A report.
Electrical resynchronization induced by direct His-bundle pacing

Electrical resynchronization induced by direct His-bundle pacing
Atrioventricular hysteresis pacemaker mode promoting a short-long-short sequence at the onset of ventricular tachycardia  Neiberg de Alcantara Lima, MD,

Atrioventricular hysteresis pacemaker mode promoting a short-long-short sequence at the onset of ventricular tachycardia  Neiberg de Alcantara Lima, MD,
His-bundle pacing in a patient with dextrocardia, severe systolic dysfunction, and complete atrioventricular block  Manuel Molina-Lerma, MD, Juan Jiménez-Jáimez,

His-bundle pacing in a patient with dextrocardia, severe systolic dysfunction, and complete atrioventricular block  Manuel Molina-Lerma, MD, Juan Jiménez-Jáimez,
A subtype of idiopathic ventricular fibrillation and its relevance to catheter ablation and genetic variants  Takahiko Nishiyama, MD, Yoshiyasu Aizawa,

A subtype of idiopathic ventricular fibrillation and its relevance to catheter ablation and genetic variants  Takahiko Nishiyama, MD, Yoshiyasu Aizawa,
Intracoronary acetylcholine–induced augmentation of J waves: A case of idiopathic ventricular fibrillation  Shohei Kishi, MD, Koichi Fuse, MD, PhD, Hitoshi.

Intracoronary acetylcholine–induced augmentation of J waves: A case of idiopathic ventricular fibrillation  Shohei Kishi, MD, Koichi Fuse, MD, PhD, Hitoshi.
Recurrent commotio cordis: Déjà vu

Recurrent commotio cordis: Déjà vu
First case of epicardial ablation to coexistent J waves in the inferior leads in a patient with clinical diagnosis of Brugada syndrome  Shingo Maeda,

First case of epicardial ablation to coexistent J waves in the inferior leads in a patient with clinical diagnosis of Brugada syndrome  Shingo Maeda,
A case of scar-related ventricular tachycardia demonstrating termination with nonglobal capture at the site of concealed entrainment with dual slow conduction.

A case of scar-related ventricular tachycardia demonstrating termination with nonglobal capture at the site of concealed entrainment with dual slow conduction.
Two mechanisms of termination of idiopathic reentrant ventricular tachycardia originating from the left coronary cusp/right coronary cusp commissure with.

Two mechanisms of termination of idiopathic reentrant ventricular tachycardia originating from the left coronary cusp/right coronary cusp commissure with.
Ben Ng, MBBS, Robert W. Giles, MBBS, Zal Dastur, BSc, Mark A

Ben Ng, MBBS, Robert W. Giles, MBBS, Zal Dastur, BSc, Mark A
Is it bradycardia or something else causing symptoms?

Is it bradycardia or something else causing symptoms?
Novel CALM3 mutations in pediatric long QT syndrome patients support a CALM3- specific calmodulinopathy  Marie-A. Chaix, MD, MSc, Tamara T. Koopmann, PhD,

Novel CALM3 mutations in pediatric long QT syndrome patients support a CALM3- specific calmodulinopathy  Marie-A. Chaix, MD, MSc, Tamara T. Koopmann, PhD,
Use of topical lidocaine in eliminating mechanically stimulated ventricular fibrillation in a patient with short QT syndrome  Maria J. Farag, BS, Joseph.

Use of topical lidocaine in eliminating mechanically stimulated ventricular fibrillation in a patient with short QT syndrome  Maria J. Farag, BS, Joseph.
Response to atrial arrhythmias in an atrioventricular synchronous ventricular leadless pacemaker: A case report in a paroxysmal atrial fibrillation patient 

Response to atrial arrhythmias in an atrioventricular synchronous ventricular leadless pacemaker: A case report in a paroxysmal atrial fibrillation patient 
HeartRhythm Case Reports

HeartRhythm Case Reports
Irregular wide QRS complex tachycardia in a patient with pulmonary hypertension: What is the mechanism?  Abigail Louise D. Te, MD, Fa-Po Chung, MD, Yenn-Jiang.

Irregular wide QRS complex tachycardia in a patient with pulmonary hypertension: What is the mechanism?  Abigail Louise D. Te, MD, Fa-Po Chung, MD, Yenn-Jiang.
Resolution of the functional retrograde right bundle branch block during antidromic atrioventricular reciprocating tachycardia  Keiko Takahashi, MD, PhD,

Resolution of the functional retrograde right bundle branch block during antidromic atrioventricular reciprocating tachycardia  Keiko Takahashi, MD, PhD,
Pitfalls of pacemaker detection of ventricular high-rate events

Pitfalls of pacemaker detection of ventricular high-rate events

Similar presentations

Ads by Google