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Anterograde and retrograde insulated pathway conduction evidenced by intracardiac electrogram morphologies during premature ventricular contractions and.

Published byDalibor Kučera Modified over 5 years ago

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Presentation on theme: "Anterograde and retrograde insulated pathway conduction evidenced by intracardiac electrogram morphologies during premature ventricular contractions and."— Presentation transcript:

1 Anterograde and retrograde insulated pathway conduction evidenced by intracardiac electrogram morphologies during premature ventricular contractions and sinus rhythm  Seina Yagyu, MD, Koichi Nagashima, MD, PhD, Ryuta Watanabe, MD, Masaru Arai, MD, Yuji Wakamatsu, MD, Naoto Otsuka, MD, Yasuo Okumura, MD, PhD  HeartRhythm Case Reports  Volume 5, Issue 3, Pages (March 2019) DOI: /j.hrcr Copyright © 2018 Heart Rhythm Society Terms and Conditions

2 Figure 1 A: Twelve-lead electrocardiogram recorded during the procedure showing sinus rhythm (SR) and a premature ventricular contraction (PVC). B, C: Pace-maps obtained from the ablation sites in the right ventricular outflow tract (RVOT) (B) and the left ventricular outflow tract (LVOT) (C). HeartRhythm Case Reports 2019 5, DOI: ( /j.hrcr ) Copyright © 2018 Heart Rhythm Society Terms and Conditions

3 Figure 2 Intracardiac electrograms obtained at the right ventricular outflow tract (RVOT) (A) and left ventricular outflow tract (B) before ablation, and the left ventricular tract after successful ablation (C). D: Intracardiac echocardiogram recorded for electroanatomic assessment of the site of the successful ablation. Recording from the ablation catheter (ABL) shows the point of successful ablation was at the right coronary cusp (RCC)–left coronary cusp (LCC) commissure. Pink tag indicates the site of earliest activation in the right ventricular outflow tract. LPO = left posterior oblique; NCC = noncoronary cusp; PVC = premature ventricular contraction; SR = sinus rhythm. HeartRhythm Case Reports 2019 5, DOI: ( /j.hrcr ) Copyright © 2018 Heart Rhythm Society Terms and Conditions

4 Figure 3 Comparison of the vertically and horizontally flipped presystolic electrogram preceding the premature ventricular contraction (PVC) and electrogram showing the late potential during sinus rhythm (SR). The configurations nearly match. Bidirectional conduction of the insulated myocardial pathway is represented schematically. Ao = aorta; LVOT = left ventricular outflow tract; RVOT = right ventricular outflow tract. HeartRhythm Case Reports 2019 5, DOI: ( /j.hrcr ) Copyright © 2018 Heart Rhythm Society Terms and Conditions

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