HeartRhythm Case Reports

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Volume 4, Issue 1, Pages (January 2007)
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Presentation transcript:

HeartRhythm Case Reports Precise mechanism of bradycardia after left atrial surgery using a superior transseptal approach  Ryudo Fujiwara, MD, PhD, Mitsuru Takami, MD, PhD, Yoichi Kijima, MD, Ryoji Nagoshi, MD, PhD, Amane Kozuki, MD, PhD, Junya Shite, MD, PhD  HeartRhythm Case Reports  DOI: 10.1016/j.hrcr.2019.01.008 Copyright © 2019 Terms and Conditions

Figure 1 The electrocardiogram after surgery showing junctional rhythm with retrograde P waves and an incessant atrial tachycardia with negative P waves in leads Ⅱ, Ⅲ, and aVF. HeartRhythm Case Reports DOI: (10.1016/j.hrcr.2019.01.008) Copyright © 2019 Terms and Conditions

Figure 2 A: The coronary sinus potentials and posterior right atrial potentials were recorded. Regular sinus rhythm potentials at 80 beats/min were recorded on the posterior right atrial catheter (*). However, junctional rhythm with retrograde atrial potentials were observed on the coronary sinus catheter. B: Electroanatomical activation mapping during sinus rhythm was created by using the CARTO 3 (Biosense Webster, Diamond Bar, CA). Sinus rhythm activation was observed in the right atrial lateral and posterior regions of the incisional line, including the sinus node. The red dotted line indicates the incisional line. HeartRhythm Case Reports DOI: (10.1016/j.hrcr.2019.01.008) Copyright © 2019 Terms and Conditions

Figure 3 A: The intracardiac electrograms were recorded during coronary sinus ostium pacing. The coronary sinus was captured by the pacing and atrioventricular conduction was observed. Dissociated sinus rhythm potentials were still recorded on the posterior right atrial catheter during coronary sinus pacing. Double potentials during sinus rhythm and a paced rhythm were recorded on the incisional line (*). B: Electroanatomical voltage mapping during coronary sinus pacing was created. The coronary sinus and right atrial tricuspid annulus side of the incisional line were captured by the coronary sinus pacing. The purple area represents a normal voltage (>1.0 mV). The red area is a low-voltage area (<0.5 mV). The black dotted line indicates the incisional line. The black circle indicates the pacing site. The yellow stars indicate the targeted right atrial lead position. HeartRhythm Case Reports DOI: (10.1016/j.hrcr.2019.01.008) Copyright © 2019 Terms and Conditions