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Case Reports
. 2023 Dec 9;10(3):182-185.
doi: 10.1016/j.hrcr.2023.12.001. eCollection 2024 Mar.

Distinct single spiky component of local abnormal ventricular activity and accurate identification of origin of premature ventricular complexes arising from left ventricular summit

Kohei Tashiro  1   2 , Tomo Komaki  1 , Akihito Ideishi  1 , Noriyuki Mohri  1 , Shin-Ichiro Miura  1 , Masahiro Ogawa  1   2   3
Affiliations
Case Reports

Distinct single spiky component of local abnormal ventricular activity and accurate identification of origin of premature ventricular complexes arising from left ventricular summit

Kohei Tashiro et al. HeartRhythm Case Rep. .
No abstract available

Keywords: 2F microelectrode catheter; 3-D mapping system; Left ventricular summit; Local abnormal ventricular activity; Premature ventricular complex.

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Figures

Figure 1
Figure 1
A–C: Twelve-lead electrocardiogram (ECG) during sinus rhythm (A), clinical premature ventricular complex (PVC) (B), and electrical bipolar stimulation from the earliest site of distal bipolar microelectrodes (CS 1-2) with excellent match for the QRS complex of clinical PVCs (C). D–F: Surface ECG (I, II, and V1) and intracardiac electrograms during sinus rhythm (D), clinical PVC (E), and electrical stimulation from CS 1-2 (F). Red arrows indicate a single spiky component of local abnormal ventricular activity, late potential during sinus rhythm (D) and prepotential during clinical PVC (E). CS = coronary sinus; HIS = His bundle electrogram; RV = right ventricular apex.
Figure 2
Figure 2
A: Fluoroscopic image. B: Impedance-based electroanatomical mapping images. C: Intracardiac electrogram at CS 1-2 and ABL-d. The red arrows show the delayed single spiky component of the local abnormal ventricular activity (LAVA) at CS 1-2 and far-field delayed potential of the LAVA at ABL-d during sinus rhythm, respectively. D: Intracardiac electrogram taken immediately after radiofrequency application. The solid and dotted black rectangles indicate the potential of the distal coronary sinus microelectrodes during sinus rhythm and at the 4 beats after radiofrequency (RF) application, respectively. The solid and dotted red arrows indicate the single spiky component of LAVA and its disappearance at the 4 beats after RF application, respectively. ABL-d = distal site of the ablation catheter; HIS = His bundle electrogram; RAO = right anterior oblique 30° view; RV = right ventricular apex.
See this image and copyright information in PMC

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References

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