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Case Reports
. 2022 Sep 22;8(12):840-844.
doi: 10.1016/j.hrcr.2022.09.010. eCollection 2022 Dec.

Localized intramural reentry confined within the ventricular septum in lamin cardiomyopathy

Jake Martinez  1 , Rong Bai  1 , Marwan Bahu  1 , Michael F Morris  1 , J Peter Weiss  1 , Roderick Tung  1
Affiliations
Case Reports

Localized intramural reentry confined within the ventricular septum in lamin cardiomyopathy

Jake Martinez et al. HeartRhythm Case Rep. .
No abstract available

Keywords: Interventricular septum; Intramural; Lamin cardiomyopathy; Midmyocardial; Reentry; Septal perforator vein; Ventricular tachycardia.

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Figures

Figure 1
Figure 1
A: Midmyocardial septal scar and mapping catheters positioned to map ventricular tachycardia (VT) activation. A duodecapolar catheter (DD) was positioned along the right ventricular septum and ablation catheter (Abl) on the left ventricular septum via transseptal approach. A 2F mapping catheter was positioned with the 2 most distal electrodes within the septal perforating vein (SPV). B: An intraseptal fractionated late potential is recorded from within the SPV, which yields a near-perfect pace map match for the clinical induced VT with stimulus-to-QRS latency. GCV = great cardiac vein; LAO = left anterior oblique; SP = septal perforator vein; RAO = right anterior oblique.
Figure 2
Figure 2
A: Continuous strip from sinus rhythm with induction of ventricular tachycardia (VT) with triple extrastimuli (500-300-260-250 ms) to demonstrate constant gain and minimal baseline noise. Five beats of the drive cycle have been removed. The intraseptal late potential (SPd) recorded during pacing rhythm become pandiastolic during VT. B: Twelve-lead electrocardiogram of VT (tachycardia cycle length 360 ms) with septal perforating vein recording spanning entirety of diastole at 150 mm/s.
Figure 3
Figure 3
Activation mapping (A) and concealed entrainment (B) of ventricular tachycardia with termination during radiofrequency delivery (C). The intraseptal late potential is finally eliminated and dissociated after ablation from the right ventricular side of the septum. AIV = anterior interventricular vein; GCV = great cardiac vein; LV = left ventricle; RVOT = right ventricular outflow tract; SPV = septal venous perforators.
See this image and copyright information in PMC

References

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