Late Complete Heart Block in an Adult Patient undergoing Percutaneous Ventricular Septal Defect Closure

Figure 1. (A) Left ventriculography in a LAO cranial projection demonstrating fenestrated perimembranous
ventricular septal defect (Arrow).
(B) Following successful deployment of an Amplatzer Cribiform
™ atrial septal occluder in the aneurysmal component of the membranous ventricular septum.
Figure 2. (A) 12-lead electrocardiogram (ECG) prior to the procedure demonstrating
right ventricular hypertrophy, right bundle-branch block and normal QRS duration.
(B) Immediate post procedure 12-lead ECG with no change in the QRS duration from
the previous ECG.
(C) ECG performed at 2-month follow up confirming unchanged
QRS duration and morphology.
(A) Electrocardiogram (ECG) demonstrating sinus rhythm with marked prolongation of the
QRS duration compared to the previous ECG.
(B) Telemetry strips demonstrating complete heart block
with nonconducted P waves.
Author(s): 

Nicholas J. Collins, FRACP, *Lee Benson, FRCPC, Eric M. Horlick, FRCPC



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