Improvement of left ventricular function after changing the pacing site in a child with isolated congenital complete atrioventricular block and dilated cardiomyopathy
We report a case of isolated congenital complete atrioventricular block with left ventricular dysfunction after pacemaker implantation that improved after the pacing site was changed. During the neonatal period, a pacemaker wire was implanted on the right ventricular epicardium and pacing was initiated. Decreased ejection fraction and a perfusion defect around the septum on myocardial scintigraphy were observed during follow-up. Induced left bundle branch block was thought to be causing interventricular asynchrony, and the pacing site was change to the left ventricular epicardium. Ejection fraction improved and the perfusion defect resolved. Lead relocation may be useful for left ventricular dysfunction that develops during right ventricular pacing.
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Wilhelmina Childrens Hosp, Univ Med Ctr, Dept Pediat Cardiol, NL-3508 AB Utrecht, NetherlandsWilhelmina Childrens Hosp, Univ Med Ctr, Dept Pediat Cardiol, NL-3508 AB Utrecht, Netherlands
Blank, A. Christian
Hakim, Sara
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Univ Med Ctr, Dept Med Physiol, Div Heart & Lungs, NL-3584 CM Utrecht, NetherlandsWilhelmina Childrens Hosp, Univ Med Ctr, Dept Pediat Cardiol, NL-3508 AB Utrecht, Netherlands
Hakim, Sara
Strengers, Jan L.
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Wilhelmina Childrens Hosp, Univ Med Ctr, Dept Pediat Cardiol, NL-3508 AB Utrecht, NetherlandsWilhelmina Childrens Hosp, Univ Med Ctr, Dept Pediat Cardiol, NL-3508 AB Utrecht, Netherlands
Strengers, Jan L.
Tanke, Ronald B.
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Radboud Univ Nijmegen Med Ctr, Dept Pediat Cardiol, NL-6500 HB Nijmegen, NetherlandsWilhelmina Childrens Hosp, Univ Med Ctr, Dept Pediat Cardiol, NL-3508 AB Utrecht, Netherlands
Tanke, Ronald B.
van Veen, Toon A.
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Univ Med Ctr, Dept Med Physiol, Div Heart & Lungs, NL-3584 CM Utrecht, NetherlandsWilhelmina Childrens Hosp, Univ Med Ctr, Dept Pediat Cardiol, NL-3508 AB Utrecht, Netherlands
van Veen, Toon A.
Vos, Marc A.
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Univ Med Ctr, Dept Med Physiol, Div Heart & Lungs, NL-3584 CM Utrecht, NetherlandsWilhelmina Childrens Hosp, Univ Med Ctr, Dept Pediat Cardiol, NL-3508 AB Utrecht, Netherlands
Vos, Marc A.
Takken, Tim
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Wilhelmina Childrens Hosp, Univ Med Ctr, Child Dev & Exercise Ctr, NL-3508 AB Utrecht, NetherlandsWilhelmina Childrens Hosp, Univ Med Ctr, Dept Pediat Cardiol, NL-3508 AB Utrecht, Netherlands