Key result
Biventricular pacemaker implantation successfully achieved synchronous activation of the systemic ventricle and improved exercise capacity in a patient with congenitally corrected transposition.
Why the study?
Does biventricular pacing improve mechanical dyssynchrony and exercise capacity in a pediatric patient with congenitally corrected transposition of the great arteries and pacing-induced heart failure?
Case Report (n=1)
Does biventricular pacing improve mechanical dyssynchrony and exercise capacity in a pediatric patient with congenitally corrected transposition of the great arteries and pacing-induced heart failure?
Biventricular pacing can successfully reverse pacing-induced mechanical dyssynchrony and improve symptoms in patients with congenitally corrected transposition of the great arteries.
Suggests biventricular pacing may aid select cases with congenitally corrected transposition; leaves open need for prospective trials.
We report the case of a 13-year-old girl with congenitally corrected transposition of the great arteries. Since the implantation of a conventional pacemaker for acquired complete atrioventricular block, the patient experienced increased heart failure symptoms. Using triplane tissue Doppler imaging, significant intraventricular dyssynchrony induced by unilateral pacing and associated with diminished exercise capacity was demonstrated. A biventricular pacemaker was successfully implanted transvenously, leading to synchronous activation of the systemic ventricle and improved exercise capacity.
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Veire et al. (2006) conducted a case report in Congenitally corrected transposition of the great arteries (n=1). Biventricular pacemaker implantation vs. Conventional pacemaker (unilateral pacing) was evaluated on Synchronous activation of the systemic ventricle and improved exercise capacity. Biventricular pacemaker implantation successfully achieved synchronous activation of the systemic ventricle and improved exercise capacity in a patient with congenitally corrected transposition.
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