Key result
Severe tricuspid regurgitation and progressive right-side dilatation may be precipitating factors for late complete heart block following tetralogy of Fallot repair.
Why the study?
Complete heart block is a rare but serious sequela following repair of tetralogy of Fallot.
Case Report (n=1)
Late complete heart block can occur post-TOF repair, potentially precipitated by progressive right-side dilatation from severe tricuspid regurgitation.
May warrant monitoring for late heart block in repaired tetralogy of Fallot with severe tricuspid regurgitation; hypothesis-generating and requires prospective validation.
Tetralogy of Fallot (TOF) is the most common form of cyanotic congenital heart disease beyond the age of 3 months. Complete heart block (CHB) is rare but a serious sequalae post-repair of TOF. We present a case of an 18-month-old child who developed late CHB after around 1 year of the corrective surgery of the congenital anomaly. On the regular follow-up visit, the patient assessment was unremarkable. However, there was bradycardia, 55 beats/min. The ECG showed complete atrioventricular dissociation. Echocardiogram was done and demonstrated severe tricuspid regurgitation (TR). The patient required a permanent pacemaker and he is currently well. We are presenting this case as a late unexpected CHB, with a possibility of progressive right-side dilatation as a contributing factor to CHB due to severe TR.
No takes yet. Share an insight, caveat, or question.
Hejazi et al. (2019) conducted a case report in Tetralogy of Fallot (n=1). Severe tricuspid regurgitation and right-sided dilatation was evaluated on Development of late complete heart block. Severe tricuspid regurgitation and progressive right-side dilatation may be precipitating factors for late complete heart block following tetralogy of Fallot repair.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: