2:1 Atrioventricular Conduction due to Congenital Long QT Syndrome
01 December 2017 (online)
Long QT syndrome patients can present as second-degree AV block due to prolongation of refractory period. We report a case of pseudo 2:1 AV block due to long QT syndrome in which treatment differs from conventional second-degree AV block because of uncommon presentation and poor prognosis with no consensus.
- 1 Cevik BS, Cevik A, Tavli E. Second degree heart block associated with QT prolongation. Indian Pacing Electrophysiol J 2010; 10 (02) 96-98
- 2 Rosenbaum MB, Acunzo RS. Pseudo 2:1 atrioventricular block and T wave alternans in the long QT syndromes. J Am Coll Cardiol 1991; 18 (05) 1363-1366
- 3 Patel C, Narayanaswamy S, Medina-Ravell VA, Yan GX. A rare cause of 2:1 AV block: long QT syndrome. J Cardiovasc Electrophysiol 2008; 19 (09) 990
- 4 Martí-Almor J, Berrueco R, García-Algar O. , et al. QT interval in newborns of different ethnic origin: usefulness of neonatal ECG screening. Rev Esp Cardiol 2008; 61 (09) 980-982