@misc{cogprints4254, volume = {3}, number = {4}, month = {October}, author = {Berardo Sarubbi and Pasquale Vergara and Michele D?Alto and Francesco Sessa and Raffaele Calabr{\`o}}, editor = {Balbir Singh and Yash Lokhandwala and Johnson Francis and Anup Gupta}, title = {Intra-atrial Re-entrant Tachycardia with Wenckebach Periodicity}, publisher = {Indian Pacing and Electrophysiology Group}, year = {2003}, journal = {Indian Pacing and Electrophysiology Journal}, pages = {270--272}, keywords = {Intra-atrial Re-entrant Tachycardia; Wenckebach Periodicity }, url = {http://cogprints.org/4254/}, abstract = {A 15-year-old girl, previously asymptomatic for palpitations, underwent a successful atrial septal defect (ASD) device closure. Twelve weeks after the procedure, the patient was admitted complaining of dyspnoea on effort and palpitations. The twelve-lead ECG showed a narrow QRS tachycardia with slight heart rate irregularity, with a mean HR of 170bpm. P waves were not clearly identified with a suspicious of negative P-waves in II, III and aVF leads. No clear relationship could be observed between the suspected P waves and QRS complexes } }