Infra-hissian Wenckebach phenomenon. A case report, with some reflection about slow conduction

Marcello Costantini 1,3, Lorenzo Costantini 2, Michele Maffia 3

1 Scuola di Specialità in Cardiologia. Università degli Studi di Foggia, Italy; 2 Struttura Complessa Cardiologia-Ospedale Santa Caterina Novella. ASL Lecce, Galatina-Lecce, Italy; 3 Laboratorio di ricerca DREAM-Università del Salento/ASL Lecce, Italy

We describe a case of Wenckebach periodicity in the distal conduction system. Our observation strengthens the concept that Wenckebach type block in surface ECG may reflect block in infra-hissian tissues, especially if there is a wide QRS complex in the conducted beats.

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