Guillain-Barré Syndrome Revealed by Complete Atrioventricular Block: A Rare Indication for Pacemaker Implantation

Guillain-Barré syndrome is an acute autoimmune neuropathy that can present with autonomic dysfunction in up to 70% of cases. Cardiac manifestations, though often secondary, may rarely precede neurological symptoms. We report a rare case of GBS revealed by complete atrioventricular block, requiring pacemaker implantation before the diagnosis was established. Neurological symptoms appeared later, and GBS was confirmed by electrophysiological and cerebrospinal fluid findings. This case highlights the importance of considering GBS in the differential diagnosis of unexplained conduction disorders. Early identification of atypical presentations is essential for timely treatment and appropriate management.