Atypical Clinical Presentation of Takotsubo Syndrome in Association with Unusual Clinical onset of Myasthenia Gravis: a Case Report

Introduction: Takotsubo syndrome (TTS) is a cardiomyopathy triggered by emotional or physical stress. This case report presents a unique instance of TTS associated with myasthenia gravis (MG) in which myasthenic crisis developed after TTS diagnosis and not before. Case Description: A 73-year-old man presented with difficulty swallowing, dysphonia, and dyspnea, showing moderate-severe left ventricular dysfunction. Blood tests revealed elevated troponin and BNP levels, while the ECG at the arrival showed an ST-elevation in anterior leads. Coronary angiography showed normal aspect of coronary vessels. Echocardiography confirmed TTS with apical ballooning. After few days, myasthenic symptoms emerged leading to a myasthenic crisis. The patient improved with acetylcholinesterase inhibitors and was discharged with pyridostigmine and prednisone. Follow-up revealed complete resolution of left ventricular dysfunction. Discussion: MG rarely affects the heart, but in this case, it led to TTS. Notably, TTS occurred before the myasthenic crisis, emphasizing the need for cardiac monitoring in patients with new neurological diagnoses and acute respiratory.