RESUMO
The causes of sudden death after medullary infarction involve arrhythmia, central respiratory failure, and dysautonomia. Sudden cardiac arrest in a medullary infarction is uncommon. Most of these cases experienced sudden cardiopulmonary arrest within 2 weeks from stroke onset as the extent of lesion increased. Here, we report two cases of medullary infarction presenting as sudden cardiac arrest. These cases indicate that medullary infarction could be one of the causes of sudden cardiac arrest.
Assuntos
Arritmias Cardíacas , Morte Súbita , Morte Súbita Cardíaca , Parada Cardíaca , Infarto , Bulbo , Disautonomias Primárias , Insuficiência Respiratória , Acidente Vascular CerebralRESUMO
Mitochondrial encephalomyopathy with lactic acid and stroke-like episodes (MELAS) is a multisystem mitochondrial disorder that typically presents in childhood. We report a case of MELAS syndrome diagnosed in a 45-year-old man presented with chronic kidney disease before a stroke-like episode. Genetic testing revealed a m.3243A>G point mutation in the mtDNA. The original diagnostic criteria for MELAS required the onset of stroke-like episodes prior to 40 years of age but this case demonstrates that disease onset may delay in certain individuals.
Assuntos
Humanos , Pessoa de Meia-Idade , DNA Mitocondrial , Testes Genéticos , Ácido Láctico , Transtornos de Início Tardio , Síndrome MELAS , Doenças Mitocondriais , Encefalomiopatias Mitocondriais , Mutação Puntual , Insuficiência Renal Crônica , Acidente Vascular CerebralRESUMO
Swallow or deglutition syncope is a rare cause of syncope. It occurs due to a vagal reflex while swallowing. We present here a patient with recurrent loss of consciousness after swallowing liquid. He had a 1-month history of concurrent chemoradiotherapy due to non-small cell lung cancer. Electrocardiogram monitoring revealed atrioventricular block with swallowing of beverages. The details of this case suggest that chemoradiotherapy to mediastinum may cause neurogenic swallow syncope.