Sudden arrhythmic death syndrome
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Sudden arrhythmic death syndrome (SADS) is a sudden unexpected death of adolescents and adults caused by, as the name implies, a cardiac arrest. However, the exact cause of the cardiac arrest, and thus the exact cause of death, is unknown. These deaths occur mainly during sleep or at rest.[6] One type of conduction defect known as Brugada syndrome can be responsible.[7][8]
Sudden arrhythmic death syndrome | |
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Other names | Sudden adult death syndrome (SADS), bed death, sudden unexpected/unexplained death syndrome (SUDS), sudden unexpected/unexplained nocturnal death syndrome (SUNDS), Sudden Death Syndrome, Sudden Death, Delayed Death |
A type of a deadly ventricular arrhythmia - Ventricular fibrillation pattern seen on an ECG | |
Specialty | Cardiology |
Causes |
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Risk factors | Family history of heart disease,[1] Asian ancestry,[2] Primary arrhythmia, atherosclerosis,[3] type 1 diabetes[4] |
Frequency | 14.9 per 100,000 people in Japan 110.8 per 100,000 people in United States[5] |
The syndrome is rare in most areas around the world but occurs in populations that are culturally and genetically distinct. It was first noted in 1977 among southeast Asian Hmong refugees in the United States and Canada.[9][10] The syndrome was again noted in Singapore when a retrospective review of records showed that 230 otherwise healthy Thai foreign workers living in Singapore died suddenly of unexplained causes between 1982 and 1990.[11]