Introduction
Inherited rhythm disorders are sometimes called channelopathies. They affect the way electrical signals travel through the heart and include conditions such as long QT syndrome, Brugada syndrome and CPVT. Some people have symptoms; others are identified because of a family history.
Assessment and family care
Assessment starts with a detailed personal and family history, including unexplained blackouts, seizures, sudden death at a young age and known diagnoses. ECGs, exercise testing, imaging and specialist provocation tests may be used selectively, depending on the condition being considered.
Genetic testing can be helpful when there is a known familial variant or a clear clinical indication, but it is not a universal test. Genetic counselling and a coordinated approach to family screening can help relatives understand who may benefit from assessment and what the results mean.
Key points
- A family history of sudden cardiac death, unexplained blackouts or a known inherited condition should be discussed promptly.
- Assessment may involve ECGs, specialist tests, family screening and genetic counselling where appropriate.
- Treatment and lifestyle advice depend on the precise condition and individual risk.
Patient note
“When a heart condition may run in a family, the aim is clarity: what is known, who may benefit from assessment, and what support is available.”
Questions about inherited rhythm conditions
Is there a known diagnosis or genetic result in the family? Which relatives may need assessment? What tests are appropriate for me?
FAQ
Does a family history always mean I have the condition?
No. The implications vary between conditions and families. Specialist assessment helps clarify whether screening or genetic advice is appropriate.