Congenital Long QT Syndrome: Illness Script

Who?
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Description

Congenital Long QT Syndrome: Illness Script



Who?

 - Kids or young adults, usually < 30

 - high prevalence - 1/2000 live births 

Symptoms:

 - Syncope 

 - Seizure like episodes (may be misdiagnosed) 

 - Sudden cardiac arrest/death 

 - Symptoms mostly due to polymorphic VT (Torsades) or vFib 

**Get baseline EKG in new syncope/seizures and consider long term monitor** 

Triggers:

 - Loud noises or emotional stress 

 - Exercise 

 - Electrolyte imbalances (especially low magnesium !) 

 - QT prolonging meds 

Why?

 - Various channel mutations w/prolongation of repolarization 

    • Three definite sub-types + others 

    • May be autosomal dominant OR recessive w/ variable penetrance (ie, may or may not have a family history) 

Treatment?

 - Beta-blockers 

 - Treat electrolyte abnormalities 

 - Avoid QTc prolonging meds 

 - Possible AICD (if refractory post-arrest or very long QTc) 

 - Refer to specialist 



#Congenital #LongQT #Syndrome #Diagnosis #Cardiology
Contributed by

Dr. Gerald Diaz
@GeraldMD
Board Certified Internal Medicine Hospitalist, GrepMed Editor in Chief 🇵🇭 🇺🇸 - Sign up for an account to like, bookmark and upload images to contribute to our community platform. Follow us on IG:  https://www.instagram.com/grepmed/ | Twitter: https://twitter.com/grepmeded/
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