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Overview of SADS Conditions
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Long QT Syndrome
What is Long QT Syndrome (LQTS)?
LQTS is a disturbance of the heart’s electrical system. It is caused by abnormalities of microscopic pores (proteins) in the heart cells called ion channels.
Nearly half of patients with LQTS NEVER have a symptom!
What are the symptoms of LQTS?
Cardiac arrest or fainting due to trademark cardiac arrhythmia called torsade de pointes
Family history – of a SADS diagnosis, SADS symptoms, or sudden unexplained death of a family member under 50 years of age
What tests may be used to make an LQTS diagnosis?
Echocardiogram --to rule out a cardiomyopathy
More than 1 resting ECG
A treadmill stress test with an ECG
An epinephrine, procainamide (Brugada), or catecholiminergic (CPVT) drug study - where the effects of drugs on the heart are analyzed
A Holter or event monitor
Genetic Testing
What are the treatment options for LQTS?
Medication, beta blockers
ICD
AED
Left Cardiac Sympathectomy Denervation (LCSD)
Avoid drugs that can prolong the QT Interval
Long QT Syndrome Resources
Long QT Syndrome Brochure
Long QT Syndrome in Spanish
(El Sindrome de QT Largo)
Long QT Syndrome in Arabic (متلازمة الفترة )
Timothy Syndrome
(a rare type of LQTS with autism and webbed toes/fingers)
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Overview of SADS Conditions
Brugada Syndrome
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Long QT Syndrome
Short QT Syndrome
Timothy Syndrome
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Warning Signs
Family history of unexpected, unexplained sudden death under age 40.
Fainting or seizure during exercise, excitement or startle.
Consistent or unusual chest pain &/or shortness of breath during exercise.