Long Qt Syndrome 2 3 Digenic C3276240
This digenic form of Long QT Syndrome involves mutations in two genes that together cause an unusually high risk of severe arrhythmias. Patients often require aggressive treatment including beta-blockers, ICD placement, and close cardiac follow-up.
Key facts at a glance
- ICD-10
- I45.81
- ICD-11
- BA00.0
- Body system
- cardiovascular
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Syncope
Torsades de pointes
Palpitations
Chest discomfort or palpitations
(cardiovascular)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Dizziness
(cardiovascular)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Disease management and monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
Beta-blocker therapy
First-line pharmacologic treatment using non-selective beta-blockers to reduce sympathetic stimulation and prevent cardiac arrhythmias. Regular cardiac monitoring is essential to assess treatment efficacy.
ICD implantation
Implantable cardioverter-defibrillator placement for high-risk patients with history of syncope or cardiac arrest. The device continuously monitors heart rhythm and delivers shocks when dangerous arrhythmias are detected.
Additional treatment options
Arrhythmia trigger avoidance
Structured lifestyle modification program to identify and avoid known triggers such as sudden auditory stimuli, emotional stress, and competitive athletics that may precipitate dangerous arrhythmias.
lifestyleLeft cardiac sympathetic denervation
Minimally invasive surgical procedure to interrupt sympathetic nerve pathways to the heart, reducing the risk of life-threatening arrhythmias when medical therapy alone is insufficient.
surgicalContinuous cardiac rhythm monitoring
Long-term ambulatory monitoring through Holter devices or implantable loop recorders to detect silent arrhythmias and assess treatment response over extended periods.
monitoringWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Long Qt Syndrome 2 3 Digenic C3276240?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
Compare medications used to treat Long Qt Syndrome 2 3 Digenic C3276240. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy