Long Qt Syndrome 2 9 Digenic Cn315764
Long QT Syndrome type 2 is a genetic heart condition affecting the heart's electrical system. It can cause dangerous irregular heartbeats triggered by sudden sounds or emotional stress. Treatment includes beta-blockers and avoiding known triggers.
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
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.
Disease management and monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
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
Stress reduction program
Behavioral and psychological interventions including stress management techniques, relaxation training, and counseling to reduce emotional triggers that may precipitate 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.
surgicalExercise stress testing
Controlled exercise testing to assess cardiac response to physical exertion and identify exercise-induced arrhythmias, helping to guide activity recommendations.
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 9 Digenic Cn315764?
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 9 Digenic Cn315764. 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