Long Qt Syndrome 11 C2678483
A genetic condition affecting the heart's electrical activity, causing irregular heartbeats. It raises the risk of fainting and life-threatening arrhythmias. Treatment involves medications and monitoring.
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
Ventricular arrhythmia
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
Beta-blockers serve as first-line therapy for Long QT Syndrome 11, effectively reducing heart rate and blunting the adrenergic surge that can trigger dangerous arrhythmias.
Disease management and monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
Implantable cardioverter-defibrillator (ICD)
ICD placement is indicated for Long QT Syndrome 11 patients with prior cardiac arrest or recurrent syncope to provide automatic termination of ventricular fibrillation.
Additional treatment options
Competitive sports restriction
Elimination of high-intensity competitive athletics and swimming alone in patients with Long QT Syndrome 11 reduces sudden cardiac death risk significantly.
lifestylePotassium supplementation
In selected Long QT Syndrome 11 patients, oral potassium replacement may help normalize serum levels and shorten the QT interval, particularly in hypokalemic states.
medicationGenetic testing and family screening
Comprehensive cascade screening of family members with genetic testing and serial ECGs to identify affected relatives and implement early preventive measures.
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 11 C2678483?
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 11 C2678483. 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