Long Qt Syndrome 13 C3150733
Long QT Syndrome type 13 is a rare genetic condition that disrupts the heart's electrical activity, leading to prolonged recovery between beats. Treatment focuses on arrhythmia prevention through medications and avoiding triggers that may cause irregular heartbeats.
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
emotional stress-induced syncope
palpitations triggered by auditory stimuli
seizure-like episodes during startle
sudden cardiac arrest triggered by auditory stimuli
Chest discomfort or palpitations
(cardiovascular)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
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 form the foundation of Long QT Syndrome 13 management, providing protection against catecholamine-triggered arrhythmias and reducing sudden death risk.
Disease management and monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
Implantable cardioverter-defibrillator (ICD)
ICD therapy is reserved for Long QT Syndrome 13 patients at highest risk, including survivors of cardiac arrest or those with breakthrough events on beta-blockers.
Additional treatment options
Sleep hygiene optimization
Structured sleep improvement program addressing circadian rhythm regulation, as sleep-related cardiac events may be more common in Long QT Syndrome 13.
lifestyleFlecainide acetate
Sodium channel blocker that may be considered adjunctively in some Long QT Syndrome 13 patients to reduce arrhythmia burden, though evidence is more limited than for other subtypes.
medicationExercise stress testing
Baseline and follow-up exercise stress testing to evaluate QT behavior during exertion and identify exercise-induced arrhythmia risk in Long QT Syndrome 13 patients.
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 13 C3150733?
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 13 C3150733. 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