Long QT Syndrome

A condition that is characterized by episodes of fainting (SYNCOPE) and varying degree of ventricular arrhythmia as indicated by the prolonged QT interval. The inherited forms are caused by mutation of genes encoding cardiac ion channel proteins. The two major forms are ROMANO-WARD SYNDROME and JERVELL-LANGE NIELSEN SYNDROME.

Also Known As:

Electrocardiogram QT Prolonged

Cardiovascular Diseases: 91362
- Heart Diseases: 26014
  - Cardiac Arrhythmias: 20790
    - Long QT Syndrome: 1833
  - Cardiac Conduction System Disease: 93
    - Long QT Syndrome: 1833
Congenital, Hereditary, and Neonatal Diseases and Abnormalities: 933
- Congenital Abnormalities: 25723
  - Cardiovascular Abnormalities: 452
    - Congenital Heart Defects: 8917
      - Long QT Syndrome: 1833
Signs and Symptoms Pathological Conditions
- Pathologic Processes: 10023
  - Cardiac Arrhythmias: 20790
    - Long QT Syndrome: 1833

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Disease

Drug/Important Bio-Agent (IBA)