134 Possible Causes for Long QT Syndrome in USA

  • Ventricular Arrhythmia

    Long QT and Brugada syndromes - Two ventricular arrhythmias induced by genetic events present usually in early life (mean onset of symptoms in long QT syndrome is 12 years … intervals and coving of the ST-segment are seen in long QT syndrome and Brugada syndrome, respectively. … If symptoms appear in childhood, genetic testing to confirm mutations characteristic for Brugada or long QT syndromes is necessary.[1]

  • Long QT Syndrome

    "Long QT syndrome". … The long QT syndrome is either inherited or acquired. … Many people with long QT syndrome have no signs or symptoms.[2] [3]

  • Paroxysmal Ventricular Tachycardia

    Genetic testing for Brugada and long QT syndromes and catecholaminergic polymorphic VT is also useful. … Patients with personal or familial history of sudden death should be evaluated for long and short QT syndromes, Brugada syndrome, arrhythmogenic right ventricular dysplasia … When VT occurs in a patient with long QT syndrome, this entity is called "torsade de pointes" and has a particular morphology.[4]

  • Cinchonism

    A significant risk factor for this condition, however, is seen in patients with long QT syndrome, renal disease, myasthenia gravis, optic neuritis and G6PD, suggesting that … To reduce the risk of cinchonism, quinine should never be administered to patients suffering from renal disease, cardiac abnormalities such as long QT syndrome, myasthenia … To reduce the risk of cinchonism, quinine should be avoided in patients suffering from cardiac (most importantly long QT syndrome) or renal disease, myasthenia gravis, optic … [5]

  • Sinus Bradycardia

    Sinus tachycardia Long QT syndrome … Sleep Hypothermia Hypothyroidism Roemheld syndrome Intrinsic disease of the SA node (E.g. sick sinus syndrome). … In patients with post infectious bradycardia, recovery often takes a long time and in some cases may not occur.[6] [7]

  • Ventricular Tachycardia

    Females, who have long QT syndrome, are more prone to develop ventricular tachycardia. … Congenital problems include long QT syndrome and catecholaminergic polymorphic ventricular tachycardia. … Studies have shown that individuals with good left ventricular functioning, but having long QT syndrome, and hypertrophic cardiomyopathy are at an increased risk of sudden … [8] [9]

  • Anorexia

    QT syndrome which can result in sudden cardiac death. … They also frequently cause delayed gastric emptying (gastroparesis) and can sometimes lead to changes in metabolism with long-term use. … Care must be taken under such circumstances to avoid potentially fatal complications of refeeding syndrome.[10]

  • Sulpiride

    All patients should be closely monitored for signs of long QT syndrome and severe arrhythmias. … QT syndrome and severe arrhythmias) Patients with pre-existing epilepsy. … Neuroleptic malignant syndrome — a rare, life-threatening complication that results from the use of antidopaminergic agents.[11]

  • Atenolol

    Atenolol is used for a number of conditions including hypertension, angina, long QT syndrome, acute myocardial infarction, supraventricular tachycardia, ventricular tachycardia … [12]

  • Ventricular Fibrillation

    In certain forms of long QT syndrome, the potassium inward rectifier channel is affected. … Ventricular fibrillation can occur due to coronary heart disease, valvular heart disease, cardiomyopathy, Brugada syndrome, long QT syndrome, or intracranial hemorrhage. … Recently described syndromes such as the Brugada Syndrome may give clues to the underlying mechanism of ventricular arrhythmias.[13] [14]

Further symptoms

Similar symptoms


  1. Ventricular Arrhythmia, Symptoma
  2. Long QT Syndrome, Symptoma
  3. Long QT syndrome, Wikipedia, CC-BY-SA-3.0
  4. Paroxysmal Ventricular Tachycardia, Symptoma
  5. Cinchonism, Symptoma
  6. Sinus Bradycardia, Symptoma
  7. Sinus bradycardia, Wikipedia, CC-BY-SA-3.0
  8. Ventricular Tachycardia, Symptoma
  9. Ventricular tachycardia, Wikipedia, CC-BY-SA-3.0
  10. Anorexia (symptom), Wikipedia, CC-BY-SA-3.0
  11. Sulpiride, Wikipedia, CC-BY-SA-3.0
  12. Atenolol, Wikipedia, CC-BY-SA-3.0
  13. Ventricular Fibrillation, Symptoma
  14. Ventricular fibrillation, Wikipedia, CC-BY-SA-3.0