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Catecholaminergic polymorphic ventricular tachycardia (CPVT) is an inherited genetic disorder that predisposes those affected to potentially life-threatening abnormal heart rhythms or arrhythmias. The arrhythmias seen in CPVT typically occur during exercise or at times of emotional stress, and classically take the form of bidirectional ...
Ventricular tachycardia can occur due to coronary heart disease, aortic stenosis, cardiomyopathy, electrolyte problems (e.g., low blood levels of magnesium or potassium), inherited channelopathies (e.g., long-QT syndrome), catecholaminergic polymorphic ventricular tachycardia, arrhythmogenic right ventricular dysplasia, alcohol withdrawal ...
It is a polymorphic ventricular tachycardia that exhibits distinct characteristics on the electrocardiogram (ECG). It was described by French physician François Dessertenne in 1966. [ 3 ] Prolongation of the QT interval can increase a person's risk of developing this abnormal heart rhythm, occurring in between 1% and 10% of patients who ...
In addition, factors such as rapid infusion, concurrent use of more than one drug known to prolong QT interval, diuretic treatment, electrolyte derangements (hypokalemia, hypomagnesemia, or hypocalcemia), advanced age, bradyarrhythmias, and female sex have all been shown to be risk factors for developing drug-induced QT prolongation. [2]
This results in a net depolarizing current. The classical feature is Bidirectional ventricular tachycardia. Also seen in catecholaminergic polymorphic ventricular tachycardia (CPVT). Delayed afterdepolarization is also seen in myocardial infarction.
Antiarrhythmic agents, also known as cardiac dysrhythmia medications, are a class of drugs that are used to suppress abnormally fast rhythms (tachycardias), such as atrial fibrillation, supraventricular tachycardia and ventricular tachycardia. Many attempts have been made to classify antiarrhythmic agents.
Administration resulted in successful heart rhythm control in 31–44% of patients within 90 minutes, with sustained polymorphic ventricular tachycardia in 0.9–2.5% of patients. It appears to show better results in atrial flutter as compared to atrial fibrillation. [1]
Flecainide is used in the treatment of many types of supraventricular tachycardias, including AV nodal re-entrant tachycardia (AVNRT) and Wolff-Parkinson-White syndrome (WPW). It also has limited use in the treatment of certain forms of ventricular tachycardia (VT). In particular, flecainide has been useful in the treatment of ventricular ...
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