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Although many of those with Brugada syndrome do not have any symptoms, Brugada syndrome may cause fainting or sudden cardiac death due to serious abnormal heart rhythms, such as ventricular fibrillation or polymorphic ventricular tachycardia. [9] Blackouts may be caused by brief abnormal heart rhythms that revert to a normal rhythm spontaneously.
The resting 12-lead ECG is a useful test to differentiate CPVT from other electrical diseases of the heart that can cause similar abnormal heart rhythms. Unlike conditions such as long QT syndrome and Brugada syndrome, the resting 12-lead ECG in those with CPVT is generally normal. [8]
Because the heartbeat is dependent on the proper movement of ions across the surface membrane, cardiac channelopathies make up a key group of heart diseases. [3] Long QT syndrome , the most common form of cardiac channelopathy, is characterized by prolonged ventricular repolarization, predisposing to a high risk of ventricular tachyarrhythmias ...
Andersen–Tawil syndrome: This condition affects the QT interval (in blue) Antley–Bixler syndrome: Barth syndrome: Brugada syndrome: Cantú syndrome: genetic (Chromosome 12, autosomal dominant) Cardiac syndrome X: Cardiorenal syndrome: Kidney Cat eye syndrome: CHARGE syndrome: Coffin–Lowry syndrome: genetic (RPS6KA3 gene mutation ...
Ventricular tachycardia (V-tach or VT) is a cardiovascular disorder in which fast heart rate occurs in the ventricles of the heart. [3] Although a few seconds of VT may not result in permanent problems, longer periods are dangerous; and multiple episodes over a short period of time are referred to as an electrical storm.
Many individuals have symptoms associated with ventricular tachycardia, such as palpitations, light-headedness, or syncope. Others may have symptoms and signs related to right ventricular failure, such as lower extremity edema, or liver congestion with elevated hepatic enzymes. ACM is a progressive disease.
Broken heart syndrome is caused by extreme emotional or physical stress. [3] Treatment depends on the type of cardiomyopathy and the severity of symptoms. [5] Treatments may include lifestyle changes, medications, or surgery. [5] Surgery may include a ventricular assist device or heart transplant. [5]
Torsades de pointes is associated with long QT syndrome, a condition whereby prolonged QT intervals are visible on an ECG. Long QT intervals predispose the patient to an R-on-T phenomenon , wherein the R-wave, representing ventricular depolarization, occurs during the relative refractory period at the end of repolarization (represented by the ...