Cardiac electrophysiology and arrhythmias

Cardiac electrophysiology investigates how electrical signals are generated and propagated through heart muscle, and how disruptions to that process produce arrhythmias — abnormal heart rhythms that range from benign to instantly fatal. Conditions like Long-QT Syndrome and Brugada Syndrome arise from inherited or acquired defects in the ion channels and calcium-handling proteins, such as ryanodine receptors, that govern each beat at the molecular level. Sudden cardiac death, which claims hundreds of thousands of lives annually, is often the first and only sign that such a defect exists, making early genetic testing and risk stratification an urgent clinical priority. Researchers are actively working to understand how ion-channel remodeling unfolds over time in diseased hearts, and how that knowledge can inform more precise therapies beyond the blunt instruments of current antiarrhythmic drugs.

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Keywords

ArrhythmiasLong-QT SyndromeSudden Cardiac DeathIon ChannelsCardiac ElectrophysiologyGenetic Testing