Long QT Syndrome is a heart condition characterized by an extended QT interval on an electrocardiogram (ECG), which signifies delayed repolarization of the heart after a heartbeat. This condition can lead to serious arrhythmias, such as Torsades de Pointes, and can result from genetic mutations affecting ion channels, particularly those involved in cardiac repolarization. Understanding this syndrome is crucial for grasping how ion channel function and modulation can directly influence heart rhythm and overall cardiovascular health.
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