Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Long QT syndrome ?
    ### Response:
    What are the signs and symptoms of Long QT syndrome? Signs and symptoms of the arrhythmias experienced by people with long QT syndrome includes unexplained fainting, seizures, drowning or near drowning, and sudden cardiac arrest or death. You can read more about these and other symptoms of long QT syndrome on the National Heart Lung and Blood Institute's Web site by clicking here.
    