Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Arrhythmia ?
    ### Response:
    Espaol
                
An arrhythmia (ah-RITH-me-ah) is a problem with the rate or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm.
                
A heartbeat that is too fast is called tachycardia (TAK-ih-KAR-de-ah).
    