Below is an instruction from Human. Write a response.
    ### Instruction:
    How to prevent Sudden Cardiac Arrest ?
    ### Response:
    Ways to prevent death due to sudden cardiac arrest (SCA) differ depending on whether:
                
You've already had SCA
                
You've never had SCA but are at high risk for the condition
                
You've never had SCA and have no known risk factors for the condition

    