Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Familial progressive cardiac conduction defect ?
    ### Response:
    Familial progressive cardiac conduction defect (PCCD) is a is a cardiac (heart) conduction disorder that may progress to complete heart block. Affected people may not have any symptoms, or the condition may cause shortness of breath, dizziness, fainting, abdominal pain, heart failure, or sudden death.
    