Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Pericardial Disorders ?
    ### Response:
    The pericardium is a membrane, or sac, that surrounds your heart. It holds the heart in place and helps it work properly. Problems with the pericardium include       - Pericarditis - an inflammation of the sac. It can be from a virus or other infection, a heart attack, heart surgery, other medical conditions, injuries, and certain medicines.
    