Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Congenitally corrected transposition of the great arteries ?
    ### Response:
    Congenitally corrected transposition of the great arteries is a rare heart defect that occurs when the ventricles and attached valves are switched. As a result, the aorta and the pulmonary artery are connected to the wrong lower heart chambers. Click here to visit MayoClinic.
    