A cardiothoracic construct fabricated from human birth tissue comprising at least one cross-linked amniotic membrane, or at least one cross-linked chorionic membrane, or at least one amniotic membrane, or at least one chorionic membrane, or any combination thereof wherein the membrane(s) is/are treated with at least one alcohol composition followed by terminal sterilization is provided. Methods of processing a membrane to form a cardiothoracic construct and methods of preventing adhesion after a cardiac surgical procedure are also provided.
