Orem’s (2001) self-care deficit nursing theory (SCDNT) is widely used and accepted by nurses (Taylor 2002) and is one of the most frequently used nursing theories in practice (Alligood and Marriner-Tomey 2002). It is also used in nursing cardiac patients (Williams and Ramos 1993, Jaarsma et al. 1998, Fawcett 1999, Jaarsma 1999).