Women who have had a mastectomy for breast cancer deal with two significant issues: the fact that
they have cancer and the loss of their physical attractiveness. Following a mastectomy, an
appropriate breast prosthesis can help to improve body image and quality of life while also reducing
emotional stress. Aim: To evaluate the effect of instructional guidelines on knowledge, practices,
and self-esteem regarding external breast prosthesis (EBP) among post-mastectomy women.
Subjects and method: Design: A quasi-experimental research design was utilized to attain the
study's goal. Setting: the study was conducted in Fayoum Oncology Center's Inpatient and
Outpatient clinics Fayoum Governate/ Egypt. Subjects: A total of 100 post-mastectomy women
were selected from previous settings based on convenient sampling. Four tools were used: Tool (I)
women' structured interviewing questionnaire, it included two parts: (a) demographic characteristics
of post-mastectomy women; (b) post-mastectomy women ' medical data, Tool (II) post-mastectomy
women ' knowledge regarding external breast prosthesis, Tool (III) post-mastectomy women '
practice regarding external breast prosthesis (pre/post), and Tool (IV) self-esteem scale (pre/post).
Results: The study's findings demonstrated that there was a statistically significant improvement in
post-intervention knowledge, practice, and self-esteem than pre-intervention among post
mastectomy women. Conclusion: The results of the study concluded that the instructional
guidelines were effective in improving knowledge, practice, and self-esteem regarding external
breast prosthesis among post-mastectomy women. Recommendations: It recommended raising
awareness of the post-mastectomy women about external breast prosthesis during follow-up by
incorporating this information in their care and follow-up < /span>