Background: since breast is an important part of women’s body image, mastectomy surgery can have negative effects on physical, social and psychological health and may lead to decreased self-efficacy.
Aim: The aim of this study is to examine the effect of MSNP on self-efficacy after mastectomy surgery in patients with breast cancer.
Method: This randomized clinical trial was conducted on 102 patients with breast cancer who had undergone radical mastectomy and were referred to Omid Hospital in Mashhad. Participants were randomly assigned to the intervention and control groups. The intervention group received MSNP consisting of six sessions. Meanwhile, the control group received the hospital’s routine educational care simultaneously. To evaluate the intervention, the CDSES and SUPPH were administered to both groups at three time points: before the intervention, immediately after completion of the intervention, and two weeks after intervention. Data were analyzed using SPSSv23 software.
Results: The results indicated that there was no statistically significant difference between the intervention and control groups in terms of mean self-efficacy scores at the pre-test stage (p > 0.05). However, at the post-test and follow-up assessments, the mean scores on CDSES and SUPPH Questionnaire were significantly higher in the intervention group than in the control group (p < 0.001).
Implications for Practice: This study demonstrated that MSNP was effective in improving self-efficacy after mastectomy among patients and enhancing their adherence to treatment.