en Midwifery Orginal research <div style="text-align: justify;"><span style="line-height:2;"><span style="font-family:Times New Roman;"><span style="font-size:14px;"><span style="unicode-bidi:embed"><span sans-serif=""><span style="color:#2980b9;"><b><i><span new="" roman="" times="">Background:</span></i></b></span> <span new="" roman="" times="">Pain management in patients with breast cancer is possible when it is considered in connection with emotional regulation. In patients with emotional problems and anxiety, emotion regulation can be good predictors for controlling their negative emotions</span><span new="" roman="" times="">.</span></span></span><br> <span style="unicode-bidi:embed"><span sans-serif=""><b><i><span new="" roman="" times=""><span style="color:#2980b9;">Objectives:</span> </span></i></b><span new="" roman="" times="">This study aimed to explain the pain management model based on rumination and positive and negative emotional regulation mediating vitality in women with breast cancer.</span></span></span><br> <span new="" roman="" times=""><span style="color:#2980b9;"><b><i>Methods:</i></b></span><span style="color:black"> The research method was descriptive correlation modeling (structural equations). Participants in this study were women with breast cancer referred to all medical centers (hospitals and private and public clinics) in Tehran, of whom 273 were randomly selected. To measure the research variables, rumination response questionnaires, positive and negative emotional regulation, and vitality and pain management scales were used. SPSS 22 and LISREL 8.80 software were used to perform Spearman&rsquo;s correlation coefficient test and path analysis for data analysis.</span></span><br> <span style="unicode-bidi:embed"><span sans-serif=""><span style="color:#2980b9;"><b><i><span new="" roman="" times="">Results</span></i></b><b><span new="" roman="" times="">:</span></b></span><span new="" roman="" times=""><span style="color:#2980b9;"> </span>The results showed that the indirect effect of positive emotional regulation was significant on vitality-mediated catastrophe (&beta;=-0.07, P&le;0.05). Also, the indirect effect of negative emotional regulation was significant on vitality-mediated catastrophe (&beta;=0.11, P&le;0.05).</span></span></span><br> <span style="unicode-bidi:embed"><span sans-serif=""><span style="color:#2980b9;"><b><i><span new="" roman="" times="">Conclusion:</span></i></b></span><span new="" roman="" times=""> It can be concluded that the pain management model based on rumination and positive and negative emotional regulation with vitality mediation in women with breast cancer has sufficient fitness.</span></span></span><br> <span style="unicode-bidi:embed"><span sans-serif=""><b><i><span style="font-family:"Times New Roman","serif""></span></i></b></span></span></span></span></span></div> Pain Management, Rumination, Positive and Negative Emotional Regulation, Vitality, Breast Cancer, Structural Equation Modeling 62 70 http://nmcjournal.zums.ac.ir/browse.php?a_code=A-10-846-1&slc_lang=en&sid=1 Fatemeh Givi givi_fatemeh@yahoo.com 100319475328460014266 100319475328460014266 No Department of Psychology, Karaj Branch, Islamic Azad University, Karaj, Iran Farahnaz Meschi farahnazmeschi@yahoo.com 100319475328460014267 100319475328460014267 Yes Department of Clinical Psychology, Karaj Branch, Islamic Azad University, Karaj, Iran Masoumeh Zhian Bagheri mbagheri.phd88@yahoo.com 100319475328460014268 100319475328460014268 No Department of Clinical Psychology, Karaj Branch, Islamic Azad University, Karaj, Iran Dariush Farhood farhud@sina.tums.ac.ir 100319475328460014269 100319475328460014269 No Department of Human Genetics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran