Background: Cardiovascular diseases are the most common non-communicable diseases and the leading cause of death worldwide. Therefore, investigating and selecting the most effective psychological interventions for managing stress and improving the quality of life of these patients is essential. This study aimed to compare the effectiveness of two methods, transdiagnostic therapy and stress inoculation training, in reducing perceived stress, improving cognitive emotion regulation, and enhancing the quality of life of cardiac patients.
Methods: The present study was a quasi-experimental research with a pretest-posttest design and follow-up, including a control group. The statistical population consisted of cardiovascular patients referred to Shahid Madani Hospital in Khorramabad, Lorestan. Using a convenience sampling method, 90 patients were selected and randomly assigned to one of three groups: control, experimental group 1 (stress inoculation training), and experimental group 2 (unified transdiagnostic therapy). The interventions were conducted based on Meichenbaum's stress inoculation training protocol and Barlow's unified transdiagnostic therapy protocol. Data were collected using the Garnefski Cognitive Emotion Regulation Questionnaire, Cohen's Perceived Stress Scale, and the WHO Quality of Life Questionnaire. Data were analyzed using repeated measures ANOVA.
Results: The results indicated that in the group receiving stress inoculation training, the mean score of perceived stress decreased in the posttest and follow-up stages (p<0.05). In the unified transdiagnostic therapy group, the total score of cognitive emotion regulation increased in the posttest and follow-up stages (p<0.001). Regarding quality of life, the transdiagnostic intervention demonstrated greater effectiveness compared to the stress inoculation training group (p<0.01).
Conclusion: According to the findings, healthcare professionals can purposefully utilize these interventions in the treatment process of cardiac patients, depending on each patient's specific needs (immediate stress reduction or sustained improvement in emotions and quality of life).