Application of Neuman Systems Model in Nurse Anesthetists to Reduce Patient's Anxiety Level: A Randomized Clinical Trial

Background and Anxiety is a normal reaction to stress influencing behavioral, physical and mental aspects of human life. This study aimed to apply Neuman Systems Model in reducing the patient's anxiety level before surgery. In a randomized controlled trail, 104 patients undergoing orthopedic surgery in Imam Ali Hospital, Bojnourd were studied. Data was collected using a demographic questionnaire and the Spielberger State-Trait Anxiety Inventory (STAI). Intervention was performed according to Neuman Systems Model that includes assessing the actual and potential stressors, identifying the objectives and strategies for action, and strengthening the defense and the natural flexibility. Assessment of anxiety was done in two groups (the experimental group according to Neuman Systems Model and the control group without any intervention) before and after the intervention. Data was analyzed by Chi-square test, t-test, and paired t-test using SPSS V. 16. The results showed no significant difference in the level of anxiety before the intervention between the two groups. But after the intervention the anxiety level reduced significantly in experimental group (-18.94±16.1, P<0.001). A significant increase in anxiety was seen in control group (+12.73±9.98, P<0.001). The Neuman Systems Model was found to be efficient in reducing the level of anxiety before orthopedic surgical procedures. This study supports the role of Neuman Systems Model in reducing anxiety before orthopedic surgery, so, this model could be applied in both educational and clinical settings.