The efficacy of nursing intervention to reduce preoperative anxiety in patients with total knee arthroplasty: A protocol of prospective randomized trial.

BACKGROUND: Some patients undergoing the total knee arthroplasty (TKA) have suboptimal postoperative results, and preoperative anxiety may be one of the reasons for these unsatisfactory results. We perform this randomized control study protocol to determine the effectiveness of nursing intervention, on the basis of motivational interview, to decrease the preoperative anxiety in patients receiving TKA. METHODS: This is a double-blinded, single-center, placebo-controlled and randomized trial, which will be conducted from December 2020 to June 2021. The protocol of this study was approved by the West China Hospital of Sichuan University (W20200803-28). Sixty patients who will undergo TKA are included in our study. Patients are randomly divided into experiential group (with 30 patients) and the control group (with 30 patients). The control group and experimental group receive an informative and separate session via nursing about the operation preparation and operation process. Both the control group and the experimental group are given habitual treatment, but the experimental group need to receive additional motivational interviews. The primary outcomes are the Hospital Anxiety and Depression Scale and the Amsterdam Preoperative Anxiety and Information Scale. Secondary outcome is postoperative pain, which is assessed by visual analogue scale . RESULTS: Figure 1 will display the comparison of preoperative and postoperative total average anxiety scores in control group and the experimental group. CONCLUSION: Preoperative psychological distress is familiar in our patients. We hypothesized that nursing intervention may be associated with reduced preoperative anxiety in the patients receiving TKA.