关键词: 下肢静脉曲张, 射频消融术, 出院准备度, 量表, 信效度检验

Abstract: Objective: To develop an instrument for measuring the discharge preparation for patients with varicose veins of lower extremity after radiofrequency ablation surgery and test its reliability and validity. Methods: Under the guidance of transition theory, the dimensions and entry pool of the scale were initially set through comprehensive literature search, screening, reading and group discussion. Items were modified through expert letter inquiry methods, pre-surveys, project analysis and exploration sub-analyses, and then formal scales were formed. Using the convenient sampling method, 176 patients who underwent varicose veins of lower extremity radiofrequency ablation surgery in the vascular ward of general surgery in a Class A tertiary hospital in Tianjin from July 2022 to April 2023 were included and the reliability and validity test were conducted to construct the discharge readiness scale for patients with varicose veins after surgery. Results: The discharge preparation scale for patients with varicose veins of lower extremity after radiofrequency ablation surgery included 22 items in 4 dimensions. They were disease knowledge, personal status, coping ability and social support. The cumulative variance contribution rate was 75.853%. The recovery rate of the two rounds of expert letters was 100%, the expert authority coefficients were 0.83 and 0.86, and Kendall coordination coefficients were 0.433 and 0.351 (P<0.05). The total Cronbach′s α coefficient of the questionnaire was 0.954 and the Cronbach′s α coefficients of each dimension were 0.850, 0.958, 0.602 and 0.709. The content validity index (S-CVI) of the scale level was 0.962, and the content validity index (I-CVI) of the items level were 0.813 to 1.000. Conclusion: The discharge preparation scale for patients with varicose veins of lower extremity after radiofrequency ablation surgery constructed in this study is scientific and practical, and can be used to evaluate the discharge preparation of patients with varicose veins of lower extremity after radiofrequency ablation surgery.

Key words: Varicose veins of lower extremity, Radiofrequency ablation surgery, Preparation for hospital discharge, Scale; Reliability and validity test