Abstract: Objective: To construct a decision-making aid tool for intravenous chemotherapy in patients with gynecologic malignant tumor and evaluate its effects, so as to provide reference for developing decision-making aids. Methods: Based on the Ottawa Decision Support Framework, a mixed research method was used to construct a decision-making aid tool for intravenous access to chemotherapy in patients with gynecological malignant tumor. Totally 144 patients with gynecological malignant tumors admitted to a tertiary grade A hospital in Beijing from October 2021 to September 2022 were selected by convenience sampling method for the clinical application of the tool, and they were randomly divided into control group and experimental group. The patients' willingness to participate in treatment decision-making and actual questionnaires, decision-making dilemma scale and other indicators were used for evaluation. Results: The decision-making support tools included a list of questions, a selection table of intravenous chemotherapy access devices, and a decision-making assistance manual. The actual participation, decision-making satisfaction and central venous catheterization rate of the experimental group were better than those of the control group (P<0.05), and the degree of decision-making dilemma was lower than that of the control group after the application of decision-making aid tool (P<0.05). Conclusion: The decision-making aid tool is scientific and practical, which can promote patients' participation in clinical decision-making and reduce decision-making dilemmas.

Key words: decision-making aid; tumor; chemotherapy; venous access; the Ottawa Decision Support Framework