Abstract: Objective: To explore the effects of the preoperative management of antithrombotic drugs based on feedforward control model and to provide a reference for the scientific management of antithrombotic drugs in elderly patients undergoing ambulatory surgery. Methods: By means of convenience sampling, 393 elderly patients who received antithrombotic therapy and had their first ambulatory surgery were enrolled. The patients were divided into the control group and the experimental group according to the time of admission. Later the control group was offered conventional management of antithrombotic drugs, while the experimental group received management on the basis of feedforward control model after cause analysis. Results: After the intervention, the cancellation rate of operation caused by antithrombotic drugs in the experimental group was significantly lower than that in the control group (χ2=6.886, P=0.009). Statistically significant differences were observed in the drug treatment adherence between the two groups (χ2=6.658, P=0.037). Moreover, nurses' awareness of the types and names of antithrombotic drugs, the time to discontinue drugs, the names and usage of alternative drugs before and after the training were also statistically different (P<0.05). Conclusion: Preoperative management of antithrombotic drugs based on feedforward control model can reduce the cancellation rate of ambulatory surgery, enhance the medication compliance in elderly patients, optimize nurses' management of antithrombotic drugs to comprehensively improve patients' medical experience.

Key words: feedforward control; elderly patient; ambulatory surgery; antithrombotic drug