The purpose of this study was to develop a standardized hand-off program based on the SWITCH tool (surgical procedure, wet, instruments, tissue, counts, have you any questions?) and to examine its effectiveness in terms of self-reported perceptions of hand-off satisfaction, self-efficacy, surgical nursing performance, and communication competence among OR staff members. This randomized controlled trial used a nonsynchronized control group with a pretest and posttest design. The nurses in the experimental group received one educational session and used the standardized hand-off tool for four weeks. The control group performed hand offs using the usual method rather than a tool. After the intervention, self-reported hand-off satisfaction (P = .001), self-efficacy (P = .005), and surgical nursing performance (P < .001) scores were significantly higher in the experimental group than in the control group. A standardized hand-off tool can improve nurse perceptions of satisfaction, self-efficacy, and surgical nursing performance.