Wheelchair Transfer Simulations to Enhance Procedural Skills and Clinical Reasoning

Development

The impetus for scenario development came from both students and fieldwork educators. Although existing course content contained hands-on peer practice of patient transfers in a classroom laboratory, students requested more intensive practice in completing dependent patient transfers. Likewise, our fieldwork educators expressed a need for curriculum content that addressed practice, hands-on management of acutely ill and medically complex patients, and use of associated medical equipment. This request was common to fieldwork educators working in hospitals, transitional care, skilled nursing, and inpatient rehabilitation settings and was communicated on the American Occupational Therapy Association Fieldwork Performance Evaluation form. Cognitive Learning Theory was selected as the theoretical model because of the emphasis on both participation and observation. Faculty selected simulators (SimMan^®; Laerdal Medical Corporation, Wappingers Falls, NY) as the method for teaching students dependent transfer skills. In contrast to human simulated patients, simulators allowed us to attach lines, tubes, and drains and manipulate physiological functions, and students could do no harm to them.

To capture real-life clinical events, 10 occupational therapists employed in regional acute care settings were asked to nominate medical conditions and critical events they faced when transferring medically complex patients. Because each therapist was employed in a setting with various specialty units, a variety of critical events were proposed (Table 1). Patients’ medical status frequently requires managing a line, drain, or tube; managing respiratory equipment; managing a decline in medical stability; or maintaining patient safety. To promote spontaneous problem solving and enhance students’ clinical reasoning skills for responding to critical events that occur while transferring a patient, the critical events for each scenario were different, and each critical event was based on real medical challenges in acute care settings that required a skilled response.

Every scenario included a dependent bed-to-wheelchair transfer of a simulator (patient). This type of transfer was chosen because it mimics getting a patient ready to participate in activities of daily living or transport to the rehabilitation gym. Although the transfer classification was fully dependent, the simulator weight (29.5–34 kg, or 65–75 lb) was judged by the instructors to simulate a one-person maximum assistance transfer, which is often used by rehabilitation professionals.

Each scenario had an accompanying patient medical history (vignette) that was presented in a standardized format to the students before the encounter with the patient. For example, for the postoperative scenario the vignette read, “Mr. Smith had an accident at a construction site and has suffered internal trauma. He now has a Jackson-Pratt abdominal drain. You are going to transfer him out of bed and into a wheelchair so that he can change into clean hospital clothing before his family visits.”

Five faculty members and three doctoral candidates associated with the department reviewed the scenarios to determine their overall ecological (real-life) and content validity. All reviewers had experience in direct patient care and exposure to intervention in the acute care environment but were not involved in scenario development. Content validity was rated on the degree to which each scenario assessed (1) patient and therapist safety, (2) equipment and technology management, and (3) medical complexity. All ratings used a scale ranging from 1 (lowest) to 10 (highest). Ratings for the eight scenarios (Table 2) were averaged to yield an overall scenario rating mean. Score equivalency in the overall rating of the scenarios was sought because of the scenarios’ use in course grading. The orthopedic trauma scenario was eliminated because of its low overall rating. Therefore, the simulation scenarios selected for application in the curriculum were perceived to be of comparable complexity, with experts’ overall mean ratings ranging from 7.60 to 8.63 (see Table 2, left side).

Transfer Training

In our curriculum, wheelchair transfer procedures were taught using a video–practice–assessment sequence, in which students first watched instructional videos of proper transfer techniques, then practiced transfers with peer partners in a classroom laboratory, followed by a performance assessment consisting of a peer transfer in the classroom laboratory. The practice simulation experience at the Peter M. Winter Institute for Simulation, Education, and Research (WISER) Center, a high-technology mock acute care environment, was added 1 wk after the classroom assessment. The WISER Center consists of multiple identical single-patient rooms that mimic an acute care setting in which medically complex patients would receive care. Rooms included monitors reflecting programmed vital signs and full-size simulators (e.g., SimMan), with lines, drains, and tubes indicative of the medical condition of the patient described in the relevant patient scenario.

Students in our entry-level and advanced professional master’s programs (N = 108) participated in the transfer training module. Approximately 1 wk before engaging in the practice simulation, students were grouped in threes. Each group was given scenario vignettes (three of the seven available) that provided basic information about the patients they might encounter at the WISER Center. Each vignette outlined the patient’s medical condition, the reason for the bed-to-wheelchair transfer, and the occupational activity that was to occur once the patient was seated. Instructors also used the WISER Center’s digital recording system to record clips that showed students the patient rooms and SimMan and demonstrated equipment use and medical procedures they might encounter. Students did not know the specific critical events they would encounter in the practice simulation until the event actually occurred in the context of their transfers. Because students practiced in groups, each student had the opportunity to learn by being a participant (doing a transfer) and by being an observer (observing a peer).

After students completed their practice simulation at the WISER Center, a pause-to-reflect method of debriefing was used (Pollock, 2012). Verbal feedback was provided by one of the instructors to each student and each small group immediately after the session. Written individual feedback was subsequently given to each student using the applicable scenario checklists (see Table 1, Assessment Criteria column). Students also had the opportunity to review the digital recording that was made of their group’s simulation experience. The most common errors and their remediation were discussed as part of classroom instruction.

Performance Assessment

Approximately 2 wk after the practice simulation session, student groups returned to the center for performance assessment. The procedures used to prepare for, and engage in, the practice simulation session were repeated for performance assessment except that the scenarios and accompanying vignettes were different.

To facilitate performance assessment, criterion-referenced checklists for each scenario, with criteria and evidence, were used (see Table 1). The criteria common to all scenarios addressed basic infection control, equipment management (wheelchair and electric bed), patient management (noting and recording vital signs before and after transfer), and the transfer process (body mechanics and safety, preparing patient for the move). Because each scenario had a different medical challenge, and hence critical patient management event, the critical event criteria were unique for each scenario. Thus, each scenario had a slightly different checklist (see Table 1 and Figure 1). Each checklist item was operationally defined with observable actions. For grading performance, each criterion was regarded as equally important, and all criteria were summed to yield an overall score. Because each checklist item was graded as met or not met, the checklists provided a portrait of each student’s strengths and weaknesses in managing the transfer in the context of occupation and a medical event consistent with patients in acute care settings.

OPEN IN VIEWER

Figure 1.

Scenario critical event objectives and operational criteria.

The four graders for the performance assessment were occupational therapists trained to interpret checklist criteria by Joanne M. Baird and Ketki D. Raina. Digital recordings were made of all sessions, and graders watched them together but scored the checklists separately; inconsistencies were discussed until consensus was achieved. Interrater reliability of ≥90% was achieved and monitored through random audits by Raina. Checklist raw scores were converted to percentages of criteria met, and mean scores, standard deviations, and minimum and maximum scores were used to compare student performance in each scenario. Student checklist scores were averaged to determine the level of difficulty of each scenario, based on student performance. The cardiac scenario was the most challenging for students (mean [M]= 66%), and the intravenous (IV) scenario presented the least difficulty (M = 88%; see Table 2).

Students’ Perceptions of Effectiveness of Simulation Training

Students rated the effectiveness of simulation training and the scenarios on a scale ranging from 1 to 10 (1 = very uncertain that the experience was effective; 10 = very certain that the experience was effective). Students were surveyed before beginning simulation training, after the simulation practice sessions, and after the simulation performance assessment. A comparison of mean scores and minimum and maximum scores determined whether the scenarios were perceived as effective for clinical preparation to transfer medically complex patients in an acute care setting. These ratings were used to determine students’ perceptions of scenario effectiveness over time. Data indicated that student perceptions of the effectiveness of the simulation scenarios were highest immediately before (M = 8.81, standard deviation [SD] = 1.38) and after (M = 8.01, SD = 2.07) the initial simulation exposure and decreased after the second simulation exposure (M = 7.98, SD = 2.15).

Discussion

Typically, occupational therapy curricula expose students to a classroom-based peer transfer before clinical practice with actual patients. In response to feedback from fieldwork students and practitioners that more content was needed on transferring medically complex and fragile patients, we built on the classroom training in dependent transfers by designing an educational intervention that consisted of students executing a dependent transfer of a patient (SimMan) in a simulated acute care setting, the WISER Center, with actual medical equipment, vital signs screens, lines, and drains in place. The transfer was embedded in a clinical scenario that described the patient’s medical condition and the occupational activity that the student would initiate after the transfer. During the transfer, students anticipated that a critical event common to patients who are acutely ill would occur, but the nature of that event was unknown. Thus, students were exposed not only to a more realistic dependent transfer but also to critical events that required timely clinical reasoning. More important, students experienced the consequences of their actions. For example, students who forgot to lower the bed and poorly executed a transfer were faced with a patient fall; students who attended to changes in vital signs indicative of postural hypotension and thus slowed postural changes of the simulator were relieved to observe a resumption of medical stability in the patient.

With input from regional therapists, eight clinical scenarios were developed to support the intervention. One, the orthopedic trauma scenario, was subsequently eliminated because of low ratings of ecological and content validity. The expert practitioners judged the seven remaining scenarios to be of comparable difficulty. Therefore, we expected that student performance on the various scenarios would be equivalent. However, this was not the case. Students’ performance was stronger in scenarios requiring them to manipulate equipment (management of an IV) and weaker in scenarios requiring timely clinical reasoning based on changing patient conditions (management of bradycardia). This finding indicated that our curriculum needed to place greater emphasis on signs and symptoms of medical instability as well as the clinical reasoning necessary for the correct and timely responses needed. Although students were allowed 10 min to complete each scenario, this finding also suggests that scenarios that focus on critical events involving medical instability should include documentation of the time needed for the student to implement the correct response. In contrast, equipment manipulation usually allows for a more flexible timeline, which may have allowed the students to demonstrate their clinical reasoning in a less stressful context.

Students’ ratings indicated that the scenarios and simulation experience were effective in preparing them to transfer medically complex patients in an acute care environment. Informal student feedback about experiences at the WISER Center supported these ratings. When students were asked about their WISER experiences in relation to classroom-based learning, one student commented,

Another student commented,

Additional feedback about the benefits of the simulation focused on increased skill in management of common equipment (IV poles, various lines and drains) and a quicker recognition of instability using vital signs (pulse, respiration, oxygen saturation, blood pressure).

When designing educational interventions, complex simulations are not often considered for the training of transfer skills (Resnick & Sanchez, 2009). However, the use of simulation scenarios with embedded critical events was effective for teaching and assessing dependent transfer skills and clinical reasoning in occupational therapy students. This training occurred in a realistic context and without risking injury to medically complex patients. Many occupational therapy curricula have access to a SimMan or similar simulator, and the critical event scenarios can be used without a mock hospital suite. Students reported that their learning experience was broader than just transfer training. Thus, the educational intervention was successful for teaching students about the importance of monitoring vital signs, managing equipment, and adjusting to the acute care environment, all while implementing the mechanics of a dependent transfer.

Implications for Occupational Therapy Education

The rapid pace of clinical care makes education of occupational therapy students a challenge, and curricula are increasingly using simulation (Bethea, Castillo, & Harvison, 2014). We offer the following considerations for simulation use in an occupational therapy curriculum:

Conclusion

The use of a simulator, a mock hospital suite, and clinical scenarios with embedded critical events was effective for teaching dependent transfers, handling skills, and clinical reasoning. Digital videos of each students’ transfers also allowed students the opportunity to review their transfers with the goal of improving their performance and reasoning.