Relevance. The most important skills that characterize the competence and professionalism of a doctor are conducting a patient examination to establish a diagnosis, analysis, comparison and synthesis of the information obtained. To gain experience, a doctor has to practice for years. Using virtual reality simulators with an infinite number of pathology options and various nosologies, skills can be mastered much faster without waiting for a patient with a particular pathology.
Aim. Comparison of the effectiveness of two teaching methods: traditional (seminars and lectures at the department with a clinic – group 2) and combined methods with the additional use of the XR-Body mixed reality simulator (group 1) for developing examination and diagnosis skills in acute abdominal pathology with various nosologies.
Material and methods. A prospective, randomized, controlled study with blinded data analysis took place during the period from November 2023 to December 2024. The research participants (RP) were volunteers from 4th-year students of the Faculty of Medicine (n=93) who completed the mandatory stage of training at the Department of Faculty Surgery (clinical department) according to the approved program. The scenarios were created on the basis of a patient examination model in the emergency room. The examination and diagnosis were carried out by the RP on a standardized patient (SP), which simulated patients with various cases of acute abdominal pathology. The difference between the groups was that the participants of the 1st group, before the SP examination, underwent one-time training in virtual reality using the cases of the XR-Body mixed reality simulator (LLC BMS/LLC GEOTAR-Med). The following stages of the diagnostic search were analyzed: gathering information about actual complaints and anamnesis; superficial palpation; deep palpation; diagnosis; time spent on anamnesis, performing palpation, making a diagnosis and total time of the session. A comparison was made both for each stage as a whole and for individual parameters of each stage. Feedback source: expert assessments and data from the built-in session tracking system on the XR-Body simulator – Tactile Tracking System (TTS). The effectiveness of the educational technology was assessed using the Kirkpatrick model and calculating indices.
The results are presented for the correct distribution of indicators as M±SD, where M is the arithmetic mean, SD is the standard deviation, and for the incorrect distribution as Me is median, CI is confidence intervals, including the values of the minimum and maximum values (min & max) or 10, 25 – 90, 75 percentiles. Dichotomous and ordinal qualitative data are expressed as frequencies (n) and percentage distribution of features. Differences were considered statistically significant at p<0.05.
Results. The study groups had no significant differences in age, education level, gender and experience of examining patients with acute abdominal pathology. At the first stage of the diagnostic search (gathering of complaints and anamnesis), statistically significant differences were determined between the RP of the 1st and 2nd groups: in points M1=9.50, CI SD 3.26–4.95 and M2=7.15, CI SD 1.98–3.00 (p=0.001) with a maximum possible of 19 points. The RP of the 1st group more often asked questions characterizing the pain syndrome (p<0.05), about the presence of a history of operations (p=0.045) and injuries (p=0.003). When comparing the results of abdominal palpation, statistically significant differences were obtained with an advantage in favor of group 1 when performing superficial palpation: M1=8.50, CI SD 1.05–1.59; M2=7.66, CI SD 1.66–2.52 (p=0.018). 83% of RP (group 1) completely palpated all areas of the abdomen, in group 2 – 59.6% (p=0.011). When assessing the duration of the examination and the correctness of the diagnosis, statistically significant differences were determined for all time characteristics with a significant advantage of RP of group 1 (p<0.02). The total time of the appointment was M1=296 sec, CI SD 77–118; M2=374 sec, CI SD 78.92–119.29 (p=0.0001).
Conclusion. The study participants who underwent training in virtual reality using the XR-Body simulator cases (Group 1), compared to Group 2 (traditional training), demonstrated better results in gathering information about actual complaints and anamnesis from a standardized patient, both for this stage as a whole and for individual questions of the diagnostic search, were interested in the patient’s history of operations 1.7 times more often (p=0.045) and injuries 6.1 times more often (p=0.003); performed correct complete superficial palpation of the abdomen 23% more often and deep palpation 12% more often than the study participants in the control group (Group 2); demonstrated a statistically significant higher speed of patient examination for all analyzed parameters; more often made the correct diagnosis, both when compared in general for all nosologies (by 21%), and for individual diseases when diagnosing “Acute appendicitis” by 27%, “Acute cholecystitis” by 22%, “Acute pancreatitis” by 9% and “Peptic ulcer” by 37%. The new educational technology demonstrated maximum efficiency in assessing the reaction (index Ilr = 0.96) and practicing superficial palpation skills (index Itt = 0.94) (maximum index value 1.0).