Mixed reality for teaching catheter placement to medical students: a randomized single-blinded, prospective trial

Abstract

Background Cost-effective methods to facilitate practical medical education are in high demand and the “mixed-reality” (MR) technology seems suitable to provide students with instructions when learning a new practical task. To evaluate a step-by-step mixed reality (MR) guidance system for instructing a practical medical procedure, we conducted a randomized, single-blinded prospective trial on medical students learning bladder catheter placement. Methods We enrolled 164 medical students. Students were randomized into 2 groups and received instructions on how to perform bladder catheter placement on a male catheterization training model. One group (107 students) were given their instructions by an instructor, while the other group (57 students) were instructed via an MR guidance system using a Microsoft HoloLens. Both groups did hands on training. A standardized questionnaire covering previous knowledge, interest in modern technologies and a self-evaluation was filled out. In addition, students were asked to evaluate the system’s usability. We assessed both groups’s learning outcome via a standardized OSCE (objective structured clinical examination). Results Our evaluation of the learning outcome revealed an average point value of 19.96 ± 2,42 for the control group and 21.49 ± 2.27 for the MR group - the MR group’s result was significantly better (p = 0.00). The self-evaluations revealed no difference between groups, however, the control group gave higher ratings when evaluating the quality of instructions. The MR system’s assessment showed less usability, with a cumulative SUS (system usability scale) score of 56.6 (lower half) as well as a cumulative score of 24.2 ± 7.3 (n = 52) out of 100 in the NASA task load index. Conclusions MR is a promising tool for instructing practical skills, and has the potential to enable superior learning outcomes. Advances in MR technology are necessary to improve the usability of current systems. Trial registration German Clinical Trial Register ID: DRKS00013186

Mixed reality applications in urology: Requirements and future potential

“…They also found beneficial side effects like increased student engagement, interactivity, and enjoymentIn a randomized, prospective and single-blinded study, Schoeb et al evaluated educating medical students in bladder catheter placement through an MR-guided system (HoloLens). It was shown that MR is an effective tool for medical students in bladder catheter placement education [ 15 ]. Parkhomenko et al reported that, through immersive VR (iVR) headsets, the patient-specific anatomy-based models could determine the patient's renal anatomy and the optimal location for percutaneous access before percutaneous nephrolithotomy [ 16 ].…”

Virtual und Augmented Reality in der Urologie

“…Die praktische Ausbildung von Studenten kosteneffektiv zu gestalten kann zudem über ein MR-Tool mit Smartglass gelingen. Schoeb et al [4] haben dafür eine MR-Applikation konfiguriert die "stepby-step" mittels auditiven und visuellen Anweisungen Studenten (n = 57) über die Smartglass Hololens den Blasenkatheterismus lehrt und praktisch anleitet. In ihrer randomisierten Studie stellten sie der MR-Gruppe 107 Studenten gegenüber, die klassisch durch einen Ausbilder im Rahmen eines Seminars angeleitet wurden.…”

“…Die Mixed Reality (MR) vereint meist mittels einer Smartglass Attribute dieser beiden Welten und ist entsprechend ein Hybrid aus realen und virtuellen Sensationen mit dynamischen Übergängen von VR in AR [ 4 ].…”

“… Anatomieunterricht Visible Body = Tablet- oder Smartphone-basierte AR-Applikation mit Generierung virtueller Organmodelle Erhöhtes Engagement und bessere räumliche Vorstellung 2020 Schoeb et al. [ 4 ] Studentenpraktikum Blasenkatheterismus Smartglass MR-assistierte (HoloLens)Applikation mit praktischer Anleitung eines Blasenkatheters Effiziente und kostengünstige Übermittlung von Lerninhalten 2019 Yamada et al. [ 19 ] Nierentumor 3D-Rekonstruktion der Nieren mit Holoeyes-Software und AR-Visualisierung via Smartglass Mirage Solo Unkomplizierte AR-3D-Rekonstruktion zur präoperative Planung 2019 Yoshida et al.…”

Individual Experience and Engagement in Avatar-Mediated Environments: The Mediating Effect of Interpersonal Attraction

“…Many previous studies (e.g., Sáez-López et al, 2020; Tang et al, 2020) have indicated the potential of using MR and AR to assess teaching and learning in higher education. However, both MR and AR can be costly and sensitive to errors (Schoeb et al, 2020). In comparison to these technologies, virtual learning environments have been found to be less costly and require less time to set up and run (DePape et al, 2019; Parsons and MacCallum, 2020).…”