[Fostering young talents for surgery : Laparoscopy in preclinical education-Too early or exactly right?] / Nachwuchsförderung in der Chirurgie : Laparoskopie in der Vorklinik ­ zu früh oder genau richtig?

BACKGROUND: Due to the declining interest among medical students in pursuing a surgical career, the impact of demographic changes and the technical challenges, there is an increasing need to attract medical students to the surgical profession. Against this backdrop, a teaching project was developed to familiarize medical students with minimally invasive surgical techniques early in the preclinical education, thereby increasing the interest in surgery. MATERIAL AND METHODS: Within the framework of the regular anatomical dissection course the following modules on laparoscopic surgery were integrated: (1) clinical lecture on the technique and application of laparoscopy, (2) exploratory live laparoscopy on a body donor and (3) practical exercises on laparoscopic trainers. The impact of this teaching project on the interest in a surgical career and on the clinical anatomical understanding was evaluated among 295 participating medical students. RESULTS: The evaluation revealed a pronounced gender-independent interest in learning surgical skills early in the preclinical study phase. The teaching project led to a significantly increased interest in pursuing a surgical career. Moreover, the incorporation of laparoscopic teaching modules into the preclinical anatomy course enhanced the learning motivation and understanding of clinically relevant topographic anatomy. CONCLUSION: The integration of practical surgical content into preclinical anatomical education can increase the attractiveness of surgical disciplines and simultaneously optimize teaching of anatomy. Longitudinal studies are required to examine the sustainability of these clinical teaching modules in career decisions of medical students.

High-resolution rectoscopy using MHz optical coherence tomography: a step towards real time 3D endoscopy.

Colonoscopy and endoscopic ultrasound play pivotal roles in the assessment of rectal diseases, especially rectal cancer and inflammatory bowel diseases. Optical coherence tomography (OCT) offers a superior depth resolution, which is a critical factor for individualizing the therapeutic concept and evaluating the therapy response. We developed two distinct rectoscope prototypes, which were integrated into a 1300 nm MHz-OCT system constructed at our facility. The rapid rotation of the distal scanning probe at 40,000 revolutions per minute facilitates a 667 Hz OCT frame rate, enabling real-time endoscopic imaging of large areas. The performance of these OCT-rectoscopes was assessed in an ex vivo porcine colon and a post mortem human in-situ colon. The OCT-rectoscope consistently distinguished various layers of the intestinal wall, identified gut-associated lymphatic tissue, and visualized a rectal polyp during the imaging procedure with 3D-reconstruction in real time. Subsequent histological examination confirmed these findings. The body donor was preserved using an ethanol-glycerol-lysoformin-based technique for true-to-life tissue consistency. We could demonstrate that the novel MHZ-OCT-rectoscope effectively discriminates rectal wall layers and crucial tissue characteristics in a post mortem human colon in-situ. This real-time-3D-OCT holds promise as a valuable future diagnostic tool for assessing disease state and therapy response on-site in rectal diseases.