I am a medical student too. I loved my anaesthesia rotation so keep in mind I would have been really happy to talk about anything anaesthesia related. Essentially when I was asked to do a presentation at the end of rotation I brainstormed my choices in 3 main categories:
1. Patient-specific issue (e.g. eclampsia, pulmonary hypertension).
2. Surgery-specific issue (e.g. TURP syndrome, bone cement implantation syndrome)
3. Anaesthesia-specific issue (e.g. GA vs regional, monitoring awareness)
I ended up talking about TIVA by the way since it was my first time seeing one and talked a bit about the TCI algorithms.