This topic came out top in a poll where 326 doctors were asked which situations they felt most worried about in their career.
All three scenarios of one of the new case studies focus on different aspects of this issue.
London and BBC Breakfast GP Dr Rosemary Leonard helped create the medical and ethical online scenarios by providing advice on how doctors should use GMC guidance to deal with these complex dilemmas.
Two of the case studies contain scenarios which aim to help doctors and patients understand better the new GMC guidance on end-of-life care, which came into effect on 1 July 2010.
Site user Dr Kausik Maulik said: 'Good Medical Practice in Action is such an informative tool to use as I am able to put myself in the patients' shoes.
‘The tutorials reinforce the importance to maintain confidentiality and I now feel better equipped to sympathetically respond to patients’ worries whilst also providing them with the highest standard of care.’