What is the case law on informed consent and general anaesthetic?

The plaintiff also advances the argument that she was not advised of the risk of injury or damage resulting from the introduction of the general anaesthetic and therefore her consent was not an “informed consent”. In referencing the decision of Justice Lofchik in De Vos v. Robertson, 2000 CarswellOnt 44, she says the defendant is liable on the basis physicians are required to disclose the nature and gravity of proposed operations, including any “material” circumstances and the defendant failed to do so in the present circumstance.