[Medico-legal dimension of informed consent in medicine].

The practice of the medical arts is more and more becoming framed by laws and regulations. Concurrently, the civil liability in the medical field has also been deeply changed, in particular by reversing the charge of proof of the information given to the patient. After having been reminded of the place in the juridical arsenal of informed consent to a medical procedure, its value is discussed regarding the explanations given by the physicians. Guidelines for a forensic appraisal, with the aim of evaluating and appreciating the information received by the patient, are proposed. Recent judiciary decisions about refusal of care, especially blood transfusions, are discussed.