Fault, hospital infection or failure to inform?
The legal classification determines the procedure. A technical fault requires showing a breach of professional standards: inappropriate procedure, lack of monitoring, negligent late diagnosis. A hospital-acquired infection benefits, in some cases, from a presumption of liability favourable to the victim. A failure to inform — the absence of fair disclosure of risks before the procedure — is an autonomous ground, even where the procedure itself was correctly performed.
Where none of these grounds is met but the damage is serious and abnormal, a therapeutic hazard may be compensated by the ONIAM under national solidarity.