Effectiveness of the Delirium Zero Protocol to Prevent the Onset of Delirium in Patients Undergoing Hip Fracture Surgery

Inclusion Criteria: * The participants will be patients over 65 years old * Admitted to the orthopedic hospitalization units of La Fe University and Polytechnic Hospital (La Fe Health Department, Valencia, Spain) and Manises Hospital (Manises Health Department, Spain). * Who are undergoing surgery for hip fracture * Accompanied by a family member/caregiver who understands Spanish and knows how to read and write it. Exclusion Criteria: \- Delirium at the time of admission to the trauma guard (assessed with the CAM scale). Have previously been diagnosed with severe cognitive impairment according to the Pfeiffer scale, which corresponds to a score of 8-10 points. * Have previously been diagnosed with any serious mental disorder (schizophrenic disorders, schizotypal disorders, persistent delusional disorders, substance-induced delusional disorders, schizoaffective disorders, other non-organic psychotic disorders, bipolar disorder, serious depressive episode with psychotic symptoms, and severe recurrent depressive disorders). - that they have delirium at the time of admission to the trauma room. * That they have a language barrier, deep aphasia, coma, or terminal illness. * That they have been previously enrolled in this study. * That before the surgery they were admitted to a different hospital unit than those participating in the study, although they may then be transferred to one of these trauma units. * That they present brain alterations (tumors, occupying lesions).