Inclusion criteria:  Patients undergoing surgery and diagnostic tests at Hospital Punta Europa in ordinary activity. Patients undergoing surgery and diagnostic tests in external health care agreement at the Clínica Virgen del Rosario in Algeciras.  Exclusion criteria:  Urgent surgical interventions -Urgent diagnostic tests. Patients who have signed the revocation of informed consent. Absence at the surgical appointment - Lack of collaboration Resolution of the illness causing the surgical appointment. No presentation of illness Refusal by the physician Allergies