Software-guided Cognitive Stimulation to Prevents Delirium (Prevedel)

This study is a pilot randomized controlled trial, comparing a group of older patients with standardized non-pharmacological delirium prevention plus a basic tablet versus a group with standardized non-pharmacological delirium prevention plus a tablet with a software of cognitive stimulation (PREVEDEL). Software:It is a local development, including a interprofessional team of delirium healthcare experts, older patients and a team og engineers. The software was developed during the first year of this project and was inscribed for author rights. Inclusion criteria: Older patients > 65 y.o. Admitted to medicine room or intermediate care unit > 48 hrs, and informed consent to participate. Exclusion Criteria:Delirium positive, neuroleptic use, dementia, and non-spanish speakers. The study was approved by ethical committee of Hospital Clinico University of Chile Standardized Non-pharmacological intervention: Health workers were previously educated in delirium, and environmental issues were implemented. This intervention coverage in nine different domains: orientation, early mobilization, environmental noise and light, sensorial deficit, sleep, hydratation, drug reduction, and family participation. Intervention: All patients will have a tablet with or without the software PREVEDEL between 09:00-19:00 hrs. Measures: delirium will be monitoring with CAM (Confusion Assessment Method) twice a day for 5 days. Primary outcome: Delirium rate between both groups Secondary outcomes:Long of stay, severity od delirium, time of use of electronic device, and Barthel to discharge.

Patients who meet the inclusion / exclusion criteria will be randomly assigned to the Control group: They will continue to receive the standard prevention measures: delirium detection, treatment health team education and the patient's family, sleep hygiene plan, early mobilization , resolve sensorial deterioration, and delivery of information of temporal-spatial reorientation in a continuous manner, plus the use of a mobile device without installed delirium prevention software (placebo).

Patients who meet the inclusion / exclusion criteria will be randomly assigned to the experimental group:They will continue to receive standard prevention measures: Detection of delirium, education of health care team and the patient's family, sleep hygiene plan, early mobilization, resolve sensory impairments, and delivery of information of temporal-spatial reorientation in continuously, plus the use of software installed on a mobile device designed to support the prevention of delirium (Prevention software).

Delirium will be evaluated with CAM-S (the confusion assessment method Severity) whenever appropriate.

Inclusion Criteria: Older patients > 65 y.o. Admitted to medicine room or intermediate care unit > 48 hrs, and informed consent to participate. Exclusion Criteria: Delirium positive, neuroleptic use, dementia, and non-spanish speakers.