Research on the Construction and Clinical Application of an Intelligent Early Warning Model for ICU Delirium Based on Multimodal Temporal Features

INTERVENTION: Control group:Carry out delirium prevention in accordance with the existing ICU management process.;Intervention group:On the basis of conventional management, accept intelligent early warning model prompts for multimodal sequential ICU delirium risk.; CONDITION: Delirium PRIMARY OUTCOME: Duration of delirium;Incidence of delirium; SECONDARY OUTCOME: Other clinical outcomes;Other decision support tool indicators; INCLUSION CRITERIA: 1. Age >= 18 years old; 2. ICU hospitalization duration >= 48 hours; 3. Complete dynamic vital sign and score records >= 72 hours; 4. The subject or their legal representative consents to the use and follow‐up of the data, and signs the informed consent form.