A Prospective Observational Study Using the FAM-CAM

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The goal of this observational study is to learn whether family members can help identify signs of delirium in adult patients who are staying in the intensive care unit. Delirium is a sudden change in attention, thinking, or awareness that can happen during serious illness.

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• Delirium Assessment Using FAM-CAM, ICDSC, and CAM-ICU

  In this observational study, participants will not receive any study treatment or experimental intervention. The study procedures include daily delirium assessments and routine clinical data collection. Family members will complete one FAM-CAM assessment each day as soon as possible after the ICU visiting period ends. The bedside nurse will independently complete one ICDSC assessment during the same assessment period and record both the assessment result and the time of completion. A trained member of the research team will conduct one CAM-ICU assessment as the reference assessment, as close as practically possible to the FAM-CAM and ICDSC assessments. All three assessments will be completed within a 1-hour period, and the exact completion time of each assessment will be recorded. All three assessments will be conducted independently, and assessors will remain blinded to the results of the other assessments to minimize mutual influence and assessment bias.