Cholinesterase Activity and DeliriUm During Critical Illness Study

Exclusion Criteria

• •Expected death within 24 hours of enrollment or lack of commitment to aggressive treatment by family or the medical team (e.g., likely withdrawal of life support measures within 24 hours of screening)
• •Active substance abuse, psychotic disorder, or homelessness without a secondary contact person (which would make long-term follow-up difficult)
• •Blindness or deafness (which would prevent assessment of the study's outcomes)
• •Inability to obtain informed consent