Please assess the completion status of the following clinical trial:

Trial Title: Minimizing ICU Neurological Dysfunction With Dexmedetomidine-induced Sleep

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE2/PHASE3
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Age ≥ 60~* Scheduled for a cardiac surgical procedure with planned post-operative admission to the CSICU for ≥ 24 hours~* Scheduled same day surgical admission~Exclusion Criteria:~* Blind, deafness or the inability to speak English~* Greater than 2 days of ICU admission in the month preceding the current surgical procedure~* Renal and liver failure requiring dialysis or Child-Pugh score \> 5~* Follow-up difficulties (i.e. active substance abuse, psychotic disorder, homelessness)~* Previous cardiac surgery within 1 year of surgical procedure~* Allergy to dexmedetomidine~* Chronic therapy with benzodiazepines and/or antipsychotics~* Severe deficit due to structural or anoxic brain damage~* Surgical procedure requiring total circulatory arrest~Objective Drop Criteria~* Scheduled for a second surgical procedure during hospital stay~* Post-operative intubation \> 12 hours

- Gender: ALL
- Minimum Age: 60 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Dexmedetomidine-induced sleep (Type: EXPERIMENTAL): Precedex (Dexmedetomidine) intervention: Intravenous administration of 1mcg/kg over 40 minutes.
- Placebo (Type: PLACEBO_COMPARATOR): Placebo of normal saline: Intravenous administration of normal saline over 40 minutes.

Based on this trial design, predict the completion outcome and termination type (if applicable).