Please assess the completion status of the following clinical trial:

Trial Title: Dexmedetomidine for the Treatment of Delirium After Heart Surgery

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE3
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Age \> 65 years~* Clinical need for treatment of psychomotor confusion unresponsive to standard analgesic medication (RASS +2 to +3)~* Heart surgery and extracorporeal circulation (ECC) within 7 days~* Written informed consent obtained before surgery~* Mentally competent at the time of written informed consent~Exclusion Criteria:~* Ongoing neuroleptic, propofol and α2 agonist medication~* Intubated patient~* Uncompensated acute circulatory failure at time of randomisation (severe hypotension with mean arterial pressure \< 55 mmHg despite volume, vasopressors and IABP)~* Severe bradycardia without pacemaker backup (heart rate \< 50 beats/min)~* AV-conduction block II-III (without pacemaker backup)~* Severe hepatic impairment (Serum bilirubin \> 101 µmol/l)~* Lithium therapy

- Gender: ALL
- Minimum Age: 65 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Dexmedetomidine (Type: EXPERIMENTAL): None
- Haloperidol (Type: ACTIVE_COMPARATOR): None
- Placebo (Type: PLACEBO_COMPARATOR): None

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