Please assess the completion status of the following clinical trial:

Trial Title: Perioperative Changes of Cerebrovascular Autoregulation and Association With Cognitive Function

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* elective major non-cardiac/non-vascular surgery~* anticipated surgical duration \>120 minutes~* age \>= 60 years~* indication for invasive blood pressure measurement~* native German speaker~Exclusion Criteria:~* history of cerebrovascular disease~* preexisting cognitive impairment~* history or presence of neurological disease

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

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