Please assess the completion status of the following clinical trial:

Trial Title: Autonomic Cardiovascular Control for Elderly Surgery Patients

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:~* Patients 65 years or older scheduled for abdominal surgery at Oslo University Hospital~Exclusion Criteria:~* Absence of a valid informed consent or assent, or consent from a legal proxy~* Patients with atrial fibrillation or a pacemaker rhythm~* Polyneuropathy~* Current treatment with beta-blockers, calcium-blockers or cholinesterase inhibitors~* Competing research project

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

Study Arms:
- Abdominal surgery (Type: None): Patients 65 years or older scheduled for abdominal surgery at Oslo University Hospital

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