Please assess the completion status of the following clinical trial:

Trial Title: Effectiveness of Continuous Negative External Pressure in Preventing Upper Airway Impairment During Routine Colonoscopy

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE1/PHASE2
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Male or female subjects undergoing elective colonoscopy at the Study Site who have fewer than three or more than three positive responses on the STOP BANG questionnaire~Exclusion Criteria:~* Presence of severe cardiopulmonary or neurologic disease as determined by the investigator~* History of vascular fragility associated with cutaneous pressure~* History of hypersensitivity to silicone~* Inability to properly fit cNEP collar to the subject~* The presence of excessive facial hair in the region where the cNEP collar is positioned~* Known carotid vascular disease, previous major neck surgery or radiation therapy to the cervical region~* Presence of anatomical abnormalities in the neck or pharyngeal region (such as enlarged tonsils)~* Inability to provide informed consent

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- active cNEP @ -45cmw (Type: EXPERIMENTAL): cNEP @ -45 cmw is applied to the anterior surface of the neck with a soft collar attached to a vacuum source.
- no intervention (Type: NO_INTERVENTION): Routine care is administered without the application of cNEP.

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