Please assess the completion status of the following clinical trial:

Trial Title: Pregabalin Stabilize Cardiovascular Response to Intubation

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE4
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* American Society of Anesthesiologists(ASA) grade I and II scheduled for elective surgery~Exclusion Criteria:~* patient refusal.~* patients with serious chronic kidney, liver, lungs, or cardiovascular diseases.~* allergy to any of the study medications.~* patients taking sedation or antihypertensive medications.~* suspected difficult intubation or intubation time more than 22s.~* pregnant or breastfeeding women.~* BMI\>30.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 60 Years
- Healthy Volunteers: f

Study Arms:
- control group (Type: NO_INTERVENTION): the patients receive routine preoperative preparation without having Pregabalin
- Pregabalin150mg group (Type: EXPERIMENTAL): the patients receive 150mg pregabalin 60 minutes prior to the surgery
- Pregabalin300mg group (Type: EXPERIMENTAL): the patients receive 300mg pregabalin 60 minutes prior to the surgery

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