Please assess the completion status of the following clinical trial:

Trial Title: Effectiveness of Nebulized Dexmedetomidine for Treatment of Obstetric Post-Dural Puncture Headache

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

Eligibility Criteria:
Inclusion Criteria:~* Post-partum females diagnosed with PDPH after elective caesarean section under spinal anesthesia and with visual analogue score (VAS) ≥ 4 and Lybecker et al. classification score ≥2.~* Age 21- 40 years old.~* ASA I and ASA II.~* Accepted mental state of the patient.~Exclusion Criteria:~* Patient refusal.~* ASA Grade III and IV.~* Emergent caesarean section.~* Inadequate temporal window.~* Hypertensive disorders of the pregnancy.~* Atrial fibrillation.~* History of allergy to local anesthetics.~* History of chronic headache, migraine, convulsions, and cerebrovascular accident.~* Contraindication to spinal anesthesia: coagulopathy, infection at site of injection

- Gender: FEMALE
- Minimum Age: 21 Years
- Maximum Age: 40 Years
- Healthy Volunteers: f

Study Arms:
- Control group (Type: PLACEBO_COMPARATOR): received ultrasonic nebulization of 4mL 0.9% saline twice daily for 3 days
- Dexmedetomidine group (Type: ACTIVE_COMPARATOR): received ultrasonic nebulization of 1 µg/kg dexmedetomidine diluted in 4mL 0.9% saline twice daily for 3 days. The intervention will be continued until achieving a VAS score ≤3 and Lybecker et al. classification score \<2 and or for a maximum of 72 hours. Patients in this group who achieved the target scores before 72 hours will be given 4ml of saline 0.9% nebulization to maintain blinding.

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