Please assess the completion status of the following clinical trial:

Trial Title: Stellate Ganglion Block in Patients With Cerebral Small Vessel Disease

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

Eligibility Criteria:
Inclusion Criteria:~* Age\>18 years.~* Meeting the diagnostic criteria for cerebral small vessel disease Imaging proposed in 2013 by the international cerebral small vessel disease Expert Group, and the Consensus on Diagnosis and Treatment of Cerebral Small Vessel Disease in China in 2017.~* Dysphagia confirmed by Videofluoroscopic Swallowing Study~* Mini-Mental State Examination (MMSE)\<27, indicating the existence of cognitive impairment.~* No history of prior stroke.~* Stable vital signs.~Exclusion Criteria:~* Dysphagia that might be caused by other diseases that might cause dysphagia, such as head and neck tumors, traumatic brain injury, myasthenia gravis, etc.~* Cognitive impairment that might be caused by other diseases, such as Alzheimer's disease, Parkinson's disease, brain injury, etc.~* Neurological blockade contraindications such as bleeding tendency, blocked site infection.~* MMSE\<10, or unable to successfully finish the assessment of this study (Patients with severe mental illness or intellectual disability might have difficulty to cooperate with the assessment).~* Complicated with severe liver and kidney failure, tumors, or hematological disorders.~* Simultaneously in need to undergo other therapy that might affect the outcomes of this study.~* Pregnant or nursing females.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- The comparison group (Type: ACTIVE_COMPARATOR): The study lasted 20d for each patient. During the treatment, All the participants were provided with the rehabilitation therapy, which included routine rehabilitation, cognitive training, swallowing function training and nutrition support.~Particularly, due to dysphagia, the patients enrolled might face difficulty in eating. For patients who were able to finish intake via mouth by compensatory means, the consistency, type, and size of food bolus was arranged. For those who cannot acquire sufficient nutrition through oral intake, the nasogastric tube feeding (NGT) was provided.
- The observation group (Type: EXPERIMENTAL): The study lasted 20d for each patient. During the treatment, All the participants were provided with the rehabilitation therapy, which included routine rehabilitation, cognitive training, swallowing function training and nutrition support.~Particularly, due to dysphagia, the patients enrolled might face difficulty in eating. For patients who were able to finish intake via mouth by compensatory means, the consistency, type, and size of food bolus was arranged. For those who cannot acquire sufficient nutrition through oral intake, the nasogastric tube feeding (NGT) was provided.~Based on the invention above, the patients in the observation group were provided with SGB, using 1.5ml of 2% Lidocaine hydrochloride (1ml: 0.5mg) and 500ug of Vitamin B12 (1ml: 0.5g).

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