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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03732092
Other study ID # 2018A04355
Secondary ID
Status Completed
Phase
First received
Last updated
Start date March 15, 2018
Est. completion date December 15, 2019

Study information

Verified date December 2020
Source Hangzhou Normal University
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Analyze the behavioral response of patients with disorders of consciousness through olfactory stimulation, compare the response of olfactory stimulation in patients with different consciousness, and analyze the impact of olfactory stimulation on diagnosis; After the first, third, and sixth months of initial enrollment, the recovery of prognosis was tracked by the Coma Recovery Scale-Revision (CRS-R).


Description:

Previous studies suggested that olfactory stimulus have some effect on some patients with disorders of consciousness. Then, the aim of the present study is to know the prognostic value of olfactory stimulation and the diagnosis for DOC patients. DOC patients were recruited (standard diagnosis procedure is 5 times CRS-R testing within 10 days). The different stimuli were as follows: 1) 1-octene-3-ol, odor. 2) pyridine, odor. 3) water. We presented these stimuli randomly, and we recorded the patient's CRS-R scale behavioral response and response to olfactory stimulation. Analyze the behavioral response of patients with disorders of consciousness through olfactory stimulation, compare the response of olfactory stimulation in patients with different consciousness, and analyze the impact of olfactory stimulation on diagnosis; After the first, third, and sixth months of initial enrollment, the recovery of prognosis was tracked by the Coma Recovery Scale-Revision (CRS-R).


Recruitment information / eligibility

Status Completed
Enrollment 20
Est. completion date December 15, 2019
Est. primary completion date November 15, 2018
Accepts healthy volunteers No
Gender All
Age group 18 Years to 65 Years
Eligibility Inclusion Criteria: - 18-65 years old; - non-acute phase; - after coma; - no nerve stimulation drugs within 48 hours before the implementation of the study; - no neuromuscular blockers within 24 hours before implementation Exclusion Criteria: - history of forehead injury; - nasal fractures; - tracheotomy; - developmental mental or neurological diseases leading to recorded dysfunction; - severe fractures of the extremities.

Study Design


Intervention

Diagnostic Test:
Coma Recovery Scale-Revised
Patients with disorders of consciousness were assessed by Coma Recovery Scale-Revised (CRS-R). In addition, we selected three stimuli: 1) 1-octene-3-ol, 2) pyridine, 3) water. We presented these three stimuli in front of the patients nose for 3 seconds.

Locations

Country Name City State
China International Vegetative State and Consciousness Science Institute, Hangzhou Normal University Hangzhou Zhejiang

Sponsors (1)

Lead Sponsor Collaborator
Jing Wang

Country where clinical trial is conducted

China, 

References & Publications (1)

Chiaravalloti A, Pagani M, Micarelli A, Di Pietro B, Genovesi G, Alessandrini M, Schillaci O. Cortical activity during olfactory stimulation in multiple chemical sensitivity: a (18)F-FDG PET/CT study. Eur J Nucl Med Mol Imaging. 2015 Apr;42(5):733-40. doi — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Coma Recovery Scale-Revised (CRS-R) The CRS-R consists of 23 items grouped in six subscales addressing auditory, visual, motor, oromotor, communication and arousal functions. The higher items represent conscious related behaviour while the lower items for each sub-scale represent reflexive activity. Basis for scoring was the presence or absence of the specific behaviour in response to standard stimuli. Patients were followed up for 1, 3, and 6 months to track the prognosis of patients by CRS-R. six months later
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