This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Changes of the Neuronal Activity in the Subthalamic Nucleus Under Remifentanil Sedation During Stereotactic Electrode Implantation

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified December 2007 by Hadassah Medical Organization.
Recruitment status was:  Active, not recruiting
Information provided by:
Hadassah Medical Organization Identifier:
First received: December 30, 2007
Last updated: NA
Last verified: December 2007
History: No changes posted

Deep brain stimulation is commonly used for the treatment of movement disorders. Electrode positioning is usually performed under local anesthesia in fully awake patients. The procedure is uncomfortable to the patients who has to remain motionless during the whole surgery. Previous reports of electrode positioning under general anesthesia was found to be less accurate. This result was probably due to the effect of the anesthetics on the electrical activity of the basal ganglia.

The purpose of this study is to detect possible changes in the electrical activity of the basal ganglia related to remifentanil sedation. electrical activity of single neurons will be recorded before, during and after sedation.

Condition Intervention
Movement Disorders Effect of Remifentanil Drug: Remifentanil

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science

Resource links provided by NLM:

Further study details as provided by Hadassah Medical Organization:

Primary Outcome Measures:
  • Electrical activity in the basal ganglia [ Time Frame: During the experiment ]

Enrollment: 20
Arms Assigned Interventions
Experimental: A
The patients get a period of sedation with remifentanil, before, during and after which, the changes in the electrical activity of the Basal Ganglia is recorded.
Drug: Remifentanil
After the mapping electrode is in situ, recording of baseline electrical activity is done for two-three minutes and an infusion of Remifentanil, 0.1 microgram per kilogram per minute is started. This procedure continues for a few minutes until the patient is sedated and then the infusion is stopped and the patient allowed to recover. The recordings continue during the whole procedure.


Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients with movement disorder, who are candidates for implantation of deep brain stimulation electrode.

Exclusion Criteria:

  • Suspected difficult intubation
  • history of sleep apnea
  • known allergy for remifentanil
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00588926

Sponsors and Collaborators
Hadassah Medical Organization
Principal Investigator: Dan Eimerl, MD Hadassah Medical Organization
  More Information

Responsible Party: Dr. Dan Eimerl, M.D., Dept. Anesthesiology, Hadassah Medical Center, Jerusalem, Israel. Identifier: NCT00588926     History of Changes
Other Study ID Numbers: 221107-hmo-ctil
Study First Received: December 30, 2007
Last Updated: December 30, 2007

Keywords provided by Hadassah Medical Organization:
Deep Brain Stimulation
Movement Disorders
Basal Ganglia electrical activity

Additional relevant MeSH terms:
Movement Disorders
Central Nervous System Diseases
Nervous System Diseases
Analgesics, Opioid
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Hypnotics and Sedatives
Anesthetics, Intravenous
Anesthetics, General
Anesthetics processed this record on August 23, 2017