Brain Dynamics in Different Stages of Arousal and Anesthesia (ECOG)
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ClinicalTrials.gov Identifier: NCT01574443 |
Recruitment Status :
Terminated
(Feasibility issues for subject recruitment and PI left the institution)
First Posted : April 10, 2012
Last Update Posted : November 6, 2017
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Condition or disease |
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Epilepsy |
- Once the electrode array is placed during the first surgery (on the day of admission) we will record brain activity as subjects are waking up from anesthesia
- While subjects are staying at New York Presbyterian hospital before the second surgery we will record brain activity. Most of the recordings will be performed as subjects are going to sleep naturally, but other recordings will be acquired during waking hours. This will not interfere with normal monitoring of seizure activity.
- Final recording session is immediately before the second operation as general anesthesia is gradually induced. During this time subjects may be asked to follow simple commands like: "Open your eyes" in order to determine the level of consciousness. Also during this session, if arterial line is placed by the anesthesiologist for real-time blood pressure monitoring we will collect several small (~1 ml) blood samples to determine blood concentration of anesthetics. Approximately 1 teaspoon of blood will be obtained in total. No additional venipuncture will be necessary.
No additional invasive procedures will be performed for the purposes of the study. We will use the same electrode array as is typically used for monitoring and mapping of epilepsy. Subjects will receive the same anesthetic agent as is commonly used for induction of anesthesia for this surgery (propofol). Subjects will be monitored in the same way as is normally done during surgical procedures and during your stay at New York Presbyterian hospital.
As a part of the study subjects may be asked simple questions as they go under anesthesia.
We may collect several small blood samples (described above) to determine the concentration of anesthetic agents.
Study Type : | Observational |
Actual Enrollment : | 5 participants |
Observational Model: | Case-Only |
Time Perspective: | Prospective |
Official Title: | Brain Dynamics in Different Stages of Arousal and Anesthesia |
Actual Study Start Date : | August 22, 2011 |
Actual Primary Completion Date : | May 11, 2015 |
Actual Study Completion Date : | April 8, 2016 |

Group/Cohort |
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epilepsy resection patients
Patients undergoing resection for refractory epilepsy
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- Characterization of changes in brain dynamics during induction of anesthesia, using electrocorticography (ECoG). [ Time Frame: < 1 hour ]The patterns of electrical activity during induction and emergence from anesthesia will be compared to what is recorded during natural sleep.

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Ages Eligible for Study: | 15 Years to 65 Years (Child, Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
1.Patients referred for epilepsy resection surgery with Dr. Theodore Schwartz
Exclusion Criteria:
- Patient refusal.
- Patients requiring rapid sequence induction because of concerns about delayed gastric emptying as a result of diabetes or other medical conditions.
- Age less than 15 or greater than 65 years old.
- Pregnant or nursing.
- Inability to follow simple commands such as "Open your eyes" and "Squeeze my hand" for any reason.
- Severe mental disability.
- Allergy to propofol or any components of the formulation.
- Poor suitability for propofol infusion because of other medical concerns such as severe heart disease.
- Patients deemed to have a difficult airway thus necessitating awake fiberoptic intubation.
- Patients with severe sleep apnea requiring CPAP/BiPAP.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01574443
United States, New York | |
New York Presbyterian Hospital/ Weill Cornell Medical College | |
New York, New York, United States, 10065 |
Principal Investigator: | Kane Pryor, MD | Weill Medical College of Cornell University |
Responsible Party: | Weill Medical College of Cornell University |
ClinicalTrials.gov Identifier: | NCT01574443 |
Other Study ID Numbers: |
1106011763 |
First Posted: | April 10, 2012 Key Record Dates |
Last Update Posted: | November 6, 2017 |
Last Verified: | November 2017 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Epilepsy |
Epilepsy Brain Diseases Central Nervous System Diseases Nervous System Diseases |