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Dreaming During Anaesthesia and Anaesthetic Depth

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00226876
Recruitment Status : Completed
First Posted : September 27, 2005
Last Update Posted : May 30, 2013
Australian and New Zealand College of Anaesthetists
Information provided by (Responsible Party):
Melbourne Health

Brief Summary:
Patients commonly report that they have been dreaming when they awaken from general anaesthesia. Our hypothesis is that patients who report dreaming are less deeply anaesthetised during anaesthesia than patients who do not report dreaming. Depth of anaesthesia will be determined using a processed electroencephalographic monitor (called the BIS monitor).

Condition or disease

Detailed Description:
In this study, we will record the depth of anaesthesia during surgery with the BIS monitor and then interview patients immediately upon emergence to determine whether they recall dreaming or not. The depth of anaesthesia of dreamers and non-dreamers will be assessed.

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Study Type : Observational
Actual Enrollment : 300 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Dreaming During Anaesthesia and Anaesthetic Depth
Study Start Date : February 2005
Actual Primary Completion Date : March 2006
Actual Study Completion Date : March 2006

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 50 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
Patients presenting for elective non-cardiac surgery

Inclusion Criteria:

  • Age 18-50 years
  • American Society of Anesthesiologists physical status 1-3
  • Non-cardiac surgery under relaxant general anaesthesia
  • Tracheal extubation planned at end of surgery

Exclusion Criteria:

  • Inadequate English language skills (due to language barrier, cognitive deficit or intellectual disability)
  • Major drug abuse or psychiatric condition
  • Expected to be unable to co-operate or be available for followup

Information from the National Library of Medicine

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 identifier (NCT number): NCT00226876

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Australia, Victoria
Royal Melbourne Hospital
Melbourne, Victoria, Australia, 3050
Australia, Western Australia
King Edward Memorial Hospital for Women
Perth, Western Australia, Australia, 6000
Royal Perth Hospital
Perth, Western Australia, Australia, 6000
Sponsors and Collaborators
Melbourne Health
Australian and New Zealand College of Anaesthetists
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Principal Investigator: Kate Leslie, MD Melbourne Health
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Responsible Party: Melbourne Health Identifier: NCT00226876    
Other Study ID Numbers: 2005/016
First Posted: September 27, 2005    Key Record Dates
Last Update Posted: May 30, 2013
Last Verified: September 2005
Keywords provided by Melbourne Health:
bispectral index