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

Dreaming During Anaesthesia and Anaesthetic Depth

This study has been completed.
Australian and New Zealand College of Anaesthetists
Information provided by (Responsible Party):
Melbourne Health Identifier:
First received: September 26, 2005
Last updated: May 28, 2013
Last verified: September 2005
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).


Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Dreaming During Anaesthesia and Anaesthetic Depth

Resource links provided by NLM:

Further study details as provided by Melbourne Health:

Enrollment: 300
Study Start Date: February 2005
Study Completion Date: March 2006
Primary Completion Date: March 2006 (Final data collection date for primary outcome measure)
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.

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
  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: NCT00226876

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
Principal Investigator: Kate Leslie, MD Melbourne Health
  More Information

Responsible Party: Melbourne Health Identifier: NCT00226876     History of Changes
Other Study ID Numbers: 2005/016
Study First Received: September 26, 2005
Last Updated: May 28, 2013

Keywords provided by Melbourne Health:
bispectral index

Additional relevant MeSH terms:
Central Nervous System Depressants
Physiological Effects of Drugs processed this record on September 21, 2017