Biobehavioral Recovery From Surgery and Anesthesia

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: NCT00176696
Recruitment Status : Terminated (Principal Investigator has left the UMDNJ)
First Posted : September 15, 2005
Last Update Posted : October 6, 2016
Information provided by (Responsible Party):
Rutgers, The State University of New Jersey ( University of Medicine and Dentistry of New Jersey )

Brief Summary:
Reducing postoperative pain leads to increased patient comfort and facilitates speedy recovery and discharge from the hospital following surgery. The focus of controlling postoperative pain has gradually shifted from postoperative management to intraoperative management. The investigators believe that this study is a unique opportunity to assess the adequacy of intraoperative analgesia, allowing for immediate administration of the appropriate opioid analgesics. The purpose of this research is to bring to light the applicability of facial electromyography as an intraoperative solution to postoperative pain management.

Condition or disease Intervention/treatment
Pain, Postoperative Device: Use of FACE monitor and BIS monitor

Detailed Description:

After consenting to enter the study, the subject will be asked a series of questions regarding his/her medical history. He/she will be shown the test for determining consciousness by squeezing the experimenter's hand when asked. It will be explained to him/her that once unconscious, he/she will not be able to respond to the command of squeezing the hand. The facial monitor will be shown to the patient, as well as its location of placement.

Intraoperative Period: The leads will be placed for the FACE monitor as well as for the BIS monitoring device. The objective of the BIS monitor which is already in use in the University Hospital Operating room suites is to determine consciousness. An identical and typical anesthetic protocol will be utilized for all the patients in order to eliminate anesthetic factors. The protocol is as follows:

After administration of propofol for induction, a forearm tourniquet device will be inflated to a pressure greater than 200 mm Hg. A muscle relaxant will then be given once the tourniquet is inflated while the arm with the tourniquet will not be paralyzed. This allows for a check on the unconsciousness of the patient; that is, the patient will be told, "squeeze my hand". It is expected that no patient will respond by squeezing his or her hand because they are unconscious and anesthetized. The maximum length of time the cuff will be inflated is 20 minutes. Tourniquets applied to the entire leg or arm are normally inflated for up to 120 minutes and are standard practice in orthopedic surgery.

One group of patients, determined randomly, will be administered 250 ug of fentanyl during induction of anesthesia, while the second group, also determined randomly, will be administered 50 ug of fentanyl. Both groups of patients will be administered an inhalational anesthetic (isoflurane, desflurane, or sevoflurane) at the level 30% above that which insures unconsciousness (called 1.1 MAC), but will not be given nitrous oxide during the 10 minutes of our study period due to this gas' effect on Hagihira's "loss of bicoherence" phenomenon.

The study period will begin 5 minutes before surgical incision, and will end 5 minutes after surgical incision. Our hypothesis is that central registration of pain exists despite the presence of adequate unconsciousness in the patient, and FACE technology will complement the use of the BIS (EEG) monitor to ensure effective administration of anesthesia for patients in the future.

Study Type : Observational
Actual Enrollment : 20 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Detection of Nociception ("Pain") During General Anesthesia
Study Start Date : August 2005
Actual Primary Completion Date : April 2007
Actual Study Completion Date : April 2007

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Anesthesia
U.S. FDA Resources

Intervention Details:
    Device: Use of FACE monitor and BIS monitor
    Face monitor records facial muscle activity
    Other Name: BIS (Bispectral Score)determines the depth of anesthesia

Primary Outcome Measures :
  1. detection of pain during general anesthesia [ Time Frame: after induction of anesthesia ]

Secondary Outcome Measures :
  1. Visual analogue scale for first two days post anesthesia [ Time Frame: 2 post op days ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
subjects undergoing surgery

Inclusion Criteria:

  • Subjects 18-65 years of age
  • Subjects who are English speaking
  • Subjects undergoing surgery in the supine position
  • Subjects who are undergoing a procedure where the surgical incision is expected to be at least 4 inches
  • Subjects who are undergoing a surgical procedure below the level of their arms.
  • Female subjects who have a negative Sure-Vue pregnancy test.
  • Subjects who are undergoing surgery under general anesthesia.

Exclusion Criteria:

  • If the scheduled surgery involves the head, neck or arms.
  • Subjects who have a history of chronic pain
  • Subjects who have cognitive disabilities secondary to medical, chemical and genetic causes.
  • Subjects who have peripheral vascular disease of the arms.
  • Subjects who have carpal tunnel syndrome.
  • Subjects who have psychiatric, substance abuse and cognitive impairments
  • Subjects who have had a stroke which has affected function of the upper extremities
  • Subjects who have had a mastectomy or other type of surgery which may have affected the lymph nodes of the arms
  • Subjects who do not have a telephone
  • Subjects who are having surgery under nerve block or regional anesthesia
  • Subjects who are pregnant
  • Subjects who have an electrical source, i.e. pacemaker or defibrillator

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): NCT00176696

Sponsors and Collaborators
University of Medicine and Dentistry of New Jersey
Principal Investigator: Henry L. Bennett, PhD Rutgers, The State University of New Jersey

Responsible Party: University of Medicine and Dentistry of New Jersey Identifier: NCT00176696     History of Changes
Other Study ID Numbers: 0120050013
First Posted: September 15, 2005    Key Record Dates
Last Update Posted: October 6, 2016
Last Verified: June 2008
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Keywords provided by Rutgers, The State University of New Jersey ( University of Medicine and Dentistry of New Jersey ):
general anesthesia
depth of anesthesia

Additional relevant MeSH terms:
Pain, Postoperative
Neurologic Manifestations
Nervous System Diseases
Postoperative Complications
Pathologic Processes
Signs and Symptoms
Central Nervous System Depressants
Physiological Effects of Drugs