Correlation BIS Scores Mentally Retarded Patients

Correlation Between the Severity of Mental Retardation and BIS in Mentally Retarded Patients Undergoing Dental Rehabilitation


Lead Sponsor: Rutgers, The State University of New Jersey

Source Rutgers, The State University of New Jersey
Brief Summary

The BIS monitor is a tool which assists anesthesiologists in monitoring the depth of anesthesia or level of anesthesia. The study doctors would like to see if it is useful tool for patients who are mentally challenged and require anesthesia.

Detailed Description

General endotracheal tube anesthesia (GETA) is administered for mentally retarded patients that need dental rehabilitation. GETA is done, in all patients, with routine monitoring of electrocardiography, blood pressure recording, pulse oximetry and end-tidal capnography. These measurements are also used indirectly to determine the depth of anesthesia and the anesthetic is titrated to prevent awareness during surgery and any subsequent recall (1). In addition, a recently introduced functional electroencephalography (EEG)-based awareness monitor directly analyzes the brain wave pattern during anesthetic delivery and aids the anesthesiologist in maintaining the ideal depth of anesthesia. The EEG based monitor serves to prevent awareness and recall due to light anesthesia or prolonged recovery following deep anesthesia (2). This instrument, named the Bispectral Index Scale (BIS) monitor, is non-invasive and is approved by the Food & Drug Administration. However, the BIS monitor is not being used routinely during the anesthetic management of mentally retarded patients due to a belief that such monitoring would be inaccurate in this cohort of patients (3). This assumption lacks scientific validation. Our trial will investigate the usefulness of BIS monitoring in mentally retarded patients and document any correlation between the severity of mental retardation and BIS scoring during various phases of anesthesia, such as awake status and sedation prior to anesthesia, induction and maintenance of anesthesia, and emergence and recovery from anesthesia. The anesthetic protocol will be standardized and the anesthetic management will not deviate from routine practice. The adjuvant therapies for infection prophylaxis and pain control will be administered in the usual fashion.

Overall Status Completed
Start Date December 2006
Completion Date May 2008
Primary Completion Date May 2008
Study Type Observational
Enrollment 90

Intervention Type: Device

Intervention Name: BIS monitor

Description: BIS monitor measures the depth of anesthesia and was used in the entire group

Arm Group Label: BIS monitor used for all subjects


Sampling Method: Non-Probability Sample


Inclusion Criteria:

- mentally retarded persons ages 12 to 65 undergoing dental rehabilitation

Exclusion Criteria:

- patients who are pregnant parents/and or legal guardians who do not wish to give consent

Gender: All

Minimum Age: 12 Years

Maximum Age: 65 Years

Healthy Volunteers: No

Overall Official
Last Name Role Affiliation
Rex Ponnudurai, MD Principal Investigator University of Medicine and Dentistry of New Jersey
Facility: UMDNJ University Hospital
Location Countries

United States

Verification Date

April 2015

Responsible Party

Type: Sponsor

Has Expanded Access No
Condition Browse
Arm Group

Label: BIS monitor used for all subjects

Description: BIS monitor applied to all subjects

Patient Data No
Study Design Info

Observational Model: Case-Only

Time Perspective: Prospective