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Depth of Anesthesia on Implicit Memory

NCT00584324 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 70

Last updated 2026-04-07

No results posted yet for this study

Summary

Purpose of this study is to see if different levels of anesthesia have an effect on hearing spoken words without awareness of having heard them or anxiety after surgery.

Conditions

  • Anesthesia, General
  • Memory

Interventions

COMBINATION_PRODUCT

BIS 40

Mini-mental state exam: For subjects \> 60, this exam will be administered pre-operatively. Spielberger State-Trait anxiety test: Spielberger test just before being taken to the operating room. Spoken word-stem completion test: After discharge from recovery but within 24 hrs. post surgery, this test along with the anxiety test will be administered. Bispectral Index Monitor: The physiologic monitor is used intraoperatively to assess surgical anesthesia. Audio File: Playing an audio file (a list of spoken words) via headphones under general anesthesia during the surgical procedure.

COMBINATION_PRODUCT

BIS 60

Mini-mental state exam: For subjects \> 60, this exam will be administered pre-operatively. Spielberger State-Trait anxiety test: Spielberger test just before being taken to the operating room. Spoken word-stem completion test: After discharge from recovery but within 24 hrs. post surgery, this test along with the anxiety test will be administered. Bispectral Index Monitor: The physiologic monitor is used intraoperatively to assess surgical anesthesia. Audio File: Playing an audio file (a list of spoken words) via headphones under general anesthesia during the surgical procedure.

Sponsors & Collaborators

  • University of Oklahoma

    lead OTHER

Principal Investigators

  • Mehmet S. Ozcan, MD · University of Oklahoma

Study Design

Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
55 Years
Max Age
90 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2006-03-31
Primary Completion
2012-01-31
Completion
2012-01-31

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00584324 on ClinicalTrials.gov