Memory During Anesthesia: the Role of Stress Hormones

February 8, 2011 updated by: Catholic University of the Sacred Heart
  1. To investigate whether the auditory stimulation causes changes in hormones levels (cortisol+prolactin) during general anesthesia.
  2. To determine if there is a correlation between hormones levels (cortisol+prolactin) and dreams recall.
  3. To investigate whether, in patients receiving auditory stimulation, there is a correlation between hormones levels (cortisol+prolactin), serum remifentanil concentration and detection of implicit memory.
  4. To investigate the presence of primary auditory cortex activation (temporal lobe) in patients with implicit memory and in those with dreams recall using the EEG-ERP 128 channels GES300 EGI system.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

Patients from group A, during maintenance of anesthesia, at the time of trocar insertion, will listen (via MP3) a piece of one of two stories, "Puss in Boots" and "Pinocchio", each followed by four keywords. In group B, patients will be isolated from the sounds of the operating room using specific headphones.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
110

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Italy
      • Rome, Italy
        • Recruiting
        • Catholic University Of Sacred Heart
        • Contact:
        • Principal Investigator:
          • Liliana Sollazzi, Associate Professor

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Patients sheduled for minor elective laparoscopic surgery

Description

Inclusion Criteria:

  • Age between 18 and 70 years old
  • Class-ASA Physical Status I-II

Exclusion Criteria:

  • Psychiatric or neurological disorders and/or hearing disorders
  • Obesity (Body Mass Index > 30)
  • Drug addiction, alcoholism
  • Patients with an education level below middle school
  • Patients with difficulty in understanding the Italian language
  • Patients treated with corticosteroids and/or estrogens, pregnant patients and patients suffering from hypercorticism

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Control
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Hormones levels
Time Frame: 5 minutes after achieving a pneumoperitoneum pressure of 12 mmHg
The blood sample will be taken during anaesthesia to determine intraoperative hormones (cortisol + prolactine) levels.
5 minutes after achieving a pneumoperitoneum pressure of 12 mmHg
Hormones levels
Time Frame: Baseline
The blood sample will be taken 30 minutes before induction of anaesthesia to determine baseline hormones (cortisol + prolactine) levels.
Baseline

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Remifentanil concentration
Time Frame: 5 minutes after achieving a pneumoperitoneum pressure of 12 mmHg
One blood sample will be taken to determine steady state concentration of remifentanil (only in a subset of patients).
5 minutes after achieving a pneumoperitoneum pressure of 12 mmHg
Memory
Time Frame: Approximately 24 hours after surgery for explicit memory, implicit memory and for dreams recall detected after awakening from anesthesia
Patients will be asked to associate with keywords the first thing that comes them to mind (implicit memory). Also eplicit memory and dreams recall will be tested at the same time. The content of intraoperative dreams (confirmed by a brief post-anesthesia interview) will be analyzed using the 5-point Likert scale.
Approximately 24 hours after surgery for explicit memory, implicit memory and for dreams recall detected after awakening from anesthesia
Primary auditory cortex activation
Time Frame: 5 minutes after achieving a pneumoperitoneum pressure of 12 mmHg
ERP-EEG monitoring system with 128 channel EGI GES300
5 minutes after achieving a pneumoperitoneum pressure of 12 mmHg

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Catholic University of the Sacred Heart

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 1, 2010

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 1, 2011

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 1, 2011

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 9, 2010

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 16, 2010

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 17, 2010

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 9, 2011

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 8, 2011

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
October 1, 2009

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 918/09

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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