Study of the Approximate Entropy of Adrenocorticotropic Hormone and Cortisol Secretion in Patients With Head Injury

June 23, 2005 updated by: National Center for Research Resources (NCRR)

OBJECTIVES: I. Determine the randomness of adrenocorticotropic hormone (ACTH) and cortisol secretion using approximate entropy in patients who have sustained a head injury.

II. Determine the correlation between randomness of ACTH and cortisol secretion and stages of sleep in these patients.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

PROTOCOL OUTLINE: Patients are stratified according to type of injury (closed head injury due to trauma vs vascular accidents). Patients are admitted two times for overnight assessment.

Admission 1: Patients receive cosyntropin IV. Blood is drawn at 30 and 60 minutes after IV infusion. Patients receive oral metyrapone before sleep. A sham sleep study is conducted through the night and patients' blood is drawn in the morning.

Admission 2: At least 2 weeks after admission 1, patients return for an overnight admission. Starting in the evening, blood is drawn every 15 minutes for 12 hours. A sleep study is conducted through the night.

Study Type

Observational

Enrollment

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

United States
- Texas
  - Galveston, Texas, United States, 77550
    - Transitional Learning Community
  - Galveston, Texas, United States, 77555-0209
    - University of Texas Medical Branch

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

Ages Eligible for Study

20 years to 35 years (ADULT)

Accepts Healthy Volunteers

Genders Eligible for Study

All

Description

PROTOCOL ENTRY CRITERIA:

--Disease Characteristics--

Patients who have sustained head injury

Closed head injury from trauma OR

Vascular accidents like strokes and hemorrhages

--Prior/Concurrent Therapy--

Endocrine therapy: No concurrent cortisol replacement

Other: No blood donation during and for 1 month after study

--Patient Characteristics--

Hematopoietic: Hemoglobin normal

Other:

No hypopituitarism
No body mass index of 28 or greater
Not pregnant or nursing
Must have normal menstrual cycles
No severe mental impairment
Must not require legal guardian

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?

Collaborators and Investigators

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

Sponsor

National Center for Research Resources (NCRR)

Collaborators

University of Texas

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

February 1, 1998

Study Registration Dates

First Submitted

September 11, 2000

First Submitted That Met QC Criteria

September 11, 2000

First Posted (ESTIMATE)

September 12, 2000

Study Record Updates

Last Update Posted (ESTIMATE)

June 24, 2005

Last Update Submitted That Met QC Criteria

June 23, 2005

Last Verified

December 1, 2003

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

199/15376
UTMB-98-018
UTMB-GCRC-486

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.