Study of the Approximate Entropy of Adrenocorticotropic Hormone and Cortisol Secretion in Patients With Head Injury
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 Design:||Primary Purpose: Screening|
|Study Start Date:||February 1998|
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.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00006270
|United States, Texas|
|Transitional Learning Community|
|Galveston, Texas, United States, 77550|
|University of Texas Medical Branch|
|Galveston, Texas, United States, 77555-0209|
|Study Chair:||Randall Urban||University of Texas|