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Home > "T" Clinical Trials Conditions > Temperature Response to a Head-Neck Cooling System  Temperature Response to a Head-Neck Cooling System
Temperature Response to a Head-Neck Cooling System
For Condition: Healthy
Status: Completed
Sponsor(s): National Institute of Neurological Disorders and Stroke (NINDS) ,
Synopsis: This study will evaluate the effectiveness of a specially designed head-neck cooling system for way lowering the body's central, or core, temperature and cooling the brain. Brain cooling has an effect on stopping seizure discharges in the brain as well as the seizures themselves. If this system works to cool the brain, a similar study may be tried in patients with epilepsy. Normal volunteers 21 years of age and older who have no medical or neurological condition and do not use any medications may be eligible for this study. Candidates will be screened with an interview. Women will have a pregnancy test. Those enrolled will be hospitalized twice for overnight stays, with the admissions 2 to 3 days apart. Participants will have a medical history, physical and neurological examinations, electroencephalogram (EEG) and electrocardiogram (EKG). Then, electrodes will be attached to their scalp, forearm and calf to measure temperatures in those locations. Intestinal (core) temperature will be measured with a temperature-sensing pill, which will be swallowed earlier), and a hand-held infrared thermometer will be used to measure temperatures from the ear canal, face, head, arms legs, and abdomen. Electrodes on the scalp will also measure changes in blood volume in the brain for a study of brain blood flow. Subjects will be seated in a comfortable chair and fitted with the cooling system, a portable unit with a circulating coolant. Cooling will last 30 minutes for the first session and 60 minutes for the second. Participants will be monitored for at least 30 minutes after each session to track temperature changes and have a post-cooling EEG recording.
Details: The aim of this protocol is to study thermal responses in normal volunteers using a special cooling system designed to cool the head and neck. Temperature will be monitored at various locations including the scalp, face, mouth, ears (tympanic), arms, legs, and rectum. Previous studies indicate that cooling of the brain can be achieved with the head-neck cooling method. We hope to derive cooling parameters that will be used in a future study involving patients with epilepsy.
Eligibility:
Study Type: Interventional, Treatment, Safety
Minimum Age/Maximum Age: /
Genders: Both
Protocol Entry Criteria: INCLUSION CRITERIA: 21 years and older No neurological or medical condition No use medication of any kind, including prescription, over-the-counter or herbal medicines. No history of any kind of gastrointestinal tract disorders EXCLUSION CRITERIA: Women who are pregnant (screened with urine pregnancy test) Those with progressive neurological disorders Those sensitive to coldness Those taking medication Those who smoke Those whose heart rate less than 50 or more than 100 Those who are less than 80 pounds or excessively overweight Those who have a history of gastrointestinal disorders (i.e. diverticulitis and other inflammatory bowel diseases) Those who have difficulty swallowing or whose gag reflex is impaired
Total Enrollment: 10
Location and Contact Information:
National Institute of Neurological Disorders and Stroke (NINDS)
Bethesda, Maryland, 20892
United States
Additional Information:
Study ID Numbers: 020025; 02-N-0025
Study Start Date: November 1, 2001
Record last reviewed: April 18, 2003
Additional information available at: clinicaltrials.gov
Clinicaltrials.gov Reference link: NCT00025987
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Temperature Response to a Head-Neck Cooling System
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