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AnxietyNCT00101777

Ventilatory Physiology in Children at Risk for Anxiety

An observational study of Anxiety and Panic Disorder, run by National Institute of Mental Health (NIMH) at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The importance of the proposed research project derives from a steady accumulation of research findings on the relationship between respiration and anxiety. The relationship between panic disorder and abnormalities in respiration has been recognized for more than 10 years. Read more about this study

Who is it for?
Any ageHealthy volunteers can take part
Conditions the study is for
Anxiety, Panic Disorder
How many people
479 participants
Where
1 siteUnited States
Study dates
Dec 2001to Nov 2005
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Any age
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult, Older adult

Who may be able to join

  • Ages greater than or equal to 9 years 0 months.
  • Parent able to give written informed consent.
  • Offspring ages 12 years 0 months to 17 years 11 months able to give written assent.
  • Offspring ages 9 years 0 months to 11 years 11 months able to give verbal assent.
  • Offspring ages 18 years 0 months.
  • Absence of medical condition that will interfere with CO(2) procedure.
Show all 11Show fewer
  • Has met DSM-IV criteria for one or more of the following disorders:
  • Panic Disorder
  • Social Phobia
  • Major Depressive Disorder
  • OR No Disorder.

Who cannot join

  • Clinically significant or unstable medical disorders; cardiovascular, hepatic, renal, gastrointestinal, pulmonary, metabolic, endocrine, hematological or other systemic disease.
  • History of mania, schizophrenia or other psychosis, or current serious suicidal ideation.
  • Females who are pregnant.
  • Children currently on medications that affect breathing.
  • IQ less than 70.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • National Institute of Mental Health (NIMH)

    Bethesda, Maryland, 20892

Other trials in United States

About this study

The importance of the proposed research project derives from a steady accumulation of research findings on the relationship between respiration and anxiety. The relationship between panic disorder and abnormalities in respiration has been recognized for more than 10 years. Increased sensitivity to CO2 exposure in panic disorder represents the most consistent finding supporting this relationship. The current proposal follows naturally from three sets of recent research findings in the area of panic disorder. First, our group has recently shown that children with anxiety disorders, like adults with panic disorder, exhibit increased sensitivity to CO2. Second, other researchers have shown that psychiatrically healthy relatives of patients with panic disorder also exhibit increased sensitvity to CO2. Finally, our group has also recently shown that children of adults with panic disorder exhibit high rates of anxiety disorders, particularly separation anxiety disorder, the childhood anxiety disorder which exhibits the highest degree of CO2 sensitivity. These three findings suggest that children of parents with panic disorder may exhibit a latent vulnerability to panic disorder, manifested as increased sensitivity to CO2.

A secondary feature of the proposed research project derives from a steady accumulation of research findings in basic science literature outlining the parts of the brain that mediate fear and anxiety in animals. It may be possible to use insights from research on the brain basis of fear in animals to develop methods for assessing the brain basis of fear in humans. Moreover, work in animals notes changes in brain systems that mediate fear and anxiety across development. If development. If developmentally sensitive methods could be used to study fear in children, it may also be possible to greatly enhance our understanding of the manner in which the relationship between brain function and fear changes as children age. If similarities could be demonstrated across animals and humans in these areas, new insights on potential treatments for anxiety could be more readily transferred from the laboratory to the clinic. A second goal of the current proposal is to refine two neuropsychological probes that are thought to assess functional aspects of brain systems implicated in fear and anxiety across various species, from rodents to humans.

Read the detailed description

The importance of the proposed research project derives from a steady accumulation of research findings on the relationship between respiration and anxiety. The relationship between panic disorder and abnormalities in respiration has been recognized for more than 10 years. Increased sensitivity to CO2 exposure in panic disorder represents the most consistent finding supporting this relationship. The current proposal follows naturally from three sets of recent research findings in the area of panic disorder. First, our group has recently shown that children with anxiety disorders, like adults with panic disorder, exhibit increased sensitivity to CO2. Second, other researchers have shown that psychiatrically healthy relatives of patients with panic disorder also exhibit increased sensitvity to CO2. Finally, our group has also recently shown that children of adults with panic disorder exhibit high rates of anxiety disorders, particularly separation anxiety disorder, the childhood anxiety disorder which exhibits the highest degree of CO2 sensitivity. These three findings suggest that children of parents with panic disorder may exhibit a latent vulnerability to panic disorder, manifested as increased sensitivity to CO2.

A secondary feature of the proposed research project derives from a steady accumulation of research findings in basic science literature outlining the parts of the brain that mediate fear and anxiety in animals. It may be possible to use insights from research on the brain basis of fear in animals to develop methods for assessing the brain basis of fear in humans. Moreover, work in animals notes changes in brain systems that mediate fear and anxiety across development. If developmentally sensitive methods could be used to study fear in children, it may also be possible to greatly enhance our understanding of the manner in which the relationship between brain function and fear changes as children age. If similarities could be demonstrated across animals and humans in these areas, new insights on potential treatments for anxiety could be more readily transferred from the laboratory to the clinic. A second goal of the current proposal is to refine two neuropsychological probes that are thought to assess functional aspects of brain systems implicated in fear and anxiety across various species, from rodents to humans.

Keywords
Anxiety, Ventilation, Panic Disorder, Children, Healthy Volunteer, HV, Normal Control
Medical subject headings
Anxiety Disorders, Panic Disorder, Respiratory Aspiration

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted13 Jan 2005 (estimated)
  2. Study startDec 2001
  3. Study completionNov 2005

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Enrolment
479 participants
IDs, dates and publications
ClinicalTrials.gov ID
NCT00101777
Sponsor's protocol ID
020093
Other IDs
02-M-0093
Status last verified
Nov 2005
First submitted
12 Jan 2005
Last updated
4 Mar 2008
Results posted
No

Publications

  • Papp LA, Klein DF, Martinez J, Schneier F, Cole R, Liebowitz MR, Hollander E, Fyer AJ, Jordan F, Gorman JM. Diagnostic and substance specificity of carbon-dioxide-induced panic. Am J Psychiatry. 1993 Feb;150(2):250-7. doi: 10.1176/ajp.150.2.250.

    PubMed 8123056
  • Papp LA, Martinez JM, Klein DF, Coplan JD, Norman RG, Cole R, de Jesus MJ, Ross D, Goetz R, Gorman JM. Respiratory psychophysiology of panic disorder: three respiratory challenges in 98 subjects. Am J Psychiatry. 1997 Nov;154(11):1557-65. doi: 10.1176/ajp.154.11.1557.

    PubMed 9356564
  • Perna G, Gabriele A, Caldirola D, Bellodi L. Hypersensitivity to inhalation of carbon dioxide and panic attacks. Psychiatry Res. 1995 Aug 28;57(3):267-73. doi: 10.1016/0165-1781(95)02723-a.

    PubMed 7501737

Questions about this trial

What is this clinical trial studying?

An observational study of Anxiety and Panic Disorder, run by National Institute of Mental Health (NIMH) at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 11 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 4 Mar 2008. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00101777, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Mar 2008.

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