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Thyroid Hormones in Critically Ill Children (Thyroid)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00664079
Recruitment Status : Terminated (Sluggish enrollment.)
First Posted : April 22, 2008
Last Update Posted : March 12, 2015
Information provided by (Responsible Party):
Children's Hospital of Philadelphia

Brief Summary:
Thyroid hormones are substances naturally made by the body and are important to many of your body's basic functions such as breathing and brain function. We are investigating whether or not these hormones are at lower levels in critically ill children which could lead to further health problems. We hope to get a better understanding of hormone levels and their effects on critically ill children to better help other children in the future.

Condition or disease Intervention/treatment
Hypotension Respiratory Failure Other: Blood draws

Detailed Description:
We hypothesize that critically ill children that require vasoactive infusions and/or invasive mechanical ventilation have thyroid hormone alterations. We will measure TSH, tT3, fT3, rT3, tT4, fT4, adn tyrosine concentrations in critically ill children with hypotension and/or respiratory failure and correlate thyroid hormone alterations to severity of illness, intensity of therapeutic interventions, and associated morbidity and mortality by using clinical outcomes parameters.

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Study Type : Observational
Actual Enrollment : 22 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Thyroid Hormone Deficiency in Critically Ill Children
Study Start Date : October 2005
Actual Primary Completion Date : June 2008
Actual Study Completion Date : December 2008

Resource links provided by the National Library of Medicine

Drug Information available for: Thyroid

Group/Cohort Intervention/treatment
Patients who are receiving vasoactive medications and/or are mechanically ventilated.
Other: Blood draws
17 mls of blood will be drawn over a 5 day period from either a central venous catheter/arterial line or with scheduled phlebotomy. The following labs will be run tT3, fT3, rT#, tT4, fT4, TSH, and tyrosine.
Other Names:
  • Critically Ill Children
  • Vasoactive Infusions in Children
  • Mechanical Venilation in Children
  • Thyroid Deficiency

Primary Outcome Measures :
  1. Certain critically ill children requiring vasoactive infusions and/or mechanical ventilation have low concentrations of tT3, fT3, tT4, fT4, elevated rT3, adn inappropriate low/normal TSH. [ Time Frame: When patient has completed the study. ]

Secondary Outcome Measures :
  1. Critically ill children with more severe thyroid hormone deficiencies will have greater severity of illness, intensity of therapeutic intervention, organ dysfunction, and increased morbidity and mortality. [ Time Frame: When study is completed. ]
  2. Critically ill children requiring vasoactive infusions and/or mechanical ventilation are a population in the ICU that has thyroid hormone pertubation and significant morbidity and mortality. [ Time Frame: At completion of study ]

Biospecimen Retention:   Samples Without DNA
Whole blood and serum

Information from the National Library of Medicine

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Ages Eligible for Study:   12 Months to 18 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients who are admitted to the Pediatric Intensive Care Unit at the Children's Hospital of Philadelphia will be approached if they meet inclusion criteria.

Inclusion Criteria:

  • Informed Consent
  • Age of less than 12 months and less than or equal to 18
  • Patient must weigh greater than 10 kgs.
  • Patients must require vasoactive infusions and/or mechanical ventilation.
  • Patients must be enrolled within 24 hours of meeting eligibility.

Exclusion Criteria:

  • Patient with known or presumed pre-existing thyroid disease will be excluded
  • Patients who receive thyroid supplementation will be excluded
  • Patients with known or presumed hypothalamic and/or pituitary dysfunction that have thyroid hormone concentration abnormalities not related to an acute illness.
  • Patients who are intubated for airway protection only.
  • Patients intubated for neuromuscular disease
  • Pregnant patients.
  • Patients receiving amiodarone supplementation
  • Patients who received blood product transfusions equaling more than 1/2 of their blood volume.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00664079

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United States, Pennsylvania
The Children's Hospital of Philadelphia
Philadelphia,, Pennsylvania, United States, 19104
Sponsors and Collaborators
Children's Hospital of Philadelphia
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Principal Investigator: Athena Zuppa, MD, MSCE Children's Hospital of Philadelphia
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Responsible Party: Children's Hospital of Philadelphia Identifier: NCT00664079    
Other Study ID Numbers: 2005-10-4547
First Posted: April 22, 2008    Key Record Dates
Last Update Posted: March 12, 2015
Last Verified: July 2008
Keywords provided by Children's Hospital of Philadelphia:
Thyroid Deficiency
Thyroid Stimulating Hormone
Additional relevant MeSH terms:
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Respiratory Insufficiency
Respiration Disorders
Respiratory Tract Diseases
Vascular Diseases
Cardiovascular Diseases