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Measurement of Body Composition by Air Displacement Plethysmography in Pediatric Intestinal Failure Patients

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: NCT02561819
Recruitment Status : Completed
First Posted : September 28, 2015
Last Update Posted : December 16, 2019
Information provided by (Responsible Party):
Christopher Duggan, Boston Children's Hospital

Brief Summary:
This study will determine if air-displacement plethysmography (ADP) provides accurate measurement of body composition (percent body fat and fat-free mass) in pediatric patients with intestinal failure, as compared to body composition measured by alternative standard methods, including deuterium dilution, bioimpedance analysis (BIA), dual x-ray absorptiometry (DXA) when clinically indicated, and routine anthropometric measurements.

Condition or disease
Short Bowel Syndrome

Detailed Description:

Infants and children with intestinal failure (IF) require prolonged periods of parenteral nutrition (PN) for sustenance and growth until intestinal adaptation allows adequate enteral intake. Lean body mass (or muscle mass) preservation and accrual is an important goal during this phase of nutritional rehabilitation. However, lean body mass is not accurately measured by currently available anthropometric techniques. Thus, despite weight gain, muscle mass depletion can remain undetected.

Little data exist in the field of measuring body composition in patients with intestinal failure, where changes in body weight are commonly taken to indirectly measure gastrointestinal absorptive function. Body composition analysis is of particular importance in the management of these patients, since it can help guide medical, surgical and/or nutrition interventions, including titration of enteral or parenteral nutrition. To the investigators' knowledge there are no studies examining whether air-displacement plethysmography (ADP) is a valid measure of body composition in patients with intestinal failure.

The investigators propose a non-randomized, prospective cohort study to validate ADP as a measure of body composition in infants and children with IF.

The investigators will apply non-radioactive (stable) isotope techniques to examine the accuracy of ADP in measuring body composition in these children.

The investigators will also compare ADP with bioimpedance analysis and routine anthropometry. Additionally, if subjects have had a recent dual-energy X- ray absorptiometry (DXA) scan, the investigators will compare the ADP estimates of body composition to those obtained from DXA. The investigators hypothesize that ADP is a feasible and accurate technique for body composition measurements, and that the device can be used to serially measure lean body mass and fat mass changes in this cohort. If the feasibility and accuracy of ADP for body composition analysis can be demonstrated, the technique is likely to have wider applications in other pediatric illnesses.

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Study Type : Observational
Estimated Enrollment : 25 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Measurement of Body Composition by Air Displacement Plethysmography in Pediatric Intestinal Failure Patients
Actual Study Start Date : November 2015
Actual Primary Completion Date : February 2017
Study Completion Date : December 2020

Resource links provided by the National Library of Medicine

Primary Outcome Measures :
  1. Body composition (percent body fat and fat-free mass) as measured by air displacement plethysmography in pediatric patients with intestinal failure on date of visit. [ Time Frame: Single Visit ]
    Body composition (percent body fat and fat-free mass) as measured by air displacement plethysmography in pediatric patients with intestinal failure will be compared to body composition measurements done by the deuterium dilution technique, DXA scan, and bioimpedance analysis.

Biospecimen Retention:   Samples With DNA
Urine samples

Information from the National Library of Medicine

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Ages Eligible for Study:   2 Years to 17 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients with intestinal failure between 2-17 years of age inclusive will be recruited through the Center for Advanced Intestinal Rehabilitation (CAIR) program at Boston Children's Hospital.

Inclusion Criteria:

  • Patients evaluated in the CAIR Program at Boston Children's Hospital will be eligible for participation if they meet the definition of short bowel syndrome and are under 18 years of age. Short bowel syndrome will be defined as a malabsorptive state resulting from congenital or acquired gastrointestinal disease leading to current dependence on parenteral nutrition for greater than or equal to 90 days. If the patient is on intravenous fluids, they must have a stable intravenous fluid regimen for at least 4 weeks prior to the study visit.

Exclusion Criteria:

  • age < 2 years or ≥ 18 years
  • presence of cardiac pacing device (BIA may theoretically interfere with pacer functioning)
  • presence of any other electrical device that might interfere with the BIA such as implantable drug delivery pumps, vagal nerve stimulator and invasive cerebral perfusion monitor
  • subjects will be excluded due to pregnancy
  • subjects with ongoing fluid imbalance, clinically evident shifts in fluid compartments (e.g. edema, ascites) or with fluid resuscitation (defined as daily fluid intake more than 150% of maintenance or fluid boluses more than 20 ml/kg/day). Determination of fluid imbalance will be made by the physicians directly involved in the patient's care.

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): NCT02561819

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United States, Massachusetts
Boston Children's Hospital
Boston, Massachusetts, United States, 02115
Sponsors and Collaborators
Christopher Duggan
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Principal Investigator: Christopher Duggan, MD, MPH Boston Children's Hospital
Principal Investigator: Alexandra Carey, MD Boston Children's Hospital

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Responsible Party: Christopher Duggan, MD, MPH, Boston Children's Hospital Identifier: NCT02561819    
Other Study ID Numbers: IRB-P00014026
First Posted: September 28, 2015    Key Record Dates
Last Update Posted: December 16, 2019
Last Verified: December 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Keywords provided by Christopher Duggan, Boston Children's Hospital:
Short Bowel Syndrome
Congenital Short Bowel Syndrome
Body Composition
Parenteral Nutrition
Intestinal Failure
Additional relevant MeSH terms:
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Short Bowel Syndrome
Pathologic Processes
Malabsorption Syndromes
Intestinal Diseases
Gastrointestinal Diseases
Digestive System Diseases
Postoperative Complications