ADHD Clinical Trial - Vascular Effects of Attention Deficit Hyperactivity

Status Completed

Clinical Trial Summary

4.4 million children and adolescents in the United States have been diagnosed with attention deficit hyperactivity disorder (ADHD) and more than half are treated with medication. Most ADHD medications are stimulants, which activate the sympathetic nervous system (SNS). SNS activation is closely associated with vascular functional and mechanical abnormalities. Therefore, ADHD medications, via instigating SNS activation and altering the hemodynamic profile, may have untoward effects on the vasculature and increase risk of developing cardiovascular disease in children and adolescents who use them.

Our overall objective in this study is to determine whether ADHD medication use is associated SNS activation, endothelial dysfunction, and arterial stiffness in children and adolescents. We will address this objective by conducting a case-control study and obtain non-invasive measures of SNS activation, endothelial function, and arterial stiffness in children and adolescents (8-17 years old) with (using stimulant medication) and without ADHD.

Clinical Trial Description

SPECIFIC AIMS AND HYPOTHESES

Our overall objective in this study is to determine whether ADHD medication use is associated SNS activation, endothelial dysfunction, and arterial stiffness in children and adolescents.

Our hypothesis is:

Children and adolescents taking ADHD medications will have higher SNS activation, lower digital reactive hyperemia, and higher pulse wave velocity and aortic augmentation index compared to sibling controls without ADHD.

Study Design We will obtain non-invasive measures of SNS activation (heart rate variability), endothelial function (digital reactive hyperemia and brachial artery flow-mediated dilation), and arterial stiffness (carotid-radial pulse wave velocity; aortic augmentation index) in youth taking ADHD stimulant medication and in their healthy siblings without ADHD.

Study visits will be conducted at the Clinical and Translational Science Institute (CTSI) at the University of Minnesota. All vascular testing will occur in the Vascular Biology Laboratory within the CTSI. ;

Study Design

Observational Model: Case Control, Time Perspective: Cross-Sectional

Related Conditions & MeSH terms

ADHD
Attention Deficit Disorder with Hyperactivity

Clinical Trial Details

NCT number	NCT01107301
Study type	Observational
Source	University of Minnesota - Clinical and Translational Science Institute
Contact
Status	Completed
Phase	N/A
Start date	January 2010
Completion date	July 2013

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Vascular Effects of Attention Deficit Hyperactivity Disorder (ADHD) Medications in Youth

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms