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Active clinical trials for "Attention Deficit Disorder with Hyperactivity"

Results 821-830 of 1184

The Effects of Vyvanse(TM) on Brain Hemodynamics and Reading

Attention Deficit/Hyperactivity Disorder

This is a single-blind, Investigator Initiated study to evaluate the safety and efficacy of Vyvanse™ and provide pilot data in two areas: (1) on the use of Near-Infrared Spectroscopy to detect medication effects in children with ADHD; and (2) on the influence of Vyvanse ™ on reading fluency and comprehension, over a period of approximately 6-8 weeks. Subjects will be between the ages of 6 and 12 at the beginning of the study.

Completed21 enrollment criteria

The Reinforcing Mechanisms of Smoking in Adult ADHD

ADHD

Whereas the smoking prevalence rates in the general population are declining, rates among people diagnosed with attention-deficit hyperactivity disorder (ADHD) continue to be elevated. Smoking may be a form of self-medication in people with ADHD, which has specific reinforcing mechanisms such as improvement of ADHD core symptoms, enhancement of moods and arousal, or a combination of both. In addition, the reinforcing effects of smoking may be potentiated by stimulant medication. The study examined the reinforcing effects of ad libitum smoking with and without ADHD medication in adult smokers with clinically diagnosed ADHD. Participants were adults with ADHD. The effects of two day of ADHD medication compared to two days on placebo for were studied on nicotine intake (i.e., cotinine levels). In addition, task performance on the Continuous Performance Task and nicotine withdrawal symptoms were examined in response to ADHD medication + smoking a cigarette versus ADHD medication + abstinence versus placebo medication + smoking versus placebo medication + abstinence. The study identified the reinforcing mechanisms of smoking in interaction with ADHD medication. The findings will contribute to a better understanding of nicotine addiction and facilitate the development of targeted smoking cessation and prevention programs for individuals with ADHD and other people with deficiencies in impulse control and excessive risk taking.

Completed9 enrollment criteria

Effects of Subconcussive Head Impacts on Neural Integrity and Function in ADHD

Sport InjuryAttention-deficit/Hyperactivity Disorder

The purpose of this study is to examine the acute neural responses to subconcussive head impacts in individuals with Attention-deficit/hyperactivity disorder (ADHD). The study is designed to identify the effects of 10 controlled soccer headings in college-aged soccer players diagnosed with ADHD and without ADHD, through the use of neural-injury blood biomarkers, functional and diffusion MRI, and ocular-motor function across three acute timepoints. The central hypothesis is that neuronal structural, physiological, and functional impairments from subconcussive head impacts will be amplified by ADHD. The neural-injury blood biomarkers neurofilament light (NF-L), glial fibrillary acidic protein (GFAP), ubiquitin C-terminal hydrolase-L1 (UCHL-1), and Tau will be measured in plasma, with the hypothesis that 10 soccer headings will significantly increase plasma NF-L levels in both groups at 24h post-heading compared to baseline, but this increase will be higher in the ADHD group; plasma UCH-L1, GFAP, and Tau levels will increase significantly after 10 headings in the ADHD group at 2h and 24h post-heading, but levels in the non-ADHD group will remain consistent throughout the time points. It is also hypothesized that repetitive subconcussive head impacts will impair neurocognitive function, as measured by regional changes in fMRI activation during working memory and attention-based tasks, in the ADHD group. Ten headings will significantly alter fMRI activation in the ADHD group from baseline. This impairment will not be observed in the non-ADHD group, rather the non-ADHD group will show consistent fMRI activation even after 10 headings. White matter microstructure will be measured by diffusion imaging metrics, with the hypothesis that 10 soccer headings will significantly disrupt microstructure in the ADHD group compared to baseline, but not in the non-ADHD group. The study will also assess neuro-ophthalmologic function as measured by the King-Devick test (KDT) and oculomotor function as measured by the near-point-of-convergence (NPC) in response to subconcussive head impacts. The hypothesis is that NPC performance will be significantly impaired and persist for longer than 24 hours in both groups, but this impairment will be greater in the ADHD group, and that the learning curve and expected improvement of KDT will be significantly blunted in both groups, with a display of worsening in the ADHD group.

Completed15 enrollment criteria

Feasibility and Acceptability of Powdered Multinutrient Formula

Attention Deficit Hyperactivity Disorder

The study aims to test the feasibility and acceptability of 1) consumption of EMPowerplus Lightning Sticks, 2) at-home collection of blood and urine samples, and 3) remote visits and completion of online behavioral questionnaires.

Completed14 enrollment criteria

Neurocognitive and Neurobiological Improvement in ADHD Children With High Protein Diet

ADDADHD

Multicenter, Prospective, randomized, comparative and controlled study about the beneficial effects in behavior and brain connectivity of different dietary patterns in 100 children with ADHD between 7 and 12 years, followed up for 3 months of nutritional therapy.

Completed15 enrollment criteria

Using Computers to Assist in the Diagnosis and Treatment of Attention-deficit/Hyperactivity Disorder...

Attention Deficit Hyperactivity Disorder

Attention-deficit/hyperactivity disorder (ADHD) is the most commonly diagnosed behavioral disorder in children. Prevalence rates in the United States range from 2% to 18% depending on diagnostic criteria and population studied. Primary care physicians, especially pediatricians, have historically played a large role in the diagnosis and treatment of ADHD. Despite the existence of authoritative guidelines to assist primary care physicians, ample evidence demonstrates that they continue to diagnose and treat this disorder suboptimally. This is due, in part, to a lack of training and cumbersome delivery system designs. Modern computer decision support strategies offer the best hope of equipping general practitioners to deal with the mental health epidemic of ADHD. The investigators have developed a novel decision support system for implementing clinical guidelines in pediatric practice. CHICA (Child Health Improvement through Computer Automation) combines three elements: (1) pediatric guidelines encoded in Arden Syntax; (2) a dynamic, scannable paper user interface; and (3) an HL7-compliant interface to existing electronic medical record systems. The result is a system that both delivers "just-in-time" patient-relevant guidelines to physicians during the clinical encounter, and accurately captures structured data from all who interact with it. Preliminary work with CHICA has demonstrated the feasibility of using the system to implement and evaluate clinical guidelines. The investigators propose to expand CHICA to include ADHD diagnosis and treatment guidelines. The investigators hypothesize that implementation of the ADHD guidelines will result in better outcomes, including higher rates of adherence to recommendations and improved patient functioning.

Completed2 enrollment criteria

New Technologies to Help Manage ADHD

Attention Deficit Hyperactivity Disorder

Cluster randomized controlled trial to evaluate the general effectiveness of intervention compared to control on medication continuity as measured by prescriptions written and other more proximal outcomes during the first six months of treatment.

Completed7 enrollment criteria

Non Invasive Brain Stimulation Effects on Attentional Performance in ADHD Adults

Attention Deficit/Hyperactivity Disorder

This study aims to evaluate the effect of noninvasive brain stimulation in adults with ADHD symptomatology compared them with healthy adults. For this, volunteers will allocate into two groups (experimental and control), will pass through session two types of transcranial stimulation: Repetitive Transcranial MagneticsStimulation (rTMS) and transcranial direct current stimulation (tDCS); considering two session types (real and sham). Attentional assessment will be carried out through specific neurocognitive tests applied before and after each session of stimulation

Completed10 enrollment criteria

Neurobiological Basis of Response to Vyvanse in Adults With ADHD: an fMRI Study of Brain Activation...

ADHD

The purpose of this study is to determine the effects of Vyvanse, an FDA approved medication used in the treatment of Attention Deficit Hyperactivity Disorder (ADHD), on brain activity in adults with attention-deficit hyperactivity disorder (ADHD). Participants may qualify for participation in this study because they have ADHD and are willing to participate in two Functional Magnetic Resonance Imaging (fMRI) scans and receive Vyvanse for treatment of their symptoms. Another purpose of this study is to collect and bank samples of blood for research to examine how genes influence brain activation seen during the brain scans. The study also seeks to find out whether certain genes are related to ADHD. Participants' entire genetic makeup will not be determined from this sample.

Completed16 enrollment criteria

Cardiovascular Study of Lisdexamfetamine in Healthy and Hypertensive Attention Deficit Hyperactivity...

Attention Deficit Hyperactivity Disorder (ADHD)

The purpose of this research study is to learn about the effects of a medication called Vyvanse on the heart (cardiovascular system). The U.S. Food and Drug Administration (FDA) has approved Vyvanse for the treatment of Attention Deficit Hyperactivity Disorder (ADHD). People who have ADHD have trouble paying attention, organizing, and planning; these symptoms can cause problems at work, socially and at home. Vyvanse (also known as Lisdexamfetamine) is a stimulant class medication. There have been reports of serious cardiovascular effects in children and adults treated with stimulants. While there is no definite evidence that these events were related to the use of stimulants, the deaths have raised questions about the cardiovascular safety of stimulants. The study will involve in-depth cardiovascular tests, namely echocardiograph (ultrasound of the heart) and cardiopulmonary exercise test (also called stress test; subjects exercise on a bicycle while measuring their heart activity and breathing is monitored by cardiologists). The investigators predict to see changes in blood pressure and heart rate as shown in previous clinical studies, and that the in-depth cardiovascular tests will provide new insights into the cardiovascular impact of stimulants.

Completed16 enrollment criteria
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