Treatment of ADHD Flashcards
stats on increase of ADHD
Over the last two decades, Attention Deficit Hyperactivity Disorder has taken the title of being the most commonly diagnosed disorder in school-aged children. During the 1990’s, the rate of kids seeing physicians for stimulant pharmacotherapy for ADHD increased fivefold (Mayes et al., 2008).
why is it important to treat ADHD early and accurately
age 3, severity of ADHD is the most significant indicator of chronicity of the disorder into middle childhood (Sonuga-Barke, et al., 2006).
Research on older children suggests that early onset may be associated with poorer outcome, e.g., greater cognitive and language deficits, higher rates of psychiatric comorbidity and greater social and academic impairments (Taylor, 1999).
Thus, it is important to accurately detect and treat ADHD in this population in order to minimise the impact of the disorder on the child’s life,
state the different methods for treating ADHD
Pharmacotherapy;
stimulant and non stimulant
non-pharmalogical
parent training
CBT
SST
general info on stimulants
Stimulants commonly used and often considered most effective at reducing core symptoms
why do stimulants work
Stimulant medications increase dopamine and norepinepherine neurotransmitters in the brain and also increase blood flow to the brain. ADHD children feel the need to self-stimulate however stimulants reduce this need.
name two types of stimulant and their shelf names
Amphetamine- Adderal
Methylphenidate e.g. Ritalin
support for Amphetamine
Gillberg et al., 1997- Support- Amphetamine- Adderal was clearly superior to placebo in reducing inattention, hyperactivity, and other disruptive behavior problems and tended to lead to improved results on the Wechsler Intelligence Scale for Children—Revised
support for methlyphenidate
Prins et al., 2007- Both methylphenidate and psychosocial treatments are effective in reducing ADHD symptoms. However, psychosocial treatment yields smaller effects than both other treatment conditions.
support for overall stimulants
Meta-analysis by Jadad et al., 1999- Six studies compared drugs with nondrug interventions and showed consistently that stimulants, particularly MPH, may be more effective than nonpharmacological interventions.
what are issues with stimulants
heart problems
abuse
support for heart problems and stimulants
Mick et al., 2013- found that subjects randomized to CNS stimulant treatment demonstrated a statistically significant increased resting heart rate [+5.7 bpm (3.6, 7.8), p<0.001] and systolic blood pressure findings [+2.0 mmHg (0.8, 3.2), p=0.005] compared with subjects randomized to placebo
support for abuse in stimulants
Faraone et al., 2007- 2 in 10 youths with ADHD misuse their medication.
Thomas et al., 2011 studied abuse in college students- The most frequently endorsed misuse items were used too much(36%), self-reported misuse (19%), and intentionally used with alcohol or other drugs (19%).
Misusers of prescribed stimulant medication were more likely to report cigarette smoking,binge drinking, illicit use of cocaine, and screen positive on the Drug Abuse Screening test (
Conclusion: There is a strong relationship between misuse of prescribed stimulants for ADHD and substance use behaviors, as well as other deleterious behaviors such as diversion. These findings suggest the need for close screening, assessment, and therapeutic monitoring of medication use in the college population.
general issues with stimulants
Side effects wide array: insomnia, mood disturbances, headaches, loss of appetite, lethargy (Roberts et al., 2009)
why use non stimulants?
Why use? Despite the well-established efficacy and safety of stimulants for ADHD2, alternative medications are still needed for several reasons. About 10–30 % of children and adults with ADHD may not respond to stimulants or may be unable to tolerate potential adverse events such as decreased appetite, sleep disturbances, mood lability, and exacerbation of comorbid tic disorders- (Barkley 1977; Barkley et al., 1990
give eg. of non stimulants
tricyclic antidepressants and atomoxetine
what is atomoxetine
s a highly selective inhibitor of the presynaptic noradrenaline transporter.
support for efficacy of atomoxetine
Outcomes on psychosocial measures, including functional and quality-of-life measures, such as the Child Health Questionnaire (CHQ), a parent-rated health outcome scale that measures physical and psychosocial well-being, provide evidence that the improvements in ADHD symptoms associated with atomoxetine are associated with better family and social functioning during acute therapy [Michelson et al., 2001] and long-term (24-month) treatment [Perwien et al., 2003] and, thus, are clinically significant.
saftey pros of atomxetine
The safety and tolerability of atomoxetine have been evaluated in several clinical trials and the available data do not suggest any serious safety concerns. Atomoxetine has generally been well tolerated [Michelson et al., 2001, 2002, 2003]. Overall drug discontinuation rates were low in both groups (atomoxetine, 2.3 %; placebo, 1.2 %).
Cardiovascular effects of atomoxetine (subtle increases in both heart rate and blood pressure) appear not to be clinically significant [Belle et al., 2002].
Hypersensitivity reactions appear to be rare [Belle et al., 2002].
Unlike stimulants, available data on atomoxetine does not show any potential for abuse. The safety profile and/or efficacy of atomoxetine appear to be favourable compared with other non-stimulant medications tried in ADHD
cons of atomoxetine
Like stimulants, atomoxetine may be associated with a brief period of decreased appetite and weight loss upon initiation (14.1 % vs. 5.8 % placebo) [179]. Controlled long-term studies are not yet available to confirm these findings.
Other side effects of atomoxetine include dry mouth, insomnia, constipation, vomiting, dizziness, fatigue, nausea, dyspepsia and mood swings. In addition, urinary retention and sexual dysfunction have been observed in adult patients. Most of these adverse effects diminish over the first months of treatment.
how studies are TCAs
) would rank second in terms of number of controlled studies-
tricyclic antidepressants have the most evidence for the treatment of ADHD in the non-stimulant category.
give e.g. of TCAs
e.g. DESIPRAMINE
support for desipramine
Desipramine significantly superior to placebo in a double-blind, placebo controlled trial. The effect size was found to be similar to stimulants. patients showed a significant reduction in depressive symptoms compared with patients who received placebo- Biederman 1989
Out of 33 studies (21 controlled, 12 open) evaluating in children and adolescents (n=1139), and adults (n=78), 91 percent reported improvement in ADHD symptoms- Spencer et al., 1997
what are health issues of TCAs
TCA overdose is a significant cause of fatal drug poisoning. The severe morbidity and mortality associated with these drugs is well documented due to their cardiovascular and neurological toxicity. Additionally, it is a serious problem in the pediatric population due to their inherent toxicity- Kou et al., 2005
Cause cardiovascular toxicity manifested by ECG abnormalities, arrhythmias and hypotension.- Thomas et al., 2005
issue with efficacy between TCA and stimulants
Furthermore, their efficacy in treating symptoms of ADHD is considered to be lower than that of the psychostimulants (Pliszka, 1987; Biederman et al., 1989; Jadad and Atkins, 1998).