ADHD Flashcards

1
Q

DSM-5 definition

A

Persistent pattern of inattention or hyperactivity-impulsivity that clearly interferes with or reduces academic, social, or occupational functioning/development

Must occur for >6 months

Symptoms are present before age 12 and must be present in more than one setting

Must have ≥ 6 symptoms of inattention or hyperactivity-impulsivity

Criteria changes to ≥ 5 for inattention if developed after age 17

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2
Q

inattention

A

Fails to focus on details, careless mistakes
Difficulty maintaining attention
Inability to listen when spoken to directly
Inability to follow instruction
Fails to finish schoolwork/other tasks
Trouble organizing schoolwork/other activities
Avoids/dislikes/reluctant to engage in activities requiring continuous attention
Loses items necessary for activities
Easily diverted by external stimuli
Frequently forgets daily activities

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3
Q

Hyperactivity/impulsivity

A

Fidgets with hands or feet; squirms in seat
Inability to remain seated when necessary
Runs/climbs in unacceptable situations
Unable to play or engage in quiet, leisure activities
Often “on the go” or acts as if “driven by a motor”
Excessively talks
Impulsively blurts out answers
Difficulty waiting their turn
Interrupts activities or conversations of others; intrudes or takes over for them

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4
Q

infancy symptoms

A

Difficulty being soothed; fidgety, crying
Feeding problems; poor sucking, crying during feedings, needing to be fed frequently
Short periods of sleep; little sleep
When crawling, constant motion

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5
Q

School age symptoms

A

Constantly “on the go”; unable to stay seated; explosive and irritable
Not able to play quietly or politely
Easily distracted; doesn’t complete tasks
Impulsive, unable to wait their turn
May appear accident-prone
Disorganized – constantly forgetting

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6
Q

Adolescence symptoms

A

Procrastination
Disorganization
Forgetfulness
Inattention
Over-reactive
Reckless behaviors; risky driving

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7
Q

Hyperactivity in adulthood

A

Inability to sit still through class/work meetings
Excessive talking
Need to get to places quickly

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8
Q

Impulsivity in adulthood

A

Frequent job changes
Low frustration tolerance
Unstable relationships with friends/family

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9
Q

inattentive in adulthood

A

Poor time management/motivation
Forgetfulness
Excessive mistakes
Poor concentration

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10
Q

Neuropsychiatric EEG-based Assessment Aid system

A

Medical device that can assist in ADHD diagnosis between ages 6-17
Test is 15-20 minutes long and measures ratio between theta and beta waves
A higher theta/beta ratio has been found in children and adolescents with ADHD

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11
Q

EEG should be used

A

to rule out absence seizures

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12
Q

Risk factors

A

Family hx of ADHD
Perinatal stress
Very low birth weight
Maternal smoking during pregnancy
TBI
Severe early oxygen deprivation
Adverse parent-child relationships

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13
Q

Heritability

A

4-8 fold increase if 1st degree relative
1/3 of parents with ADHD will have a child with ADHD
Twin studies: 90% concordance
Siblings of hyperactive children are twice as likely to get dx with ADHD

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14
Q

Dopamine gene polymorphisms

A

DA transporter gene
NE transporter gene

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15
Q

Dopamine Pathophysiology

A

Dysfunction in DAT
Leads to decreased DA

Impairs attention, mood and arousal regulation, and ability to resist distractions

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16
Q

Two most common co morbidities

A

Oppositional defiant disorder

Conduct Disorder

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17
Q

Associated comorbidities

A

Oppositional defiant disorder
Conduct Disorder
Disruptive mood dysregulation disorder
Substance use/misuse is quite common
Psychiatric conditions
Learning disorders
Sleep disorders

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18
Q

First line treatment

A

MPH or AMP
age 4-5 -behavioral therapy

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19
Q

second line treatment

A

Ages 4-5: MPH
Ages 6-18: Atomoxetine, GXR, CLON-XR

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20
Q

Third line treatment

A

Bupropion, TCA, or alpha2-agonist (4th line)

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21
Q

Need for medication can be assessed if

A

symptom free for 1 year

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22
Q

T/F drug holidays should be attempted frequently

A

True

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23
Q

Family-focused non-pharm

A

Parents attend 10-20 sessions (1-2 hours) with occasional booster sessions
Includes behavioral parenting training (strategies to use at home to improve compliance with commands) and behavioral interventions (positive reinforcement, time-out, response cost, token economy)

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24
Q

School focused non-pharm

A

Behavioral classroom management includes tips for teacher to implement in order to improve attention and productivity. May transition to smaller classroom +/- behavior plan

25
Q

Child-focused non-pharm

A

Group or office based weekly interventions to focus on peer interactions and relationships

26
Q

Stimulants -CII

A

Methylphenidate products
Amphetamine products

27
Q

FDA approved non stimulants

A

Atomoxetine
Guanfacine XR
Clonidine XR

28
Q

Not FDA approved

A

Bupropion
SNRIs
TCAs

29
Q

MPH MOA

A

CNS stimulant; selectively inhibits reuptake of DA and NE
Increase release of catecholamines
Specifically blocks DAT/carrier proteins
Inhibits MAO

30
Q

MPH pharmacokinetics

A

Time to peak may be delayed by high-fat breakfast

31
Q

MPH dosing

A

Do not give doses within 6 hours of bedtime; avoids insomnia
May give IR formulations as “breakthrough” or “wear off” dosing along with longer acting formulations

32
Q

Concerta

A

Outer coat = 22% of drug in IR formulation
Semipermeable membrane absorbs water
As water is absorbed, the push compartment expands
Low concentration drug is expelled
Mid-day high concentration drug is expelled

33
Q

Aptensio XR

A

IR (40%) and ER (60%) components

34
Q

Two peaks in surge levels

A

Metadate, Ritalin, Concerta, Focalin

35
Q

Quilivant caveats

A

Contains benzoic acid which is a metabolite of benzyl alcohol; potential for allergic rxn

36
Q

concerta caveat

A

most likely will find capsule in stool

37
Q

Daytrana caveat

A

Apply to hip, leave on for 9 hours
patch has higher bioavailability (lower first pass)

38
Q

AMP MOA

A

Stimulates release of DA and NE
Blocks DA and NE reuptake

39
Q

AMP Pharmacokinetics

A

Time to peak may be delayed by high-fat breakfast
Hepatic metabolism via CYP2D6 to two active metabolites
Lisdexamfetamine is prodrug; converted to dextroamphetamine

40
Q

AMP dosing

A

Do not give doses within 6 hours of bedtime; avoids insomnia
May give IR formulations as “breakthrough” or “wear off” dosing along with longer acting formulations

41
Q

CI for all stimulants

A

Cardiovascular instability
Hyperthyroidism
Glaucoma
Agitated states
History of drug abuse
Within 14 days of MAO-I

42
Q

Box warning for all stimulants

A

Potential for abuse
Can cause sudden cardiac death in those with pre-existing conditions

43
Q

Precautions all stimulants

A

HTN/tachycardia [modest increase of 2-4mmHg and 3-6bpm]
Psychiatric ADE; exacerbation of psychosis, induction of mania/hypomania
Long-term growth suppression – controversial [some indicate up to 1cm/year with continuous tx]
Seizures; stimulants lower seizure threshold
Visual disturbances such as blurred vision
Tics both motor and phonic

44
Q

Stimulant class-wide side effects

A

Appetite suppression
Insomnia
GI distress
Irritability
Headache

45
Q

DDI stimulants

A

Psychostimulants
Antihypertensives
MAOi
TCA
Antacids
opioids

46
Q

Class-wide stimulants monitoring

A

At baseline and with each follow-up
Appetite, BP, HR, weight

Baseline & annual (children)
Height

47
Q

Atomoxetine MOA

A

inhibits reuptake of NE

48
Q

Atomoxetine PK/PGx

A

CYP2D6 poor metabolizers experience and increase in half-life from the normal 5 hours to 24 hours

Active metabolites have a half-life of 6-8 hours and can increase to 34-40 hours

49
Q

Atomoxetine CI

A

Within 14 days of MAO-I, glaucoma, pheochromocytoma, CV disease

50
Q

Atomoxetine warnings

A

BW for increased suicidality; bolded warning for potential liver injury

51
Q

Atomoxetine AE

A

GI discomfort, HA, insomnia, irritability, loss of appetite, nausea, small increase in BP

52
Q

Atomoxetine DDI

A

CYP2D6 inhibitors increase atomoxetine, empiric dose decrease warranted

53
Q

Clonidine XR (Kapvay) and Guanfacine XR (Intuniv) MOA

A

postsynaptic alpha2 receptor agonist in the prefrontal cortex (PFC)
This increases noradrenergic tone and promotes NE firing from locus ceruleus

54
Q

Clonidine XR (Kapvay) and Guanfacine XR (Intuniv) warnings

A

hypotension, bradycardia, heart block, syncope, combination with other CNS depressants or medications that lower HR

55
Q

Clonidine XR (Kapvay) and Guanfacine XR (Intuniv) ADEs

A

Can occur with first dose
Sedation, hypotension, dizziness (tolerability develops)

56
Q

Clonidine XR (Kapvay) and Guanfacine XR (Intuniv) DDIs

A

Mirtazapine –> Inhibits alpha2 antihypertensive effects
CYP3A4 inhibitors –> Empiric guanfacine dose reduction required

57
Q

Pregnancy

A

Stimulants should be avoided during pregnancy

58
Q

Lactation

A

refrain from breastfeeding