Addictions Flashcards
Substance use disorders criteria?
At least TWO for at least 12 months Categories - Impaired control - Social impairment - Risky use - Pharmacological (tolerance, withdrawal)
Substance use disorders specifiers?
Early remission = 3 - 12 months Sustained remission = > 12 months On maintenance therapy In a controlled environment Severity (based on # of symptoms)
Substance use disorders epidemiology?
Prevalence 17% excluding nicotine
Onset 18-20yo except THC
Heritability 50%
What percentage substance use disorders have ASPD?
35-60%
Which substance does not have intoxication?
Nicotine
Which substance does not have use disorder?
Caffeine
But has intoxication and withdrawal criteria!
Which substances don’t have withdrawal?
PCP, hallucinogens, solvents
Which substances can causes OCD?
Stimulants (in both intoxication and withdrawal)
Prevalence of SUD in other mental disorders
ASPD 84%
BAD 56%
Schizophrenia 47%
MDD 27%
Timing of substance-induced mental disorder?
Within 1 month
Alcohol use disorder types
Type 1 = environmental, >20yo, SSRI can help
Type 2 = genetic, < 20yo, SSRI can worsen
Max alcohol amounts?
Men: 14-15 drinks/week, max 3/day
Women: 9-10 drinks/week, max 2/day
Alcohol units?
13.6g of alcohol
Beer 5% 341ml
Wine 12% 142ml
Liquor 40% 44ml (1.5oz)
Alcohol metabolism?
Zero order kinetics (rate stable regardless of plasma level)
90% small intestine
10% stomach
Mellanby effect: effects are more at same concentration if the concentration is increasing
90% liver (oxidation)
10% excreted piney –> lungs
EtOH –> ADH –> acetaldehyde –> ALDH –> acetyl-coenzyme A
Alcohol metabolism in women?
Less ADH in blood/stomach/esophagus so intoxication is greater with same quantity of alcohol compared to men
Ethanol mechanism?
NMDA antagonist
GABA agonist
Average age of first alcohol intoxication?
15 years old
Most sensitive and specific biological marker of alcohol?
CDT
What is not a biological marker of alcohol?
LDH
Fastest biological marker of alcohol relapse?
GGT
Alcohol use disorder neurobiology?
Intoxication = GABA agonism, NMDA antagonism
Withdrawal = glutamate (unregulated due to inhibition by GABA)
Chronic use =increased sensitivity of NMDA receptors
Alcoholic hallucinosis
Not altered sense of reality
Usually AUDITORY HALLUCINATIONS
Depression, anxiety
DOES NOT CAUSE OBSESSIONS
Wernicke encephalopathy
WACO
- ataxia
- confusion
- ophthalmoplegia (nystagmus, paresis, abnormal pupils, 6th nerve palsy)
80% CONVERT TO KORSAKOFF
GIVE THIAMINE BEFORE GIVING GLUCOSE
100mg IM/IV x 3 days then PO
Death = 15-20% if untreated
40% remit
Korsakoff syndrome
Permanent in > 50%
ANTEROGRADE amnesia CONFABULATION Possible hallucinations Poor recall Disorientation Poor insight
WORKING MEMORY INTACT
Stages of alcohol withdrawal
- Tremors 6-8 hours
- Hallucinations 8-12 hours, VISUAL
- Seizures 12-24 hours tonic clonic, no aura, short post-ictal
- DTs 24-72 hours 20% mortality if untreated, usually 30-40yo with chronic 5-15 year use, DON’T GIVE HALDOL (high risk EPS, seizure, hyperthermia)
Disulfiram
Irriversible inhibition of aldehyde dehydrogynesa
Results in accumulation of acetaldehyde
Need to be 12 hours post-drink, effects can last 1-2 weeks
CAN WORSEN PSYCHOSIS
Don’t use in CAD
Risk of alcohol dependence?
All alcohol users = 5-10%
1 parent = 20% (RR 2-4)
2 parents = 20-50% (RR 2-10)
Father Etoh + criminal = 90% (RR 9-18)
Blood alcohol level
0.1% = mild euphoria
0.2% = decreased psychomotor
0.3% = decreased coordination, incoherent
> 0.3% = stupor, loss of coordination
Alcohol intoxication criteria
Intox = ONLY ONE SYMPTOM
Slurred speech Incoordination Unsteady gait NYSTAGMUS Impaired attention/memory Stupor/coma
Alcohol withdrawal criteria
Withdrawal = AT LEAST 2 SYMPTOMS
Autonomic hyperactivity Hand tremor Insomnia N/V Transient hallucinations Psychomotor agitation Anxiety Generalized tonic-clonic seizures (< 3%)
Specifier = with perceptual disturbances
Topiramate
Nephrolithiasis
Acute myopia due to closed angle glaucoma
Naltrexone
Opioid antagonist Decreases alcohol craving Can't use if liver problem (elevated ALT/AST) Can't use in pregnancy/breastfeeding 50-150mg/day
Works better for type 2 (genetic)
Acamprosate
NMDA glutamate antagonist Can't use in kidney disease Can't use in pregnancy Diarrhea side effect 666mg TID
Works better for type 1 (environmental)
MDMA (ecstasy)
SEROTINERGIC activity (increases release and blocks recapture) Both amphetamine and hallucinogen effects
Cocaine
DOPAMINERGIC activity (blocks dopamine recapture)
Effects on babies in mothers who use are due to INTOX not withdrawal from cocaine
AVOID B-BLOCKERS if intoxicated
Free base = IV
Crack = cocaine + HCL + Sodium bicarb
Cocaine withdrawal stages
- Crash (NO CRAVINGS) hours up to 4 days
- Craving 1-10 weeks
- Extinction (craving if stimulus) after 10 weeks
Don’t need hospitalization
Stimulant intoxication
Intox = at least 2 symptoms
HR changes (up or down) Dilated pupils BP changes (up or down) Perspiration, chills N/V Weight loss Psychomotor retardation or agitation Muscle weakness, chest pain, respiratory depression, cardiac arrhythmia Confusion, seizure, dyskinesia, dystonia, coma
Vigilant watchfulness with suspicion
(persecutory delusions + AH)
Stimulant withdrawal
Withdrawal = DYSPHORIC MOOD + TWO more symptoms
Fatigue VIVID UNPLEASANT DREAMS Insomnia/hypersomnia Increased appetite Psychomotor retardation or agitation
Bradycardia often present and reliable measure of stimulant withdrawal
Cocaine use complications
coronary artery spasm, MI, CVA
IV/smoked most dangerous
Treatment for cocaine?
Abstinence
Topamax, Modafinil, Disulfiram
Phencyclidine (PCP)
NMDA ANTAGONIST (anti-glutamate, pro-dopamine)
When intoxicated, AGGRESSIVE, DECREASED PAIN RESPONSE, sensitive to stimuli
50% psychosis
40% NYSTAGMUS + HYPERTENSION
Use Benzes for agitation not antipsychotics (acetylcholine activity)
PCP intoxication
AT LEAST 2 within 1 hour of use
Vertical or horizontal NYSTAGMUS Hypertension or tachycardia Decreased response to pain Ataxia Dysarthria Muscle rigidity Seizure or coma Hyperacusis
LSD
Partial 5HT2a AGONIST
Other hallucinogen intoxication
(Pro-serotonergic effects)
Intox = AT LEAST 2 SYMPTOMS
Dilated pupiuls Tachycardia Sweating Palpitations BLURRED VISION TREMORS Incoordination
Hallucinogen persisting perception disorder
After stopping, re-experiencing at least ONE perpetual symptom experienced while intoxicated, associated with distress.
VISUAL HALLUCINATIONS seem to be prominent
4% of hallucinogen users
Which opioid does not cause pupillary constriction?
Meperidine
Opioid intoxication?
PUPILLARY CONSTRICTION + ONE symptom
Drowsiness or coma
Slurred speech
Impairment in attention or memory
Opioid withdrawal?
AT LEAST 3 symptoms
Dysphoric mood N/V Muscle aches Lacrimation or rhinorrhea Pupil dilation, piloerection, sweating Diarrhea Yawning Fever Insomnia
Males can get spontaneous ejaculation
Peaks at 1-3 days, then subsides over 5-7 days
Methadone
Full agonist
Can cause prolonged QTc
Need higher doses to control cravings, 40-60mg ok for withdrawal
Highest risk of overdose in first 2 weeks of treatment
10-40mg in pregnancy
NOT TERATOGENIC
Can’t use naloxone or naltrexone in pregnancy
Cannabis receptors
CB1 = central, highest in basal ganglia, hippocampus and cerebellum (** remember C.B.H.)
CB2 = peripheral
Cannabis active metabolite?
11-hydroxy-delta 9 THC
Effect of IQ if regular cannabis use during adolescence?
Possibly decrease by up to 5-8 points
Cannabis use co-morbid use of other substances?
Tobacco (53%) Alcohol (40%) Cocaine (12%) Meth (6%) Heroin (2%)
Cannabis use co-morbid psychiatric illness?
ASPD (30%)
Anxiety (24%)
BAD (13%)
MDD (11%)
Externalizing 60%
Internalizing 33%
Cannabis intoxication
Intox = at least 2 symptoms
Conjunctival injection
Increased appetite
Dry mouth
Tachycardia
Cannabis withdrawal
Withdrawal = at least 3 symptoms within 1 week of stopping
Irritability/anger/aggression Anxiety Sleep problems Decreased appetite Restlessness Depressed mood Abdo pain/tremors/sweating/fever/chills/headache
Peak 1 week
Lasts 1-2 weeks
Caffeine
ADENOSINE RECEPTOR ANTAGONISM (increases dopamine activity)
Most used substance in the world
Decreases seizure threshold
OCPs DECREASE ELIMINATION OF CAFFEINE
Safe limit = 400mg
Half-life = 4-6 hours
Caffeine intoxication
> 250mg
At least 5 symptoms
Restlessness Nervousness Excitement Insomnia Flushed face Diuresis GI disturbance Muscle twitching Rambling thought/speech Tachycardia/arrhythmia Inexhaustibility Psychomotor agitation
Caffeine withdrawal
At least 3 symptoms
HEADACHE FATIGUE Dysphoric mood/depressed/irritable Difficulty concentrating Flu-like symptoms
Tobacco mechanism
AGONIST OF NICOTINIC CHOLINERGIC RECEPTORS
Dependence = INDIRECTLY THROUGH DOPAMINE INCREASE
Smoking cessation
Stopping suddenly vs. progressively has same outcome so patient preference
Varenicline
Most efficacious treatment
EAGLES STUDY: No neuropsychiatric side effects (used to be a black box warning)
PARTIAL AGONIST A4B2
Start 1 week before stop date
Progressively increase to 1mg BID x 3-4 months
Main side effect = nausea
Contraindicated in PREGNANCY and < 18 YEARS OLD
Nicotine Replacement Therapy
ABSORPTION DECREASED BY COFFEE
Requires complete cessation
Max 24 gums per day q1-2H
Patch highest is 28mg then 21, 14, 7 over 3-4 months
Bupropion SR (Zyban)
Start 1 week before stop date
Can be combined with patch
1st line in patient with history of MDD
2nd line smoking cessation agents?
NORTRIPTYLINE
CLONIDINE
Tobacco withdrawal
At least 4 symptoms
IRRITABILITY ANXIETY TROUBLE CONCENTRATING Increased appetite Restlessness Depressed mood Insomnia
Peaks 2-3 days
Lasts 2-3 weeks
Inhalant intoxication
NO WITHDRAWAL OR USE DISORDER criteria
Intoxication = at least 2 symptoms (episodes are brief)
Dizziness NYSTAGMUS Incoordination Slurred speech Unsteady gait Lethargy HYPOREFLEXIA Psychomotor retardation Tremor Generalized muscle weakness Blurred vision/diplopia Stupor or coma Euphoria
“Sudden sniffing death” not dose dependent!
Methanol intoxication
OPTIC NEURITIS
PUTAMEN NECROSIS
Carbon monoxide poisoning
GLOBUS PALLIDUS lesion
Most common co-morbidity with gambling d/o?
MDD
Gambling disorder criteria?
AT LEAST 4 IN 12 MONTHS
Increasing amount of money spent to get excited Irritable when tried to cut down Unsuccessful efforts to cut down/stop Pre-occupied with gambling Gambles when feels distressed Chases after loses Lies to conceal involvement in gambling Jeopardized social roles Relies on others to provide money for debts
Not better explained by manic episode
Episodic vs. persistent
Gambling disorder
0.4-1%
M > F
17% have attempted suicide
PROGRESSES MORE RAPIDLY IN WOMEN
TACHYCARDIA + ANGINA more common
Motivational interviewing
Miller & Rollnick
Sedative intoxication
At least ONE
Slurred speech Incoordination Unsteady gait NYSTAGMUS Cognitive impairment Stupor/coma
If severe, treat with flumazenil IV
Sedative withdrawal
At least TWO
Autonomic hyperactivity Hand tremor Insomnia N/V Transient visual/tactile/auditory hallucinations Psychomotor agitation Anxiety Grand mal seizures
Symptom REBOUND = hours/days
Symptom RELAPSE = weeks
SUD co-morbidities
BAD 56%
MDD 30-50%
Psychosis 50%
Anxiety 36%
Neurobiological pathways
Stress = increase amygdala (CRF, NE)
Cues = glutamate (prefrontal cortex)
Low dose = re-initiates via D2/D3 pathways (blunted previously by external source of dopamine)
False positive urine tests
Benzos = SERTRALINE Amphetamine = WELLBUTRIN, ABILIFY, TRAZODONE Opioid = POPPY SEEDS, QUININE PCP = VENLAFAXINE
Alcohol withdrawal mechanisms
REDUCED GABA NEUROTRANSMISSION
SEIZURES = GLUTAMATE MEDIATED