Substance Use Flashcards
What is addiction? (DSM-4)
- Substance use
- Use/procurement despite problems
- Return to use after period of abstinence
- Inability to control use
- Pre-ocupation
- Cognitive changes (over-valuation, de-valuation, minimization/denial)
- Enhanced cue responsiveness via conditioning/generalization
What are different aspects of recovery?
- Clinical (absence of sx)
- Social
- Economic
- Personal
What is dependence? (DSM-4)
Maladaptive pattern of substance use leading to clinically significant impairment or distress, as manifest by 3+ of the followed w/in the same 12 months:
- Tolerance
- Withdrawal
- Using more or for longer than intended
- Inability to cut-down/control
- Takes up your time (to get it or to recover)
- Activities reduced
- Continued use despite problems
What personality d/o has the highest incidence of substance use d/o?
- What 2 mood d/o’s come in 2nd and 3rd?
- Anti-social personality d/o
- BD
- Schizophrenia
How many ounces in 1 drink of liquor?
Beer?
Wine?
Liquor: 1 oz
Beer: 12 oz
Wine: 4oz
What % of 12th-graders have been drunk once in the last month?
26.8%
(14.7% 10th graders)
(5% 8th graders)
When is the first episode of etoh intoxication likely to occur?
- When does are of onset of etoh DEPENDENCE peak?
Mid-teens
- Peaks 18-25 y/o
What are the signs of etoh intoxication?
- Slurred speech
- Incoordination
- Unsteady gait
- Nystagmus
- Impaired attn or memory
- Stupor or coma
What are the possible somatic tx’s for acute intoxication w/etoh?
- Reassurance
- Maintenance in a safe/monitored environment
- Decrease external stimulation
- Provide orientation and reality testing
When does mild-mod etoh withdrawal start?
- What are some s/s?
W/in first several HRS s/p cessation/reduction of heavy drinking
- N/V
- Anxiety
- Tachycardia
- Irritability
- HTN
- Autonomic hyperactivity
- Tremors
- Insomnia
When do etoh withdrawal sx peak?
2nd day of abstinence
When do etoh withdrawal sx usually resolve?
4-5 days after withdrawal sx peak (~6-7 days total)
When does severe etoh withdrawal occur?
- What are some s/s?
W/in 1st several DAYS s/p cessation/reduction
- Clouding of consciousness
- Trouble sustaining attn
- Disorientation
- Grand mal seizures
- Fever
- Respiratory alkalosis
- Hallucinations
- Delirium
What are the two main goals of mod/severe etoh withdrawal tx?
- Reduce CNS irritability
2. Restore physiologic homeostasis
Which pts undergoing etoh withdrawal will likely require hospitalization?
- H/o withdrawal seizure
- H/o DTs
- Documented h/o heavy etoh use and high tolerance
- Concurrently abusing other substances
- Severe co-morbid medical/psychiatric d/o
What is CIWA-Ar?
- How many items are in it?
- Why do we use it?
Etoh withdrawal protocol (rates severity and freq of sx)
- 10-item (scored 0-7)
- Guides drug use
What CIWA score indicates mild withdrawal?
Mod?
Severe?
- Mild: = <10
- Mod: 10-19
- Severe: >20
(some ppl use different cutoffs)
What is the tx for mild etoh withdrawal?
- Generalized support
- Reassurance
- Frequent monitoring
What is the tx for mod/severe etoh withdrawal? (3)
- BZDs
- Thiamine
- Fluids
What is “kindling,” w/r/t etoh withdrawal?
Repeated episodes of withdrawal may lead to a worsening of future withdrawal episodes
(these pts require more aggressive tx)
When considering pharm tx for mod/severe etoh withdrawal, what factors should you consider?
- Relieves sx
- Prevents seizures/delirium
- Benign side effects
- Relatively safe in OD
What route of BZDs can you use in etoh withdrawal?
- PO a/o IV
- Do not use IM
(Definite info regarding which BZD is superior does not exist)
Compare and contrast the equivalent doses of alprazolam, chlordiazepoxide, clonazepam, chlorazepate, diazepam, lorazepam, and oxazepam.
- Clonazepam: 0.5mg
- Alprazolam: 1mg
- Lorazepam: 2mg
- Diazepam: 10mg
- Chlorazapate: 15mg
- Oxazepam: 15mg
- Chlordiazepoxide: 20mg
Compare and contrast the onset speeds of alprazolam, chlordiazepoxide, clonazepam, chlorazepate, diazepam, lorazepam, and oxazepam.
- Diazepam: very fast
- Chlorazapate: fast
- Clonazepam: intermediate
- Alprazolam: intermediate
- Lorazepam: intermediate
- Chlordiazepoxide: intermediate
- Oxazepam: slow
Compare and contrast the T1/2’s of alprazolam, chlordiazepoxide, clonazepam, chlorazepate, diazepam, lorazepam, and oxazepam.
- Alprazolam: short
- Lorazepam: short
- Oxazepam: short
- Clonazepam: long (18-50 hrs)
- Chlordiazepoxide: long (30-200 hrs)
- Chlorazapate: long (30-200 hrs)
- Diazepam: long (30-200 hrs)
What is the tx for CIWA-Ar < 9?
No dosing required; monitor w/q4H CIWA
What is the BZD tx for CIWA-Ar 10-20?
- Lorazepam 2mg
- Diazepam 10mg
- Chlordiazepoxide 50mg
What are the tx considerations for CIWA-Ar >20?
Consider tx in a more highly monitored setting (eg ICU)
- Consider more aggressive BZD dosing
In ETOH withdrawal, which BZDs are indicated for pts w/severe hepatic dz, elderly, or dementia?
(short or long-acting?)
Short-acting
- Lorazepam
- Oxazepam
*What are the features of DTs?
- Autonomic hyperactivity (tachycardia, diaphoresis, fever, hypotension)
- Insomnia
- Perceptual disturbances
- Hallucinations (visual, tactile)
- Fluctuating level of psychomotor activity
Why are DT’s considered a medical emergency?
- May be assaultive or suicidal
- May act on hallucinations
- Often preceded by seizures
- May appear de novo
*What is the % mortality for ETOH withdrawal delirium?
1%
What is the tx for DTs during etoh withdrawal?
- Best tx is prevention
- BZDs to calm and raise seizure threshold
- Consider seclusion
- Fluids (PO if tolerated, or IV)
- Skilled verbal support
What drugs can be used to reduce signs of autonomic hyperactivity during DTs?
- BBs (eg propranolol) for tremor, tachycardia, HTN, and diaphoresis
Can alpha-agonists help in tx of DTs?
- Yes, can reduce tremor, HR, and BP
eg clonidine
What anticonvulsants may be useful during DTs?
- Carbamazepine (Tegretol)
- Divalproex sodium (Depakote)
- Benzos
What is the brand name for acamprosate?
Campral
What is the brand-name for extended release IM naltrexone?
Vivatrol
What is the brand-name for PO form of naltrexone?
Revia
- What is the MoA of naltrexone?
- What is its role in ETOH use d/o tx?
- Opioid antagonist
- Prevents opioid-mediated euphoria and rewarding effects of etoh
- Blunts subsequent craving for etoh
- Better than PBO; reduces heavy drinking days; decreases rates of relapse
In etoh tx, naltrexone appears to work better when combined w/….
Psychosocial tx’s
- Relapse prevention
- CBT
- Coping skills
What are the side effects of naltrexone (vivatrol, revia)
- Hepatotoxicity
- Ppt’s opioid withdrawal
- HA
- Fatigue
- Dysphoria
- N/V
- Abd pain
When is hepatotoxicity more likely w/ naltrexone?
In morbidly obese or at high doses
What is the MoA of acamprosate (Campral) in etoh withdrawal/tx?
- A GABA analogue
- Presumed to work at glutamate receptor sites -
Normalizes aberrant glutamate system that occurs in protracted withdrawal and cravings (decreases cravings)
When should acamprosate be started? (before or after stopping drinking)
What are the benefits pts see w/ use of acamprosate?
Start it once they’ve stopped drinking
- Increased time prior to relapse
- More abstinent days during year of tx
- Can be used in liver disease (excreted renally)
What are adverse effects of acamprosate?
When is it contraindicated? (1)
- Well-tolerated
- Diarrhea
Contraindicated in renal disease.
Brand name for disulfiram?
Antabuse
What does disulfiram do?
- What is MoA of disulfiram?
Aversive therapy
- Inhibits aldehyde DH, increasing blood levels of acetaldehyde
What are the effects of disulfiram?
- Heat in face/neck
- HA
- Flushing
- N/V
- Hypotension
- Anxiety
- Tachycardia
- SOB
Who are the best candidates for disulfiram tx?
- Intelligent
- Motivated
- Not impulsive
- Drinking triggered by unanticipated internal ro external cues
(NEVER use w/o pts knowledge/consent)
What are the contraindications for disulfiram?
* What rxn can it cause?
- Highly impulsive
- Poor judgment
- Severe co-existing psych illness
- May cause “alcohol-antabuse” reaction 1-2 wks s/op last dose
__% of US population has tried cocaine w/ __% report using in last year.
10% tried
20% did in last yr
Lifetime rate of cocaine abuse or dependence?
2%
What % of cocaine users smoke crack?
33%
What age range has highest cocaine use?
18-25, 26-34
Sex differences b/w cocaine users?
M x2 > F
Which is most potent/addictive?
Routes of cocaine use?
- Snorting (tooting)
- SQ (“skin popping”
- IV
- # Smoking (freebasing/basing)
- PO (rare)
T1/2 cocaine?
1 hr
Major metabolite of cocaine and when can it be detected?
Benzoyelcgonine
- 2-3 days s/p single use