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Drug addiction-2
1. ASAM
Review Course in Addiction Medicine
Dissociatives, Hallucinogens, Steroids & Inhalants
Shannon C. Miller, M.D., FASAM, FAPA, CMRO
Staff Psychiatrist
Addiction Services
Cincinnati VAMC
Associate Professor of Clinical Psychiatry
Co-Director, Addiction Psychiatry Fellowship
Assoc. Dir. for Education in the Addiction Sciences
University of Cincinnati
Lieutenant Colonel, USAFR
Research Physician
USAF Research Lab
Consultant, Addiction Services
Lindner Center of HOPE Hospital
Lindner
Center of Hope
2. ASAMâs 2008 Review Course
in Addiction Medicine
ACCME required disclosure ofACCME required disclosure of
relevant commercial relationships:relevant commercial relationships:
Dr. Miller has nothing to disclose.Dr. Miller has nothing to disclose.
4. Anatomy of a Rave
⢠Promoters - ideological theme
⢠Venues - secret, 0400-daybreak
(event now becomes âundergroundâ)
âOutlawâ = smaller raves (<50 dancers), portable
generator, turntable, $1-2 admission
Medium -Large = legal sites, off-duty cops for
security, searching for
drugs/cameras/markers/H2O bottles, $20-40
admission, better amenities/DJâs
Large = thousands dancers, âchill-outâ rooms,
carnival-like amenities
5. Anatomy of a RaveAnatomy of a Rave
The Ravers
⢠Young (15 â 25)
⢠White, middle class
⢠NYC: 70% white, 20% Hispanic, 10% black
⢠Admission = $10 - $50
⢠Drugs = $10 - $40/night
⢠Average raver âshelf lifeâ = 2 years
Dissociatives,
Hallucinogens
6. Anatomy of a Rave
Clothing
⢠Function > Style
⢠Androgynous (M vs F, attractive vs not)
⢠Theme = Infancy/baby clothes vs aliens
⢠Headbands, b-ball caps, sneakers, baggy
pants, backpacks (candies, etc)
⢠Glitter, hair barrettes, infant toys
⢠Safe haven for ânerdsâ, âgeeksâ â attracted
by computer-driven music and internet
promotions
7. Anatomy of a Rave.
Drugs? True ravers dislike stigmatized drugs (cocaine,
heroin, etc.).
⢠Alcohol uncommonly served, thus no age limit for
admission and avoid ATF regulation. However, b/c
open after others close ď reports of many patrons
showing up drunk
⢠Club Drugs less stigmatized ⌠either because in pill
form or medically made
⢠Most common drug found is THC
⢠Promoters disallow bringing your own water (GHB)
8. Anatomy of a RaveAnatomy of a Rave
Staples sold on premises
Water bottles
âPower Drinksâ
⢠Marathon dancing
⢠Fruit juice, sugars
⢠Caffeine, guaranaCaffeine, guarana
⢠Amino acidsAmino acids
⢠B & C vitaminsB & C vitamins
âSmart drinksâ
⢠GinsengGinseng
⢠TryptophanTryptophan
âGo-goâ drinks
⢠âViagra for womenâ
⢠Ginseng, Yohimbine,
guarana
Herbal ecstasy
⢠Ma huang, ephedra
⢠Metabolift, Metabolife
356
⢠Ephedra:ephedrine
= 10:1
9. Anatomy of a RaveAnatomy of a Rave -- StaplesStaples
Drug paraphenalia
⢠Face masks
⢠Dust exposure
⢠Vicks menthol rub
Preloading (reduce
toxicity):
⢠Prozac
⢠5-HT
⢠L-Tyrosine
⢠Vitamin C
Glow stix
Pacifiers
Candy
âSextasyâ
⢠Take Viagra with MDMA
Chill-out rooms
10. âHallucinogensâ a poorly defined term
⢠LSD, psilocins, DMT, Mescaline ⌠PCP, THC,
amphetamines
⢠Diagnosis of exclusion
⢠Additional criteria
11. Hallucinogens ď ď Dissociatives
⢠Developed as surgical anesthetics
⢠Distortion of reality
â External
â Internal (senses)
⢠âDissociative anestheticsâ
⢠Disrupt Glutamate-NMDA
â Pain perception
â Responses to environment
â Memory & Learning
13. Dissociatives: Pharmacodynamics
⢠Glutamate turns on
PFC NDMA receptors,
which normally help
ensure the thalamus
can âfilterâ out sensory
ânoiseâ
⢠PCP blocks NMDA
receptors, resulting in
sensory overflow -- >
noise/psychosis (ie:
PCP intoxân, SCZ)
Tsai G, Gastfriend DR, Coyle JT. The glutaminergic basis of human
alcoholism. Am J Psychiatry 1995 Mar;152(3):334.
14. Dissociatives: Pharmacodynamics
⢠NMDA blockade may result in:
â Midbrain and PFC D release (?addiction)
â Activation of 5-HT systems, targeting 5-HT1A
receptor
⢠PCP proposed to have effects on:
â Acetylcholine
â DRI
â SRI
â Norepinephrine
15. Dissociatives: DSM
PCP Intoxication
A) Recent use
B) maladaptive changes, soon after use:
belligerence, assaultiveness, impulsivity,
unpredictability, agitation, poor judgment,
impaired social/occupational fxning)
C) >= 2:
Nystagmus (vertical/horizontal),
HTN/tachycardia, numbness/decreased
pain response, ataxia, dysarthria, rigidity,
seizures/coma, hyperacusis
D) Not due to GMC
16. Helpful âŚ
⢠Detachment, floating, distortion
⢠Inner/outer world
(time, space, body image)
⢠Hallucinations
⢠Increased HR, BP, T
PANIC
17. PCP â CSA Schedule I
⢠1950âs, Parke, Davis & Co
⢠1963-5 Sernyl: emergence delirium, agitation
⢠Brief 1960âs surge (delayed onset, agitation)
⢠70âs = powder ď snort, smoke ď potent & popular
ď vet Sernylan diversion ď pulled 1978
⢠LA-based Street Gangs own market share
⢠Tablets($5-15), vials($1-3), dipped cigâs ($20)
⢠Added to leafy material (tobacco, THC, parsley)
ď smoked (most common)
18. Annual Numbers of New Users of
Ecstasy, LSD, and PCP: 1965-2002
Ecstasy
LSD
PCP
Thousands of New Users
0
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2,000
1965 1970 1975 1980 1985 1990 1995 2000
19. PCP: Illicit manufacture
⢠Piperzine, cyclohexane, potassium cyanide
⢠PC (1-piperidinocyclohexancarbonitrile)
â Intermediate product
â Breaks down within physiologic saline to cyanide
(CN) ď some deaths
20. PCP: Intoxication
⢠Invulnerable, strength ď ~1/3:
agitation, violence towards others
⢠Nystagmus (vertical, rotatory, horizontal)
⢠Rarely see dilated pupils (unlike stimulants,
hallucinogen intoxication, opioid withdrawal)
⢠Hyper-reflexia, HTN (unlike sed-hypâs)
⢠CPK, SGOT/AST may be elevated
21. NMDA
antagonism,
monoamine RI,
Na+
& K+
channel
blockade
Stage I Stage II Stage III
Dose 2-5mg 5-25mg >25mg
[Serum] 25-90ng/mL 90-300 >300
CNS âconc,
dysarthria
Stupor-mild
coma
Deep coma
Cardiac â â â â â â, failure
Temp 98-101 101-103 103-8, +/-
malignant
hyperthermia
Neuro Rigidity,
â DTRâs
⌠& seizures,
twitching
⌠& no deep
pain response,
no DTRâs,
decerebrate
posturing
22. PCP: Intoxication
Management
⢠Low-stimulation environment
⢠Avoid âtalking them downâ (unlike with hallâs)
⢠Rhabdomyolysis
â Musc. Rigidity, agitation, +/- physical restraints
â Progression to ARF in as many as 2% in ER (DSM IV)
â Serial CPKâs may be helpful
⢠Acidification of urine (ammonium chloride,
ascorbic acid) -- ?
⢠Benzoâs +/- antipsychotics PRN (avoid
anticholinergics)
23. Dissociatives (PCP)
Withdrawal*
â Animal models show severe withdrawal:
vocalizations, bruxism, oculomotor
hyperactivity, diarrhea, piloerection,
somnolence, tremor, seizures
â Long half life in humans; accum. in fat/brain
â It may be that a significant part of what DSM
IV attributes to intoxication delirium is actually
withdrawal,
â *
but PCP Withdrawal is NOT a DSM IV
diagnosis
25. Ketamine: CSA Schedule II
Injectable dissociative anesthetic (1963)
Manufactured for veterinary and pediatric surgery
anesthesia (theft)
â minimal cardiac, respiratory effects
â less agitation, psychoses
NMDA receptor blockade
Less potent, shorter-acting âŚ
Drug facilitated sexual assault (odor, color, taste,
amnesia, testing)
90% of legal K sold = vets (street value 6X this)
26. Ketamine
⢠Gained popularity for abuse in the 1980âs by
New Age spiritualists
⢠Large doses cause effects ~ PCP
⢠K-Hole (helpless detachment), K-slide
⢠Liquid, topical gel, powder ď snorted; smoked
with THC or tobacco products; injected
⢠Lower doses: poor attn, learning, memory
⢠At higher doses: HTN, amnesia, delirium,
poor motor control, depression, respiratory
decompensation, minimal risk OD (LD50 is
30X anesthetic dose)
27. Street Names:
⢠Kit Kat
⢠Cat Valiums
⢠K
⢠Special K
⢠Super K
⢠Vitamin K
⢠Ket nip
⢠Horse trank
Ketamine
28. PCP and Ketamine
Long term adverse effects from chronic use:
⢠Depression/dysphoria
⢠Memory and cognition
⢠Apathy
⢠Irritability
⢠Flashbacks
Âź of pts originally treated for PCP psychosis are
diagnosed < 1 yr later with SCZ (without drug
use)
29. Dextromethorphan
⢠At indicated doses, DM inhibits medullary
cough centers to approximately the same
extent as opiate alkaloids such as codeine,
but without other opioid effects such as
analgesia, CNS depression, and respiratory
suppression
⢠As approved: efficacious, safe for OTC use
30. Dextromethorphan
Maximum/Extra Strength Cough Suppressant: 15
mg Dextromethorphan Hydrobromide per
teaspoon [5mL] ď 8 oz bottle = ~711mg DXM
Abuse: 300 to 1,800 mg (20-120X reccâd dose)
Cases of 24 oz/d (40oz/d peak, = 237x recc
dose)
Some ongoing for 10â15 yrs (HCP)
32. Dextromethorphan
Likely used more than any
dissociative, or hallucinogen, today
Wide appeal
⢠Teens
⢠Middle-aged workers
⢠Later life (from 1960âs)
33. Dextromethorphan
Powder and the Internet
.
Coricidin ÂŽ HBP Cough & Cold â largest/30mg
Gel caps
Mixed with heroin, MDMA, or cannabis (âcandy
bluntsâ)
Intranasal
âRobofireâ â 2002 Dec
⢠DM dissolved in lighter fluid ď crack-like
rockď smoked (?better hallucinations)
⢠DM drank, then lighter fluid inhaled
34. Dextromethorphan
⢠DM Readily absorbed from gut
⢠Peak serum levels @ ~2-3 hrs for immediate
release, 6 hrs for sustained release
preparations
⢠Dextrorphan (DOR) peak levels @ ~1.6-7 hrs
⢠Euphoria and hallucinosis occur within 15-30
min of ingestion, peak effects in about 2.5
hrs. âPlateausâ = 3-6 hrs
35. ⢠Weaker sigma opioid agonist,
stronger NMDA antagonist than DM
⢠Relatively inactive at mu, kappa and
delta receptor sites â thus essentially
devoid of more conventional opiate properties,
although respiratory depression has been reported
with massive ingestion
36. Dextromethorphan
⢠Sigma-1 opioid receptor site is
involved in the regulation of
glutamatergic NMDA receptor
functioning, dopaminergic tone, and
serotonin release
⢠(DM binding at sigma-2 opioid
receptor sites may alternatively
cause impaired motor movements
that may be observed during DM
intoxication)
44. Hallucinogens
⢠Serotonin-like structure (Indolealkylamines)
â Lysergamides: LSD (Lysergic Acid Diethylamide), LSA
(Lysergic Acid Amide)
â Substituted tryptamines: Psilocybin, Psilocin, DMT, 5-
MeO-DMT, DET, DPT, AET, AMT, 5-MeO-AMT
⢠Amphetamine-like structure (Phenylalkylamines)
â Phenethylamines: Mescaline, Nexus
â Phenylisopropylamines: A-M-Mescaline, MDA (MDMA),
DOB, DOM, DOI
â Structurally similar to phenylalkylamine hallucinogens,
but functionally NOT primarily hallucinogenic; have
stimulant and/or other properties.
45. Hallucinogens:
Pharmacodynamics
Illusionogen = better term
⢠Illusions = alteration or enhancement of an existing
sensory perception (visual, time, sound). Intact reality
testing in most (?). Effect varies greatly with set
(expectations) and setting (environment)
5HT2A agonists (both Indolealkyl- and Phenethyl-amines)
⢠Any 2 of the 3 correlate significantly:
â Higher 5HT2 receptor affinity
â Animal drug discrimination-derived potencies
â Human hallucinogenic potency
⢠5HT2 antagonists (ketanserin, pirenperone, etc)
reduce hallucinogen effects
Also bind at 5HT2B and 5HT2C receptors
46. Hallucinogens: Intoxication
B) Maladaptive changes developing during/shortly after
use: anxiety, depression, ideas of reference, fear of
losing oneâs mind, paranoia, poor judgment, etc.)
{euphoria most common, though}
C) Perceptual changes occurring in a state of full
wakefulness and alertness, during/shortly after use:
intensification of perceptions, depersonalization,
derealization, illusions, hallucinations, synesthesias)
D) >=2 developing during/shortly after use: pupillary
dilation, tachycardia, sweating, palpitations, blurring
of vision, tremors, incoordination {stimulant effects}
E) Not due to GMC {also, see hyper-reflexia}
47. Hallucinogens: Intoxication
⢠Effect depends upon set and setting
⢠Geometric shapes
⢠Worse w/eyes closed
⢠Afterimages
⢠Hyperacuity (not auditory hallucinations)
⢠Touch hypersensitivity
⢠Time standing still
48. Hallucinogens: Diff Dx
⢠Clear sensorium (delirium)
⢠Intact remote and recent memory
⢠Fairly oriented (delirium)
⢠Hyperalert (drowzy in THC)
⢠Intact reality testing â usually (otherwise,
consider dx of a primary Psychotic D/O
NOS, SCZ, or A intox) ď thus, âtalking
downâ might prove beneficial
⢠Visual >>> auditory (SCZ, mood, etc)
⢠EEG = arousal (delirium = slowing)
⢠SPECT = hyperfrontal (hypo- in SCZ)
51. LSD
⢠Most potent hallucinogen (micrograms)
⢠Hallucinogen (Illusionogen) - 5HT2A
partial agonist
⢠Difficult to make (ingredients = CSA III)
⢠California groups owned market share,
protect it
⢠Potency ? Much less than 1960âs
52. LSD
⢠Albert Hofmann
(Sandoz chemist)
1938
⢠Lysergic acid
compounds
derived from a rye
fungus, ergot
⢠âAccident,â 1943
53. LSD
⢠Water soluble; clear, white, odorless crystals
⢠Sold in plastic, opaque canisters (film) â
oxidation/degrades ď discolors (distributors
use colored paper for the blotter art)
⢠Pressed into pills = âmicrodotsâ ... thin gelatin
squares = âwindow panesâ
⢠Breath mints, sugar cubes (dropping acid),
blotter paper (most common)
⢠Street dose = 70-300mcg, effects reported
from as little as 20mcg
54. LSD
⢠Marketed as Delysid in 1947:
â Rxâd for schizophrenia, alcoholism,
criminal behavior, sexual perversion
â Medical students, help understand SCZ
⢠Schedule I, CSA:
1. High abuse potential
2. No legitimate medical indication
3. Lack of accepted safety under medical
supervision
55. LSD
⢠Readily absorbed from gut
⢠Diffuses to all tissues; brain, placenta, fetus
⢠Onset 30-60 min (oral)
⢠Peak = 2-4 hours
⢠Resolves 8-12 hrs
56. LSD: Street names
Often based on carrier:
⢠Acid
⢠Bart Simpsons
⢠Liquid
⢠Liquid A
⢠Lucy in the sky with
diamonds
⢠Microdots
⢠Dots
⢠Mind detergent
⢠Blue unicorn
⢠Orange cubes, micro-
⢠Tabs
⢠Barrels
⢠Paper acid
⢠Sandoz
⢠Sugar, sugar cubes
⢠Sunshine
⢠Twenty five (-th)
⢠Windowpanes
57. LSD
⢠Hallucinogen Persisting Perception
Disorder (Flashbacks)
â Unrelated to dose, # exposures
â Usually none after 1-2 years (cases of after
5 years)
â beltway bumper
â High lifetime prevalence of mood d/oâs vs
non-LSD using substance users
⢠Rapid (psychological) tolerance; crosses
with psilocybins, mescaline â> lower f of
use
58. LSA (LySergic acid Amide)
⢠Morning Glory Seeds ď grind up
⢠5-10% the potency of LSD
⢠20-30 mcg LSD ~ 100-300 morning glory
seeds (insecticide exposure)
59. Psilocybins, Psilocins
⢠Use dates back to 1000 - 500 BC
⢠Aztecs
⢠1957 Sandoz assisted researchers in
extracting it
⢠Synthesis technique developed
⢠May 13, 1957 LIFE issue: described
Mazatech velada, 7 varieties of mushâs
⢠âMagic Mushroomsâ in the 1960âs
(Psilocybe mexicana)
60. Psilocybins, Psilocins
⢠Central America, Mexico
⢠Both psychoactive (psilocin more) --
ratio varies among mushrooms
⢠Psilocin less stable,oxidized upon
drying
⢠Dried mushrooms = 0.2% - 0.4%
psilocybin, only trace psilocin
⢠4-8 mg of mixed psilocin/cybins =
hallucinations (~2gm of mushrooms)
61. Psilocybins, Psilocins
⢠Intoxication duration = 2 hours
⢠Synesthesias
⢠Detachment from reality, Enmeshment with
surroundings
⢠Inability to discern fantasy from reality -->
panic attacks, psychoses
⢠More ânaturalâ high than w/LSD
⢠Rapid tolerance ⌠cross tolerance w/LSD
62. DMT
Naturally occurring
â Plants: Phalaris aruninacea = DMT + 5-MeO-DMT
(MeO- increases lipid solubility, 10X potent)
⢠âBusinessmanâs Tripâ â rapid onset, short duration (<60min) â
snorted/ IV/smoked (oral â inactivated)
⢠MAOI enables oral use (lengthens catabolism)
â Toads: Bufo alvarius (Sonoran Desert Toad)
⢠Glandular venom = 6-16% 5-MeO-DMT
⢠Skin contains 5-MeO-DMT (50-160mg/g skin)
⢠3-5mg = psychoactive effect
⢠1959: predominant alkaloid in the hallucinogenic snuffs of
several tribes in South America
63.
64.
65. DMT userâs account âŚ
Within thirty seconds, there will be an onset of almost
overwhelming psychedelic effects. You will be
completely absorbed in a complex chemical event
characterized by an overload of thoughts and perception,
brief collapse of the EGO, and loss of the space-time
continuum. Relax, breathe regularly, and flow with the
experience. After two to three minutes, the initial
intensity fades to a pleasant LSD-like sensation in which
visual illusions, hallucinations, and perceptual distortions
are common. You may sense a distortion in your
perceived body image or notice the world shrinking or
expanding. You may notice that colors seem brighter and
more beautiful than usual. And, most likely, you will
experience a euphoric mood interspersed with bursts of
unmotivated laughter.
66. DET, DPT, AET
⢠Substituted tryptamines
⢠Similar in effect to DMT
⢠Less potent
⢠Schedule I of CSA
68. Mescaline
⢠Principal psychoactive agent found naturally in
the peyote cactus
⢠3,4,5-trimethoxy-phenethylamine
⢠1st
hallucinogen isolated (Arthur Heffter 1896)
⢠Peyote cactus: central Mexico â south Texas
⢠300BC â religious rites
⢠Comanche, Kiowa, Navajo, Sioux
⢠Supreme Court protects religious use within
Native American Church (no synthetics)
⢠Canada
69. Mescaline
⢠Peyote cactus
⢠Crown (top) contains buttons
⢠Buttons are cut off, dried
⢠1-6% of dried button = mescaline
⢠6-10 buttons =
intoxication (100â350mg required)
⢠Chewed or soaked in water
70. Mescaline: Intoxication
⢠30 min delay
⢠2 phases:
First hour
â Minor perceptual changes
â Adrenergic stimulation (increased resp. rate; face
& neck muscular tension)
â Nausea (can be severe) -- other alkaloids
Next several hours (as much as 5-10)
â Visual illusions, hallucinations
â synesthesias
71. Importance of set, setting
⢠Religious rituals, guides
Mescaline
â A&E documentary (father gives drug to
son); religious leader
Beta-carbolines
â Harmaline +/- DMT, 5-MeO-DMT
â Stingâs memoir (exploring personal life
meaning)
â ayahuasca (South American ritual
beverage)
â Mestre
73. DOM, DOB, DOI
⢠DOM (âSTPâ)= âmodelâ/reference
hallucinogen in drug discrimination studies
⢠dimethoxymethylamphetamine
74. Hallucinogens â
sub-grouped by effect, not by structure
S
H P
⢠H (nonintersecting) = Hallucinogens âproperâ (model = DOM)
⢠S = Central stimulants (model = +amphetamine)
⢠P = Other effects (empathy) (model = PMMA)
75. MDA, MDMA (ecstasy)
deferred to stimulants lecture
S
H P
⢠Central region = racemic MDA
⢠H/P = -MDA S/P = +MDA, MDMA
⢠P = PMMA (âwhite deathâ), MBDB (âeden, methyl Jâ), 4-
MTA (âflatlinersâ)
76. SteroidsSteroids
⢠Synthetic derivatives of the male
hormone testosterone
⢠Rx uses: delayed puberty, impotence,
wasting due to HIV, etc.
⢠2 effects:
1. Anabolic (maximize): skeletal muscle growth
(via retaining N, directly stimulate protein
production, increase availability of ATP to
muscles, increased Hct)
2. Androgenic (minimize): male sexual charâs
77. Steroids
⢠1930âs: testosterone synthesized
⢠1940âs-50âs: use in sports
⢠1950âs: brought to US by Dr John Zeigler,
natâl weightlifting team doc; f/Eastern Bloc
countries after 1952 Olympics success
⢠1968: drug testing at Olympics
⢠1975: banned by IOC
⢠1990: CSA Schedule III
78. Steroids
⢠Purpose of abuse: muscle, appearance
â Triad: athletes, aesthetes, fighting elite
⢠Doses: abused @ up to 100X reccâd dose
⢠Routes:
â Oral: Anadrol (oxymetholone), Oxandrin (oxandrolone),
Dianabol (methandrostenolone), Winstrol (stanozolol), etc.
â IM: Deca-Durabolin (nandrolone decanoate), Durabolin
(nandrolone phenpropionate), Depo-Testosterone
(testosteronecypionate), Equipoise (boldenone
undecylenate), etc
⢠ârewardâ = delayed
⢠Many case reports of âdependenceâ
79. Steroids: Terminology
⢠Stacking: taking 2 or more (a)
steroids/stimulants/pain killers and/or (b)
routes {po, IM}. âThe whole is greater than
the sum of the parts.â
⢠Pyramiding: taper-up the doses over 6-12
weeks, then taper-down over next 6-12
weeks just before the event
⢠Plateauing: when a drug becomes ineffective
at a certain level
⢠Cycling: different drugs/times
80. Steroids: Epidemiology
Ages 13-25, 90% male
Prevalence studies
⢠Power lifters @ natâl competition = 55%
⢠High school athletes = 4.9-6.6%, 2/3 began < age 16
⢠College athletes = 17%, male football = 30%
⢠More likely to use alcohol, drugs, tobacco
⢠30% inject, 1/3 share the needle
83. Inhalants
A) Volatile solvents (vaporize @ room temp):
Adhesives: airplane glue, rubber cement, polyvinylchloride cement
Aerosols: spray paint, metallic spray paint, hair spray, deodorant, air
freshener, vegetable oil spray, analgesic spray, asthma spray
Solvents and Gases: nail polish remover, paint remover, paint
thinner, typing correction fluid, fuel gas, cigarette lighter
fluid/butane, gasoline, freon
Cleaning agents: dry cleaning fluid, spot remover, degreaser
Propellant gases: nitrous oxide (whipped cream), propane
B) Nitrites: cyclohexyl-, amyl-, butyl-, isobutyl- nitrite
(butyl, propyl, and certain other nitrites banned in 1991)
C) Anesthetics: (gaseous, liquid, local injection)
84. Inhalants
⢠1/6 adolescents tries inhalants, most 1-5x
⢠Males, non-Hispanic white youths
⢠Inhalant Dependence is uncommon
(0.3% prevalence, 1 in 27 lifetime
users)
⢠Not passing fad, 10% use > 6 years
⢠Strong assoc. with ASPD, PSA, later IVDA (5-9X)
⢠Developing countries
85. Inhalants
⢠Highly lipophyllic HC chains, cross into brain
Pharmacodynamics
⢠Unknown, ~ to dissociatives (NMDA) and
alcohol/sedatives (GABA)
⢠Drowsiness settles in for several hours
⢠Toluene increases extracellular D in PFC
⢠Toluene, nitrous oxide, & chloroform have
reinforcing properties in self-administration
studies
.
86. Inhalants: Terminology
⢠Sniffing
⢠Huffing: cloth (or mask) (soaked with substance) applied to
face and breathed in
⢠Bagging: enclosing the substance in a bag and breathing it in
⢠Poppers, snappers: ampules of amyl nitrite Rxâd for angina
(broken and inhaled). 1960 FDA allowed OTC use. Increase in
abuse (gay men: smooth muscle relaxation, vasodilation ď
sexual enhancement). FDA restored Rx requirement. Also:
butyl/isobutyl nitrite/cyclohexyl (nowadays find them sold as
video head cleaner or room deodorizer in adult sex shops)
⢠Whippet: balloons/bags filled w/ N2O (laughing gas)
⢠Torch, fire-breathing: exhaling + igniting volatile gases
(propane, butane)
⢠Texas shoe shine: toluene-containing spray paint
87. ⢠Odor of paint, solvents (clothes, breath)
⢠Residues, burns, related traumas
⢠âGlue snifferâs rashâ around nose & mouth, conjunctival
irritation
⢠Cough, sinus discharge, dyspnea, rales, rhonchi
⢠Neuro: weakness, peripheral neuropathy,
cerebral/cerebellar/brain stem atrophy, white matter
lesions, MS-like syndrome, dementia, delirium
⢠Hepatitis, cirrhosis
⢠Metabolic acidosis with distal renal tubular acidosis, CRF
⢠Bone marrow suppression
⢠Neuropsychological testing problems in chronic inhalant
users
Inhalants: PE, lab
88. Inhalants
Intoxication
A) Recent use/exposure
B) Maladaptive changes developing during or
shortly after use: belligerence,
assaultiveness, apathy, impaired judgment,
etc.
C) >=2 developing within 2 hours of use:
dizziness, nystagmus, incoordination, slurred
speech, unsteady gait, lethargy, depressed
reflexes, psychomotor retardation, tremor,
gen. muscle weakness, blurred
vision/diplopia, stupor/coma, euphoria
D) Not due to GMC
89. Inhalants
Withdrawal
None, per DSM.
However, a mild syndrome beginning 1-2 day after
last use and extending for 2-5 days has been
described. Symptoms may include sleep
problems, tremor, irritability, diaphoresis, nausea,
fleeting illusions.
Abuse, dependence, and tolerance are
confirmed
90. Inhalants:
âSudden sniffing deathâ
Falling unconscious on source/rag; âhands-freeâ use during sex
Acute arrhythmia ***
Heart failure (from butane or chlorofluorocarbons
associated hyper-excitability to NE)
Hypoxia **
Suffocation (as substance replaces oxygen)
Methyl chloride ď carbon monoxide
Poppers (ampules of amyl/butyl/isobutyl nitrite ) â
reduce oxygen carrying capacity
CNS, respiratory depression
Electrolyte abnormalities *