Lecture 61: Hallucinogens Flashcards
What are the types of hallucinogens?
- LSD
- PCP
- MDMA
- Anticholinergics
- put them in constraints
- stop anticholinergic medications - Inhalants
- only hallucinogen that causes brain damage
What are the types of hallucinogens?
- LSD
- PCP
- MDMA
- Anticholinergics
- put them in constraints
- stop anticholinergic medications - Inhalants
- only hallucinogen that causes brain damage
What is acid?
LSD, Lysergic Acid Diethylamide
This is the drug that the CIA tested on men about to fuck prostitutes LOL
What are the clinical manifestations of LSD?
- Perceptual distortions
- micropsia (you think people are smaller than you)
- macropsia (you think people are bigger than you)
- Derealization, depersonalization
- Visual hallucinations
- Synesthesia
- hearing colors
- seeing smells
- Euphoria or lability
- Ego fragmentation
What is the mechanism of LSD?
Involves serotonergic systems
Not exactly known…FUCK YOU
Acts through the 5HT-2 or the serotonin 2 recept0r
What is the significance of 5HT-2 or serotonin 2 receptor?
The main mechanism thought to underlie LSD
What are the consequences of acid?
No evidence of permanent cognitive change
Unmasks psychiatric vulnerabilities
State of panic and fear of imminent insanity
What is the treatment for acid?
- Ride the wave…hold their hand lol
- Reassurance and support
- Benzodiazepines
What is Peyote cactus? Psilocybin mushrooms?
Mescaline, hallucinogen that is similar to acid
Mushrooms also have the same manifestations as acid
What is Wet? Angel dust? Peace? Hog?
Phenyclidine (PCP)
-originally an anesthetic agent
What are the clinical manifestations of PCP?
- Euphoria, PEACEFUL floating
- disconnected from world
- oblivious to surroundings
- flat affect
- uncommunicative
Initial effect is 5 minutes vs. 45 minutes for acid - slurred speech,
- VERTICAL NYSTAGMUS
- DELUSIONS and perceptual disturbances
- Feelings of numbness in hands and feet, makes it so that you cant walk
- distortions of body image, space and time
What is the association between nystagmus and PCP?
PCP leads to VERTICAL nystagmus
What intravenous anesthetic is similar to PCP?
Ketamine
What are the consequences of PCP?
- hyperacusis
- amnesia
- hostility, muscle rigidity
- convulsions
- excessive salivation without a gag reflex
What is the mechanism of PCP?
NMDA receptor ANTAGONIST -blocks glutamate DA, 5HT, K, Na channel receptos may be implicated No clear evidence of brain damage Long period of clearing for 2-3 weeks marked by -dulled thinking -dulled reflexes -loss of impulse
What is the treatment for PCP?
- Benzos (seizure prophylaxis)
- Antipsychotic for paranoia (Haldol)
- Gastric suction (if in coma)
- Acidification of urine to increase excretion
What is NOT effective treatment for PCP?
Reassurance and support DOESN’T WORK
-because patient is DETACHED from reality
Is there physiological dependence for hallucinogens?
No, there is no tolerance/withdrawal
-but could be a psychological dependence
What are the clinical manifestations of MDMA (methyleneDioxyMethamphetamine)?
- Euphoric and loving feeling
- Loss of boundaries and defense mechanisms
- loss of distinction between self and others
- decreased sense of separation from others
- Disinhibition
- decreases defensiveness
- Promotes intimacy
- Cognitive distortions
- slowed mentation
- cognitive apathy
- Perceptual distortions
- intensified visual perceptions
- possibility of visual hallucinations
- Increased anxiety
What is bruxism?
Characterized by grinding of teeth and clenching of jaw
What is the underlying mechanism of MDMA?
Inhibition of SERT
Vesicular release of BOTH dopamine and serotonin
Increase dopa and serotonin
Not well characterized
What are the detrimental effects of MDMA?
Evidence of destruction of serotonergic pathways Greater risk of serotonin Also Increased BP Increased HR Dry mouth Bruxism (grinding teeth) and dehydratioin -seizures
What is the treatment for MDMA?
- Care sought for dehydration
2. Reassurance, support and education
What are types of anticholinergics?
- Atropine
- Benadryl
- Diphenhydramine (Tylenol)
- Tricyclic antidepressant
- Benztropine
- Over the counter sleep aids
What causes the adverse effects of TCA?
Anticholinergic
Antisympathetic
Antihistamine
Usually MOA INCREASES serotonin and dopamine
What are the clinical manifestations of anticholinergics?
- Delirium
- waxing and waning of consciousness (presents differently when attending comes around)
- impulsivity
- impaired judgement
- hallucinations
- Hallucinogenic effects
- misperceptions
- dysphoria
What are the Toxic effects of anticholinergics?
- fever
- warm dry skin
- tachycardia
- dilated pupils
- decreased peristalsis
What is the treatment for anticholinergics?
- discontinue offending agent
- Protect patient against involuntary harm to self or others
- chemical and physical restraints
- give them an antipsychotic rather than benzo
- gastric lavage (stomach pumping)
- Parenteral Physostigimine (reverse saturation of cholinergic receptors)
Why do you give antipsychotic vs. benzo for anticholinergic treatment?
Benzos make you more DISINHIBITED
Antipsychotic like Haldol works