RECALL: SUDs + Schizophrenia + Anxiety Flashcards
“10- 1 day, myalgias, muscle ache, fatigue, diaphoresis, nausea, diarrhea. Withdrawal in opiates, what most likely to use to improve withdrawal sx?
a. Clonidine
b. Buprenorphine
c. Diazepam “
“B)
Buprenorphine is initiated when pt is in opioid withdrawal and it will help w/d sx.
Clonidine only helps for auntonomic symptoms.
should be used in conjuction with other meds such as loperamide and analgesics”
what med has best efficacy in doctors for OAT
naltrexone
“11- Anesthesiologist opiates use disorder. Abstinent. Wants to help him stay abstinent. Does not want a replacement therapy.
a. Naltrexone
b. Naloxone
c. Buprenorphine
d. Somehting else”
“A) Naltrexone
Best efficacy in doctors. Naloxone is short-acting. Buprenorphine IS replacement therapy.
Do not put someone on OAT (opiod replacement) if they are not currently taking opioids as you are making them dependent (exceptional circumstances you can). OAT will also impair physician work.”
how does the mechanism of action of cocaine compare to the mechanism of action of amphetamines
cocaine blocks DAT only
amphetamines block DAT and ALSO reverse its function + trigger release of dopamine in vesicles
“113. Nicotine dependence:
a. Nicotine is an indirect agonist of the dopamine receptor
b. Nicotine is a selective agonist of the nicotinic cholinergic receptor
c. Nicotine is a selective antagonist of the nicotinic cholinergic receptor
d. Nicotine is a partial agonist and antagonist of the acetylcholine receptor”
“A) Nicotine is an indirect agonist of the dopamine receptor = TRUE
DA, reward, VTA… mechanism of dependence
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2946180/
B) FALSE.
This is the MoA (although see D)
Selective agonist at nicotinic cholinergic receptor
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2946180/
- KSS 11e p682
C) FALSE
D) FALSE.
But is this the MoA?
KS Full 10e p1345
““nicotine may actually act as much as an antagonist as an agonist at the nicotinic acetylcholine receptor”” . maybe the partial part rules this out.”
“114) what is most indicative of Amphetamine intoxication?
a) persecutory Delusions
b) hallucinations
c) other options I cannot remember, sorry.”
“A) Persecutory delusions
Perceptual changes during intoxication present as paranoia in 50-70% of cocaine users and 30% of meth users. If paranoia/ psychotic features are beyond what would be expected of an intoxication to stimulants then stimulant-induced psuchotic d/o is appropriate. “
what is first choice treatment med for AUD
naltrexone, unless contraindicated (i.e liver failure, on opioids)
what are first line and second line meds for AUD
first line: naltrexone, acamprosate
second line: topiramate, disulfram
LSD act on which neurotransmitter
serotonin
which is WORSE for the kidneys, acamprosate or naltrexone?
acamprosate is WORSE–> AKI is a side effect, contraindicated in severe renal impairment and precaution in moderate renal impairment
(note that renal impairment is also a precaution in naltrexone but is not as bad as acamprosate)
what is a contraindication to acamprosate use
renal failure
list predictors of relapse after liver transplant for AUD
Lack of social supports, psychiatric comorbidity, cigarette smoking, and noncompliance with pre-transplant care were predictos of relapse after transplant.
(the abstinent for 6 months prior to transplant rule is no longer true)
which AUD med is contraindicated in acute hepatitis/liver failure
naltrexone
Can still be used in mild liver disease. Dose adjustment not generally necessary for mild impairment. Contraindicated in acute hepatitis or liver failure.
Can still use naltrexone with liver enzymes 3-5x normal, but monitor for worsening
“157. CL post-op patient after cardiac procedure who is presenting with confusion every time the anesthetist tries to decrease the propofol and midazolam. What information must you obtain? (2013)
a. History of alcohol use
b. Past medical history
c. Past psychiatric history
d. Past personal history
e. Cognitive functioning”
“A) History of alcohol use = TRUE
Risk of alcohol withdrawal
A) TRUE
B) FALSE. Not at as immediately important.
C) FALSE. Not at as immediately important.
D) FALSE. Not at as immediately important.
E) FALSE. Not at as immediately important.
Propofol works on GABA, need higher doses for alcoholics:
https://www.openanesthesia.org/propofol_mechanism_of_action/#:~:text=Like%20most%20intravenous%20anesthetics%2C%20Propofol,resulting%20hyperpolarization%20of%20cell%20membranes.
Midaz works on GABA:
https://chemm.nlm.nih.gov/countermeasure_midazolam.htm#:~:text=Midazolam%20binds%20to%20the%20GABA,and%20reduction%20of%20seizure%20activity.
”
“16. Man with alcohol use disorder wants to quit. Had gastric varices and severe liver damage. What is your choice for pharmacotherapy for AUD?
A) Naltrexone
B) Acamprosate
C) Pregabalin”
“B) acamprosate = true
Naltrexone contraindicated due to severe liver disease”
“16. What is minimum optimal time for treatment of substance use disorders?
a. 1 month
b. 3 months
c. 6 months
d. 12 months”
“B) 3 months
Qbank says 3 months. & Ottawa D5_Crockford says 3 months – typical amount of time to change behaviours
[WHO International Standard 2017, https://www.who.int/substance_abuse/activities/msb_treatment_standards.pdf]
For long-term residential treatment, evidence >3 months → better outcomes
[NIDA, https://www.drugabuse.gov/publications/principles-drug-addiction-treatment-research-based-guide-third-edition/frequently-asked-questions/how-long-does-drug-addiction-treatment]
Less than 3 months limited effectiveness. MMT 12 month minimum.”
are kidney stones a contraindication for acamprosate
no
what medication, used to AUD, causes kidney stones
topiramate
“19. In MDMA, the neurotransmitter responsible for its hallucinogenic effect is:
a. Glutamate
b. Serotonin
c. Norepinephrine
d. Dopamine”
“B) Serotonin (psychogenic effects)
5HT & 5HT2A – taken up presynaptically by 5-HT transporter & releases 5-HT from presynaptic stores. Also acts as reuptake inihibitor.
”
“24. You meet a 25 year-old male who had problems with cocaine use in the past. He has resumed intake of cocaine and thinks this is not a problem. He says:
“I don’t think it’s a problem. It used to be a problem but now I only take it weekly with my friends. However, it’s true that I could lose my good job if my boss finds out. Maybe I should stop…”
In which stage of change is this patient?
a. Precomtemplation
b. Contemplation
c. Preparation
d. Action”
“B) Contemplation = TRUE
PRECONTEMPLATION - no intention to act foreseeable future (6 mo), often unaware behaviour is problem/negative consequences, underestimate pros of changing, oto much emphasis on cons of changing
CONTEMPLATION - intending to start healthy behavior in foreseeable future (6 mo), recognize behavior may be problematic, more thoughtful and practical consideration of the pros and cons of changing behavior, may still be ambivalent
PREPARATION (Determination) - ready to act next 1 mo, start to take small steps, and believe changing behavior can lead to healthier life.
ACTION - recently changed their behavior (within past 6 mo), intend to keep changing
MAINTENANCE - sustained change for a while (> 6 mo) and intend to maintain change, work to prevent relapse
TERMINATION - no desire to return to unhealthy behaviors, are sure won’t relapse, rarely reached .: people tend to stay in maintenance stage
”
what is a way to remember how naltrexone and acamprosate are metabolizes
naLtrexone = Liver
aCamprosate = K(C)idney
“41. Man presents to ER with substance intoxication. After 12 hours of observation, he is still severely agitated, hallucinating, diaphoretic and has a high BP. What is the most likely substance? (no mention of nystagmus, dilated pupils)
A) Cocaine
B) Phencyclidine
C) Amphetamines
D) Psilocybin”
“C) Amphetamines.
Meets all criteria of stimulant intox with perceptual disturbances and half-life of amphet can be 9-24h so longer course more in line with amphet use. If someone presents to ER with this presentation, it’s probably meth more than any other drug.
avg length of CM intox is 6-8h, then cocaine 0.5-1h
A) FALSE - Effect rarely lasts beyond 2h
B) FALSE - Toxidrome does not match: In DSM: (behav changes (impulsive/violent), nystagmus, htn, numbness, ataxia, dysarthria, rigidity, sz, hyperacusis) – no mention of psychosis, diaphoresis…? Psychoactive component of PCP is short-lived (1-3h)
C) TRUE
D)FALSE- Toxidrome similar to PCP - not to the one presented”