Add Med Flashcards
What aspect of opiate addiction never shows tolerance?
Constipation
DATA 2000 approves writing of prescriptions by qualified physicians for which drugs?
Schedule III, IV, V
What are the four micro-skills involved with motivational interviewing?
OARS: Open ended questions Affirmations Reflective statements Summarization
What is the key part of the brain for “fight or flight” and stress circuits that is activated by withdrawal from ALL drugs of abuse?
Amygdala
At which receptor does buprenorphine have the most activity?
Mu
Federal regulations limit first dose of methadone in OTPs to what dose?
30 mg
What is the DEA schedule for buprenorphine?
Schedule III
Synthetic cathinones are derivatives of this plant
Catha edulis
For how long are Khat leaves effective in generating the relevant high
Cathinone is only found in the fresh leaves thus they can only be chewed for several days after harvesting
What medical problems have been associated with Khat chewing?
MI, dilated cardiomyopathy and duodenal ulcers
What is the only cathinone derivative approved for use in the U.S.?
Bupropion
What drug is known as “cat and Jeff”?
Methcathinone
What cathinone derivative was developed to tx chronic fatigue, lethargy and obesity before being withdrawn from the market due to dependency and abuse?
Pyrovalerone
What is MDPV?
Methylenedioxypyrovalerone
How are cathinones usually used?
Ingestion or insufflation
What is “bombing” with regard to cathinone use?
What is “keying”?
“Bombing” is a method of ingestion whereby mephedrone powder is wrapped in cigarette paper and swallowed.
“Keying” is the practice of dipping a key into powder and then insufflating. (there are 5-8 “keys” per gram)
What are the desired effects of synthetic cathinone use?
Energy
Empathy
Openness
Increased libido
What is the most common ED symptom associated with cathinone use?
Agitation ranging to severe psychosis
What is the physiological effect of the beta-ketone on the amino alkyl chain of synthetic cathinones
Increased polarity that causes decrease penetration of the blood brain barrier.
What are the statistically significant predictors of illicit buprenorphine use?
White ethnicity, intra-nasal inhalation of pharmaceutical opioids, sx of opioid dependance, and a greater number of illicit pharmaceutical opioids used in ones lifetime.
Gender, duration of illicit pharmaceutical opioid use and lifetime opioid abuse disorder had no relationship with the odds of illicit buprenorphine use.
What is the predominant motive of illicit buprenorphine use?
Self medication of withdrawal symptoms
What is the most common illicit drug used by pregnant women?
Marijuana
What is the effect of fetal exposure to marijuana?
Does not cause clinically important neonatal withdrawal signs but may have subtle effects on long term neurobehavioral outcomes.
What percentage of pregnant females report use of illicit drugs?
4.5%
What percent of pregnant females report first trimester binge or heavy drinking?
11.9%
Among neonates exposed to opiates in utero, what percent will develop withdrawal signs?
55-94%
Neurology-behavioral abnormalities frequently occur in neonates with IU cocaine exposure. What are these and when do they occur?
Irritability, hyperactivity, tremors, high pitched cry, excessive sucking– most frequently on the second or third postnatal day.
Third trimester use of what drug has been reported to cause continuous crying, irritability, jitteriness, restlessness, shivering, fever, tremors, hypertonia or rigidity, tachycardia, tachypnea, respiratory distress, poor feeding, sleep disturbance, hypoglycemia, seizures with onset hrs to days after birth with resolution in 1-2 weeks
SSRIs
Are methadone or buprenorphine approved for use in pregnancy?
Neither methadone nor buprenorphine are approved by FDA for use in pregnant females and both are FDA category C pregnancy drugs.
What is the MOTHER study?
Maternal Opioid Treatment Human Experimental Research study
What are the causes of variability of clinical presentation of NAS?
Varies with the opioid, maternal drug hx, maternal metabolism, net transfer across placenta, placental metabolism
The incidence and severity of NAS is greatest with which drug?
Methadone> heroin> buprenorphine
What correlates with lower risk for NAS?
Pre-term and lower gestational age. This may relate to developmental immaturity of the CNS, differences in total drug exposure or lower fat depos of drug.
What is a relative contraindication for the use of naloxone for the treatment of apnea or hypo ventilation during the transition period after birth?
Maternal use of opiates. Seizures have occurred that are not responsive to phenobarbital diazepam but only resolve with morphine!
Withdrawal signs in the newborn may mimic what other conditions?
Infection, hypoglycemia, hypocalcemia, hyperthyroidism, intracranial bleed, hypoxic- ischemic encephalopathy, hyper-viscosity syndrome.
What is the predominant tool used in the U.S. to measure/determine NAS?
The modified Neonatal Abstinence Scoring System. This assigns a score based on interval observations of 21 items relating to signs of neonatal withdrawal.
What is the bioavailability of buprenorphine?
Enteral=15%
Transbuccal=27.8%
Sublingual=51%
What is the volume of distribution of buprenorphine?
97-187 L
How is buprenorphine metabolized?
Buprenorphine undergoes n-dealkylation via p450 3A4 to form norbuprenorphine. Conjugates of buprenorphine and norbuprenorphine are primarily excreted in feces.
What is the elimination half life of buprenorphine?
37 hrs after sublingual administration. The elimination half life of norbuprenorphine is 34 hrs.
Why is there no opioid antagonism when buprenorphine/naloxone combinations are given SL?
Poor sublingual and enteral bioavailability of naloxone
Does buprenorphine indicate positive for opioids on a UDS?
No.
Which drug is most similar biochemically to methadone?
Propoxyphene (Darvon)
With increasing ETOH use what is the first and most sensitive liver enzyme to elevate?
GGT
What is the most reliable bio marker for recent ETOH use?
CDT (carbohydrate deficient transferrin) will detect ETOH use > 60 g ETOH/day. Has a high specificity and high sensitivity for recent alcohol use. Since it is unavailable at most hospitals and outpatient treatment settings, it is often recommended that clinicians use combinations of other approaches to assess for alcohol use. CDT is a biomarker for chronic alcohol intake of more than 60 g ethanol/day. It is based on the fact that an averaged daily consumption of more than 60g of alcohol (about 5 standard drinks) during the previous 2 weeks increases the percentage of transferrin that has deficient carbohydrate content. Data show that a 30% reduction in CDT is consistent with a substantial reduction in alcohol intake. A positive % CDT test result is 1.7% or higher and may change up or down with increased or decreased drinking.
Which assessment tool examines a persons resistance to treatment?
RAATE
What is varenicline?
Varenicline is a potent partial agonist at α6β2 nicotinic acetylcholine receptors and is FDA-approved for the treatment of Tobacco Use Disorder.
Prolonged substance-induced psychosis is common with chronic use of:
Methamphetamine
How is acamprosate cleared from the body?
Renally cleared
Which drugs are currently approved to treat alcohol dependence?
The first medication approved for the treatment of Alcohol Dependence was disulfiram in 1949, as an aversive medication. In 1994, oral naltrexone, an opioid antagonist that decreases the reinforcing effects of alcohol, was approved in a dosage of 50 mg/day. In 2004, acamprosate, (likely) a GABA receptor agonist and NMDA receptor modulator, was approved in a dosage of 666 mg three times a day (total dose of 1998 mg/day). In 2006, a monthly, long-acting, injectable naltrexone formulation of 380 mg/month was approved by the FDA.
What are the pharmacogenomics of alcoholism?
The primary pathway of ethanol metabolism involves oxidation by alcohol dehydrogenase (ADH) to acetaldehyde. The acetaldehyde is then further oxidized by aldehyde dehydrogenase (ALDH) to acetate, which is either excreted in the urine or reincorporated into intermediary metabolism as acetyl-CoA to begin fatty acid synthesis. Acetaldehyde buildup is toxic and causes flushing and palpitations. The ALDh2*2 allele has a prevalence of between 12% and 41% in East Asia. People who carry one copy of the inactive allele are strongly protected against alcoholism (odds ratio 0.5 to 0.12), and homozygotes are almost completely protected. (Hurley TD, Edenberg HJ. Genes encoding enzymes involved in ethanol metabolism. Alcohol Res 2012;334(3):339–344.)
What characterizes cannabis intoxication?
Tachycardia (not bradycardia), tachypnea, tremors, vasoconstriction, orthostatic hypotension, conjunctival injection, and appetite increase (not appetite suppression) are the physiological characteristics of cannabis intoxication.
Which neurotransmitter is activated during drug withdrawal and mediates behavioral, pituitary and *** responses to stress?
Corticotrophin Releasing Factor (CRF)
What is the strongest predictor of AA group attendance?
Severity of alcohol related problems. Per Project Match the more severe the problem and the less social support the more likely someone will attend.
32% referred by an AA member
47% referred by a facility or a professional
Religious involvement is a poor predictor of AA affiliation.
How long does it take for normal sleep to resume after stopping marijuana use?
4-6 weeks
What is the effect of alcohol at the NMDA receptor
Antagonism
Alcohol interacts with the serotonin (5-HT) receptor system at which receptor subtype?
5-HT3
What is the mechanism for ETOH/nicotine dependence as co- morbid conditions?
Additive effects on dopamine release in nucleus accumbens
What is the mechanism for most ETOH withdrawal manifestations
Up regulation of NMDA leading to neuronal hyper excitability.
What are the four opioid receptors?
Mu, kappa, delta, OFQ/N
Which brain regions mediate the pleasurable, positively reinforcing properties of opioids?
Ventral tegimental area and nucleus accumbens
What is reward salience?
“Wanting”
The negative reinforcement model postulates what state in the neural system of the addict?
Allostasis
When does methadone withdrawal peak?
Day 5-6
What is the mechanism for LAAM mediated torsades and sudden death?
Potassium channel blockade
What is LAAM?
Levo-alpha-acetylmethadol
What is the difference between methamphetamine induced psychosis and cocaine induced psychosis?
Meth has a longer half life than does cocaine and causes a psychosis lasting up to several weeks while cocaine induced psychosis lasts only up to several days
What neural pathway accounts for relapse in cocaine or amphetamine dependent patients?
Cingulate cortex to the nucleus accumbens
What is tapentadol
Tapentadol (brand names: Nucynta, Palexia and Tapal) is a centrally acting opioid analgesic of the benzenoid class with a dual mode of action as an agonist of the μ-opioid receptor and as a norepinephrine reuptake inhibitor. Its analgesic properties come into effect within thirty-two minutes of oral administration, and last for 4–6 hours.
What is the mechanism of action of nicotine
Nicotine binds to alpha4beta2 receptors in VTA of midbrain and leads to dopamine release in the ventral striatum/nucleus accumbens (presumably leading to the pleasurable effects).
Nicotine also inhibits the activity of MAO A and B leading to decreased breakdown of dopamine.
What is LAAM?
Closely related to methadone, the synthetic compound levo‐alpha‐acetyl‐methadol or LAAM (Brand name: ORLAMM®), has an even longer duration of action (from 48 to 72 hours) than methadone, permitting a reduction in frequency of use. In 1994, it was approved as a Schedule II treatment drug for narcotic addiction. Both methadone and LAAM have high abuse potential. Their acceptability as narcotic treatment drugs is predicated on their ability to substitute for heroin, the long duration of action, and their mode of oral administration.
What is the mechanism of action of ketamine?
Ketamine acts via competitive inhibition within the NMDA receptor complex
How long does a ketamine “trip” last
About 1 hour
What is the LD 50 for ketamine?
About 30x the intoxicating dose
What effect does GHB have on growth hormone?
GHB stimulates growth hormone release up to 16 fold in humans
What is the DEA schedule for GHB
Schedule III due to some legitimate uses
Which psycho analytic theoretician posited that drug use was a substitute for a heathy interaction with a parent figure?
Heinz Kohut
Which neurotransmitter system has decreased activity during alcohol withdrawal?
GABA…..also, it’s activity is increased during intoxication as it mediates some of ETOH’s depressive effects. Levels decrease during withdrawal.
What percentage of alcohol dependent individuals achieve permanent abstinence without formal tx?
20%
What are the top 4 causes of early death in ETOH dependent persons?
In order: heart disease, cancer, accidents, suicide
Which preparation of Cannabis has the highest concentration of THC
Hashish oil (30%)
Which part of the Cannabis plant has the lowest THC concentration?
Seeds and stems
What is sensemilla and what is the contained concentration of THC?
Buds and flowering tops; 8-24%
What is the amotivational syndrome?
Chronic amorivation due to chronic marijuana use that can persist even after abstinence.
What characterizes marijuana withdrawal syndrome?
Psychological, not physical, symptoms: craving, irritability, anxiety, depressed mood, insomnia
What effects does marijuana have in the endocrine and reproductive system?
Inhibits LH, prolactin, and GH but no effect on FSH. Decreases testosterone in males.
Can cause LBW infants. Highest consumption in women–>lowest BW infants.
Which acts on the vesicular monamine transporter system; cocaine or amphetamines?
Amphetamine
Which TCA has been studied most extensively as a treatment for cocaine dependence?
Desipramine…….but it may be most useful only in patients with co-occurring depression
What is contingency management therapy?
A highly structured incentive based therapy that has been successful for initiating abstinence and preventing relapse for stimulant dependent patients. It uses a system of privileges and nondrug reinforcers to counter and decrease behavior maintained by drug reinforcers.
What happens to brain glucose metabolism in early versus late cocaine withdrawal?
Early: glucose metabolism increases
Late: glucose metabolism decreases
What % of America’s prison population are estimated to have ETOH and drug abuse spectrum disorders?
70%
T or F
Alcohol and other drugs of abuse seem to cause medical problems in women at a younger age than men
True
What is the lifetime prevalence of co-occurring psychiatric disorders in women; in men, with ETOH abuse?
Women: 72%
Men: 57%
When major depression and ETOH dependence co-exist, the mood disorder is primary more often in women (2/3) versus men (1/3)
What is pseudoaddiction?
Drug seeking behavior that resembles a substance use disorder but is iatrogenically caused by inadequate pain treatment.
What is the lifetime incidence of substance use disorders in physicians?
8-15%. This is no higher than for other socioeconomically matched professionals
Which 2 medical specialities have the highest risk for participation in a physician health program?
ER and anesthesia
What percentage of states have PHPs?
All 50 states
What is the most frequently abused benzodiazepine?
Alprazolam (Xanax)
Does buprenorphine increase QTc?
Buprenorphine does not increase QTc!
Dextromethorphan is metabolized to what substance?
Dextrorphan; a weaker sigma opioid agonist and STRONGER NMDA antagonist than dextromethorphan.
What are the effects associated with DXM?
Significant serotenergic properties:
1- increase synthesis and release of serotonin;
2- inhibit re-uptake;
3- risk of serotonin syndrome
What is the major excitatory neurotransmitter in the CNS?
The amino acid L-glutamate
What is the primary CNS inhibitory neurotransmitter?
GABA
What happens to L-glutamate when benzodiazepines are reduced?
Increased activity of the glutamate system is seen. Rebound anxiety, increased muscle tone, sensory disturbances, tremors, and seizures can be related to the increased glutamate
Which centrally acting opioid has been associated with the development of serotonin syndrome and/or angioedema?
Tapentadol (Nucynta)–contraindicated in pts taking MAOIs.
Which p-gp inhibitors may increase the absorption of morphine by approximately 2-fold?
Quinidine, azithromycin, verapamil
What effect does CYP 3A4 inhibitors have on opioids?
Increase blood levels
How long for opioids to reach “steady state”?
3 days
What part of the brain is primarily involved with
analgesia?
Peri-aqueductal gray matter
Which portion of the brain is activated in withdrawal?
Locus ceruleus
What drug of abuse is legal within the Native American Church?
Mescaline/peyote; Ayahuasca
Which state has no Prescription Drug Monitoring Program (PDMP)?
Missouri
What is SBIRT?
Screening, Brief intervention, Referral to Treatment– is an evidence-based practice used to identify, reduce, and prevent problematic use, abuse, and dependence on alcohol and illicit drugs. The SBIRT model was incited by an Institute of Medicine recommendation that called for community-based screening for health risk behaviors, including substance use.
What % of neonates with in utero exposure to opioids will develop Neonatal Abstinence Syndrome?
50-81%
When does NAS have its onset?
1-72 hours
What characterizes Fetal Alcohol Syndrome?
Microcephaly, epicanthal folds, flat mid-face, smooth philtrum, low nasal bridge, small eye openings, short nose, thin upper lip, reduced intelligence
What is the mortality of ETOH withdrawal?
2%
What characterizes Korsakoffs psychosis
Antegrade amnesia
Confabulations
What is the mechanism of action of nicotine?
Nicotinic acetylcholine receptor agonist
What is the mechanism of action of Savinorin A?
Kappa opioid agonist
What are the components of the COWS (Clinical Opiate Withdrawal Scale)?
Pulse, sweating, restlessness, pupil size, bone/joint aches, runny nose/tearing, GI upset, tremor, yawning, anxiety/irritability, goose flesh.
Score items 1-5. Mild= 5-12; moderate= 13-24, severe over 36
Where is ETOH absorbed primarily
Duodenum
Each of the following drugs has an active metabolite except: 1- Methadone 2- Codeine 3- Heroin 4- Tramadol 5- Buprenorphine
Methadone
Horizontal nystagmus is associated with
PCP- esp in stage 1 intoxication
Have PDMPs been shown to reduce OD deaths
Not as yet
For which analyte is saliva drug testing not adequate or reliable?
THC
What is Truvada?
Pre-exposure prophylaxis for HIV
What is the brand name for oral naltrexone?
Revia
What are the four drugs currently approved to treat alcoholism?
Currently, there are four medications that have been approved by the Food and Drug Administration (FDA) for use in treating alcohol dependence: Disulfiram (Antabuse®), oral naltrexone (Revia®), acamprosate (Campral®), and an intramuscular (IM) once-a-month naltrexone injection (Vivitrol®)
What is the COMBINE study?
The largest known controlled pharmacotherapy clinical trial for treating alcohol dependence, i.e., the COMBINE study, which was supported by the National Institute on Alcohol Abuse and Alcoholism. This study evaluated the efficacy of specific pharmacotherapies, behavioral or psychosocial interventions, and their combinations for the treatment of alcoholism.
When major depression and alcoholism co-exist in women how often is the depression primary?
2/3 of the time
What factors increase the risk of a missed diagnosis of alcoholism in hospitalized patients?
Better education, higher income, private insurance, female
What is the lifetime prevalence of psychiatric co morbidity in females with alcohol abuse according to the National Comorbidity Survey (NCS)
NCS found a lifetime prevalence of other co-occurring psychiatric disorders to be 72% in women with alcohol abuse; 57% in men.
Methadone maintenance in pregnant females has been beneficial in which regards
Reduced fetal mortality Reduced fetal morbidity Reduced pregnancy related complications Reduced maternal mortality No known teratogenicity
What % of prison inmates are substance dependent at the time of their arrest?
65%
How does ADA treat drug abuse differently from ETOH abuse?
Current ETOH use, if associated with impairment that limits one or more major life activities, does not disqualify one from protection under ADA– on the job drinking is not protected. Individuals with drug addiction are protected from discrimination only if they are abstinent and engaged in rehabilitation or have completed it.
What is the most useful intervention shown to reliably reduce alcohol use among teens and college students
Raising the legal age to 21
What is the activity of ETOH at the NMDA receptor?
Antagonist at NMDA
What are the CAGE questions?
C-Have you ever felt you needed to Cut down on your drinking?
A-Have people Annoyed you by criticizing your drinking?
G-Have you ever felt Guilty about drinking?
E-Have you ever felt you needed a drink first thing in the morning (Eye-opener) to steady your nerves or to get rid of a hangover?
What is the sensitivity and specificity of CAGE?
CAGE test scores ≥2 had a specificity of 76% and a sensitivity of 93% for the identification of excessive drinking and a specificity of 77% and a sensitivity of 91% for the identification of alcoholism.p
What are the FDA drug pregnancy categories?
Category A: Controlled studies show no risk or find no evidence of harm.
Category B: Animal studies show no risks, but there are no controlled studies on pregnant women.
Category C: Animal studies have shown risk to the fetus, there are no controlled studies in women, or studies in women and animals are not available.
Category D: There is positive evidence of potential fetal risk, but the benefits from use in pregnant women may be acceptable despite the risk (i.e. life threatening condition to mother).
Category X: Studies in animals or human beings have demonstrated fetal abnormalities, or there is evidence of fetal risk. The drug is contraindicated in women who are or may become pregnant.
What is one standard drink
14 grains or 0.6 oz of pure ETOH
What are three direct tests for use of ETOH
Ethyl glucuronide
Ethyl sulfate
Phosphatidylethanol
What is the endogenous cannabinoid neurolo-transmitter!
Anandamide
What is the endogenous neurotransmitter for hallucinogens and MDMA
Serotonin
What part of the brain is involved with anti-reward
Habenula
What part of the brain is involved with interception?
The insula.
A number of functional brain imaging studies have shown that the insular cortex is activated when drug abusers are exposed to environmental cues that trigger cravings.
Research published in 2007 has shown that cigarette smokers suffering damage to the insular cortex, from a stroke for instance, have their addiction to cigarettes practically eliminated.
The mnemonic “REDS” applies to what form of therapy?
Motivational interviewing:
R oll with resistance
E xpress empathy
D evelop discrepancy
S upport self-efficacy
What is the mission of Al-Anon
“Strength and hope for friends and families of problem drinkers”
With regard to smoking and ETOH use what happens to most users post-partum
Most return to pre-partum levels of use within 6-12 months.
What screening tool is validated for screening in pregnancy and post-partum?
The "four P's": Pregnancy Past Partner Parents
Which screening tool is validated for adolescents?
CRAFFT
What is the endogenous ligand active at the mu receptor?
Beta endorphins
What is the endogenous ligand active at the delta receptor?
Enkephalins
What is the endogenous ligand active at the kappa receptor?
Dynorphins
What percent of the vulnerability to addiction is attributable to genetic factors?
40-46%
What % of people with psychiatric disorder exhibit substance abuse disorders?
30%
What CB1 antagonist, initially approved in Europe for the treatment of obesity has seen it’s use limited by the onset of depressive sx with an incidence of suicide, which has prevented its approval in the U.S.?
Rimonabant
“Substance-Related Disorders” has been renamed to what in the DSM-5?
Substance-Related and Addictive Disorders”
What is the only non drug addiction included in the DSM-5 category “Substance-Related and Addictive Disorders”?
Gambling disorder
What are the determinants of incidence and severity of Neonatal Abstinence Syndrome?
1- NOT dose or duration of treatment;
2- AA allele is more severe than AG or GG allele SNP of Mu opioid receptor gene OPRM1;
3- Epigenetics: increased methylation at 3 sites of mu opioid receptor gene was associated with more severe NAS
What is the COMT SNP (val158met) associated with?
Increased heroin addiction and type 2 alcoholism–but findings not universally accepted
DSM-5 moved to what form of diagnosis
Nonaxial
What criterion was dropped and which one was added for DSM-5?
Legal problems was dropped
Craving was added
Which opiates cause seizures?
Meperidine (Demerol)
Propoxyphene (Darvon)
Pentazocin (Talwin)
Tramadol (Ultram)
Which drugs cause amphetamine false +
Trazadone Bupropion Selegeline Sertraline Chlorpromazine Labetalol Ranitidine
What drugs cause false + for PCP
Venlafexine
Dextromethorphan
Following ingestion of the same amount of ETOH what is the percentage difference in BAC between females and males?
Females have 20-25% higher BAC
Which CYP enzyme is involved in the metabolism of ETOH?
CYP2E1
What is the mechanism of action for naloxone and naltrexone with regard to reducing ETOH consumption?
ETOH increases the release of opioid peptides making opioid antagonists a mainstay in treating ETOH addiction
What is the lifetime prevalence of ETOH dependence?
13%
Type I Cloniger and type A Babor ETOH classifications are similar. What are those similarities?
1- Later onset ETOH related problems (>25 yo);
2- Fewer childhood behavior problems;
3- Relatively mild ETOH related issues with fewer hospitalizations;
4- Lower degree of novelty seeking coupled with a preference toward harm avoidance;
5- Less tendency to run in families
What factors increase the likelihood of developing dependence on benzodiazepines?
Female gender, advanced age, cognitive impairment, panic disorder, presence of suicidal thoughts as well as longer duration of treatment and use of higher doses
What is the most common subtype CYP enzyme involved in metabolism of benzos?
CYP 3A4
What is the mechanism of action for benzodiazepines?
They are direct GABA agonists. They do not activate the GABA receptor themselves but rather function by enhancing the binding of GABA to the receptor and thereby lead to an increased frequency of the opening of the central chloride channel.
What are the “Z” drugs and how do they differ from benzos in their mode of action
Zolpedem; zopione; eszopiclone and zakepon
Their amnestic effects are less pronounced and tolerance is less likely to develop
What are the common CYP 3A4 inhibitors?
All “avir” drugs; macrolide ABx; azole antifungals; nefazadone; fluoxetine; cimetidine; grapefruit juice
What are the common CYP inducers?
Rifampin; rifabutin; carbamazepine; phenobarbital; phenytoin; St. Johns wort
What is the half life of diazepam and the half life of its active metabolite?
Diazepam: 28-54 hours
Active metabolite: 30-100 hours
What is the DEA schedule for GHB
Schedule I; its approved formulation is III
What are the pro-drugs for GHB?
Gamma butyrolactone;
1,4 butanediol
GHB is both a precursor and degradation product of what inhibitory neurotransmitter?
GABA
Unlike GABA however GHB readily passes thru the BBB
What effect does GHB have on dopamine?
High concentrations—–>inhibit dopamine release
Low concentrations—-> stimulate dopamine release
What are the long term effects of GHB use?
Animal models suggest that GHB causes lasting deficits in memory and social interaction and increases in anxiety due to long term neuroadaptations in brain oxytocin systems
What is the ratio of blood to breath concentration of ETOH
2100:1
A breath level of 0.1 grams per 210 L is equivalent to a whole blood ETOH of 100 mg/dL
Which drug of abuse has the most frequent false + screens?
Amphetamines
Is Ritalin detected on confirmatory testing for amphetamine or methamphetamine?
No. Because methylphenidate is not metabolized to amphetamine or methamphetamine.
True or false; participation in a DTC ( Drug Treatment Court) is voluntary on the part of the offender
True
What is motivational interviewing?
MI is a non-coercive cognitive and experiential method whereby the therapist helps the patient explore and resolve ambivalence in order to increase internal motivation to change behavior.
What did the Epidemiologic Catchment Area study find?
Bipolar disorder was more strongly associated with substance use disorders (other than nicotine use disorders) than was schizophrenia.
What characterizes cognitive behavioral therapy?
Collaborative and non-paternalistic;
Highly structured;
Home work assignments;
Time limited (12-24 weeks);
Therapist is active and non-neutral
What percent of EAP referrals are self- referrals?
90%
What is the relative annual risk of death from heroin addiction?
6-20 fold
What is the usual daily dose of methadone?
60-100 mg daily
What are the contraindications for nicotine replacement therapy?
Pregnancy, unstable angina, nursing
What is the half life of nicotine?
2 hours
What drug has shown some efficacy as a pharmacotherapy for cannabis dependence?
Gabapentin
What is “pyramiding”?
Taking anabolic steroids in increasing doses in cycles alternating with drug-free periods
The use of transcranial magnetic stimulation has been studied for which addiction?
Stimulant addiction
What is a positive CAGE questionnaire?
Affirmative response to 2 questions —->7x more likely to be ETOH dependent
Which opioids are most likely to be diverted and used in cases of nonmedical use?
Oxycodone and hydrocodone
At what age should clinicians start implementing Alcohol Screening and Brief Interventions in adolescents?
9 years old
Untreated heroin dependence during pregnancy increases the risk for what problems?
Fetal growth retardation
Abruptio placenta
Preterm labor
Fetal death
When rotating from another opioid, the methadone equianalgesic dose should be reduced by how much?
80-90%
Individuals who are “almost gay” or “almost straight” tend to have higher rates of substance abuse disorders than do pure homosexuals
True
Which medication can be used to treat opioid dependence and alcohol dependence simultaneously?
Naltrexone
What does the CIWA-Ar assess?
Alcohol withdrawal severity
True/false
PDMPs reduce opioid overdose deaths
False
Based on CFR-42, what is the status of methadone and buprenorphine with regard to listing in the ODMP
They are not listed
How should pregnant females on methadone or buprenorphine be managed?
Pregnant opioid addicted women maintained on methadone or buprenorphine should continue their dose and NOT taper due to high relapse rates. It is common to need dose increases with methadone, but NOT buprenorphine in the 2nd and 3rd trimesters. In HIV+ women, breast feeding is encouraged with either methadone or buprenorphine.
What are the differences between the “LOT” benzodiazepines and diazepam?
Diazepam has a longer half-life with active metabolites and is actively metabolized via microsomal oxidation. The LOT benzodiazepines are metabolized by glucuronidation conjugation which is more rapid with inactive metabolites.
How long can the disruption of sleep patterns persist following cessation of alcohol use?
18 months
Bipolar disorder is more likely to increase the risk of developing a substance abuse disorder during adolescence if it occurs during childhood rather than adolescence.
T or F
False
What type of hallucinations are associated with MDA and MDMA?
Auditory NOT visual
What is “telescoping”?
Rapid acceleration of use
What approach to treatment of amphetamine addiction has been supported by several clinical trials?
Agonist substitute with a stimulant plus naltrexone
What part of the brain is involved in chronic alcoholism or dependence?
Core of the NA
What are the relative contraindications for Antabuse?
CAD, active liver disease, hx of psychotic reaction, impaired renal function
T or F
Buprenorphine for opioid addiction is less effective than methadone for treatment retention m
True
What is “stacking”?
Using several types of anabolic steroids simultaneously
What is the mechanism of action of bupropion?
Reuptake inhibitor of dopamine in nucleus accumbens and of norepinephrine in locus ceruleus. Also acts as weak antagonist of alpha4 beta2 nicotinic receptors
What is the FDA drug schedule for anabolic steroids?
Schedule III
What is the difference in effect on the chloride channel between benzodiazepines and barbiturates?
Benzodiazepines increase the frequency of opening of the chloride channel while barbiturates increase the duration of opening.
What are the most frequently abused benzodiazepines?
Alprazolam> clonazepam> lorazepam > diazepam
Where do benzodiazepines and barbiturates bind on the GABA receptor?
Benzodiazepines bind at the alpha and gamma subunits while barbiturates bind only the alpha subunit.
What is the FDA drug schedule for anabolic steroids?
Schedule III
What is the difference in effect on the chloride channel between benzodiazepines and barbiturates?
Benzodiazepines increase the frequency of opening of the chloride channel while barbiturates increase the duration of opening.
What are the most frequently abused benzodiazepines?
Alprazolam> clonazepam> lorazepam > diazepam
Where do benzodiazepines and barbiturates bind on the GABA receptor?
Benzodiazepines bind at the alpha and gamma subunits while barbiturates bind only the alpha subunit.
What is the protocol for non-opioid treatment of opioid withdrawal?
Clonidine 0.2 mg 3x daily or lofexidine 0.2 mg BID for 10 days for heroin and 14 days for methadone.
What is the role for beta blockers in treatment of ETOH withdrawal?
Improvement in VS; reduction in craving
What percentage of women who use THC develop galactorrhea and what is the mechanism?
20% develop galactorrhea which results from THC causing decrease in prolactin.
What is the effect of THC on FSH?
No effect
Which hormones are inhibited by THC?
Prolactin, LH and GH
Smoke “ice” amphetamine causes euphoria that lasts how long?
12-24 hours
What is the “K hole”
State of helplessness and lack of coordination associated with ketamine intoxication
What is the effect of nicotine withdrawal on heart rate?
Bradycardia
What might be the effect of suddenly stopping opioids with regard to psychosis?
Opioids have antipsychotic properties and suddenly stopping them may precipitate psychosis.
What is the relative annual risk of death due to heroin addicts?
6-20 fold increase