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48 Cards in this Set

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(1) use of a drug in a way that differs from the accepted patterns in a society. (2) use of drugs in a manner which causes major and continuing problems in life.
Drug Abuse
Continued use of a drug DESPITE adverse medical or social consequences.
Compulsive Drug Use (Dependence)
drug needed for optimal state of MENTAL well being; Minimax principle drug minimizes discomfort or maximizes pleasure.
Psychological dependence
An altered physiological state produced by repeated use of a drug, which requires continued use of drug in order to prevent an abstinence or withdrawal syndrome.
Physical Dependence
The ability of one drug to block the withdrawal syndrome of another drug and to maintain the dependent state.
Cross Dependence
Decreased response to a given dose of drug after repeated doses.
Tolerance
Decreased response to receptor
Pharmacodynamic tolerance
Increased metabolism
pharmacokinetic tolerance
Tolerance to a class of drugs
Cross-tolerance
What factors contribute to compulsive drug abuse?
1.escape from reality
2. obtain a sense of euphoria
3. escape high levels of anxiety
4. gain membership in a social group
5. relieve physical pain
6. bolster a poor self image
7. enhance introspection or creativity
8. have a novel experience
12 24 hrs restless sleep, DILATED PUPILS, anorexia, piloerection, irritability, tremor.
What drug class withdrawal?
Opiods
How long does opioid withdrawal symptoms last?
7-10 days. Abstinence syndrome may last for months.
Withdrawal is tramatic but SELDMON life threatening.
RX for opiod withdrawal?
1. Methadone maintence (levomethadyl also)
2. Naloxone
3. Clonidine (A2 agonist)
4. Buprenorphine (partial opiod agonist)
Describe tolerance to benzos, methaqualone, GHB, and ketamine.
Chronic intox results in pharmacokinetic and pharmacodynamic tolerance. Considerable tolerance develops to the sedative and intoxicating effects of these drugs but NOT to the lethal effects.
Withdrawal symptoms in benzos, ghp, ketamine?
Mild paroxysmal EEG abnormalities, REM rebound, insomnia, anxiety. Moderate tremulousness and weakness. Severe seizures and delirium.
Is withdrawal from benzo's, ghp, and ketamine LETHAL?
potentionally lethal
Is withdrawal from benzo's, ghp, and ketamine LETHAL?
Lethal.
Is withdrawal from benzo's, ghp, and ketamine LETHAL?
Yes. Can result in status epiletpicus
What type of tolerance develops from barbs, benzos, GHB, and ketamine?
1. Chronic use: pk and pd tolerance
2. Tolerance to sedative and intoxicating effects, but NOT TO LETHAL effects
Does tolerance develop for amphetamines and cocaine?
1. Tol to Desired effects of amphetamines
2. Tol to some effects of cocaine, but sensitiziation to other effects.
Does physical dependence develop for amphetamines, cocaine?
PD strong for cocaine, but the withdrawal signs are so mild that they aren't recognized (fatigue, increased appetite, depression w/suicidal ideation)
Does tolerance develop to nicotine?
Yes, but not to ALL effects.
What are withdrawal signs of nicotine?
Irribility, anxiety, restlessness, sleep disturbances, headaches, etc.
Does tolerance develop to marijiana?
Not really, they sensitivity may INCREASE.
Withdrawal of marijiana?
Irritability, restlessness, nervousness, decreased appetite, insomnia.
Tolerance and withdrawal effects of LSD, psilocybin, mescaline, and Salvia (hallucinogens)?
1. Tolerance develops to behavioral effects
2. Physical dependence and withdrawal signs DO NOT occur.
Tolerance, withdrawal, or physical dependence of inhalants?
No tolerance, withdrawal, but does produce PSYCHOLOGICAL dependence.
Why use methadone for opioid withdrawal?
Methadone has a big T1/2. This will slowly wean pts off opiods while decreasing withdrawal effects. Levomethadyl is also available.
What role does buprenorphine have in opiod withrdrawal?>
It is the first drug to maintain opioid dependence OUTSIDE of specialized clinics. Physicians must be certified by FDA to prescribed.
What's the relationship of tolerance and physical dependence?
1. T and PD contributed to drug abuse.
2. T to euphoria-->more drug--> more PD
3. The more PD the individual, the more drug they have to use to avoid adverse WITHDRAWAL syndrome.
What are symptoms of opiod abuse?
1. No direct toxicity to organs
2. W/D symptoms begin 6-12 hours after last dose of heroin
(lacrimation, sweating, DILATED PUPILS)
3. W/D is not life threatening.
What are the symptoms of CNS depressants (barbs, BDZ, flunitrazepam, GHB, and ketamine?
1. May not be signs of chronic use
2. Mild intox, rapid mood changes, slurred speech, nystagmus, diplopia, vertigo.
3. Withdrawal--opposite effects include anxiety, tremors, seizures, STATUS EPILEPTICUS (LETHAL)
A patient presents with euphoria, increased energy, libido, motor restlessness, paranoia, hallucitnations (tactile and visual.) What are they taking?
Amphetamines or Cocaine
What are adverse affects of ACUTE use of amphetatmines/cocaine/MDMA
anorexia, insomnia, tachycardia, tachypnea, HTN, hyperthermia, seizures.
Which lasts longer, methamphetamines or cocaine?
Methamphetamine.
Why do long users of intranasal cocaine present with septal damage?
Cocaine is a vasoconstrictor and causes necrosis of nasal septum.
What are the side effects of chronic cocaine use?
arrhythmias, MI, myocarditis, high output CHF, dilated cardiomyopathy, intercerebral hemorrhage, aortic dissection, DIC.
Memory loss, learning impairment, motor deficits, DENTAL DECAY, and psychiatric disorders.
Chronic methamphetamine use (Meth mouth)
What are symptoms of nicotine use?
Reinforcing properties, alerting and muscle relaxing effects, euphoria, mortality.
What are the effects of marjiana use?
1. Apathy, loss of interest (Amotivational Syndrome.)
2. No evidence of Irreversible changes in brain.
3. Effects of young adolscents may be serious.
What are the effects of using inhalants?
1. Euphoria, hallucinations, short duration of action = frequent use, psychological dependence,
What are the effects of industrial solvents and flurocarbons as inhalants?
IS: brain, liver, kidney damage, permanent PNS damage, bone marrow suppression, pulmonary dz.
FC: Sudden Death d/t asphyxiation or ventricular arrhythmias.
What makes one person more likely to use drugs compulsively or non compulsively?
1. Vulnerability (Genetics and Environment).
2. Impulsive nature, rebelliousness, low frustration tolerance, friends, quality of life.
What is the treatment of withdrawal of barbs, BDZ, GHB, ketamines?
Long acting BZD and slowly withdraw.
What is the treatment of withdrawal of amphetaines, cocaine, and MDMA?
1. Drug treatment to prevent abuse has LITTLE success.
2. anti-cocaine vaccine?
Treatment of nicotine withdrawal (3)?
1. Nicotine replacement (gum, patch, spray)
2. Bupropion and other AD's to stop cravings.
3. Varenicline
What is Varenicline?
Partial nicotinic rec agonist. Relieves cravings and blocks pleasurable effects if people do smoke. MOST EFFECTIVE AND WEIGHT GAIN!
What is the part of the brain that is invovled with reward system and the final NT?
1. Nucleus accumbens and insula.
2. dopamine!