* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project
Download 2 MB 2017 Addiction Introduction - Northeast Ohio Nurse Practitioners
Pharmacokinetics wikipedia , lookup
Drug discovery wikipedia , lookup
Pharmacogenomics wikipedia , lookup
Pharmacognosy wikipedia , lookup
Pharmaceutical industry wikipedia , lookup
Prescription costs wikipedia , lookup
Drug interaction wikipedia , lookup
Neuropsychopharmacology wikipedia , lookup
Polysubstance dependence wikipedia , lookup
Alcohol and Other Drug Abuse 101 David L. Brager PMHNP Addiction Fellow Northeast Ohio Nurse Practitioner Conference April 27, 2017 Cleveland, Ohio 1 ACKNOWLEDGENT: Thank you and special recognition to: Christina M. Delos Reyes, MD Medical Consultant For her assistance and contribution to this program. Disclosure Statement: No conflicts to disclose. 2 Learning Objectives Part I. What is addiction? What are substance use disorders? Part II. What are the drugs of abuse? What are their effects? 3 4 Explanatory Models of Addiction Moral wrong Spiritual empty Psychological impulse control Behavioral habit Medical disease 5 Medical model of addiction Sick person seeking wellness SUDs as chronic diseases Biological basis Identifiable signs and symptoms Predictable course and outcome Treatment improves outcomes Lack of treatment may lead to morbidity and mortality 6 Medical model of addiction A chronic relapsing disease of the brain Drugs change brain structure and function Brain changes can be long lasting and lead to harmful behaviors Characterized by compulsive drug seeking and use despite harmful consequences 7 8 9 How Does the Brain Become Addicted? Typically it happens like this: A person takes a drug of abuse, activating the same brain circuits as do behaviors linked to survival, such as eating, bonding and sex The drug causes a surge in levels of a brain chemical called dopamine, which results in feelings of pleasure; the brain remembers this pleasure and wants it repeated 10 How Does the Brain Become Addicted? Just as food is linked to survival in day-to-day living, drugs begin to take on the same significance for the addict “Survival Salience” The need to obtain and take drugs becomes more important than any other need, including truly vital behaviors like eating The addict no longer seeks the drug for pleasure, but for relieving distress 11 How Does the Brain Become Addicted? Eventually, the drive to seek and use the drug is all that matters, despite devastating consequences Finally, control and choice and everything that once held value in a person's life, such as family, job and community, are lost to the disease of addiction 12 Influence Quantity / Frequency LIFESTYLE CHOICES Interact With BIOLOGICAL FACTORS Influence SOCIAL FACTORS PSYCHOLOGICAL FACTORS 13 What brain changes are responsible for such a dramatic shift? (1) Disrupted dopamine activity Dopamine release is needed in order to experience pleasure and motivate our responses to natural rewards of everyday life, such as food Drugs produce very large and rapid dopamine surges and the brain responds by reducing normal dopamine activity Eventually, the disrupted dopamine system renders the addict incapable of feeling any pleasure even from the drugs they seek to feed their addiction 14 What brain changes are responsible for such a dramatic shift? (2) Altered brain regions that control decision- making and judgment Resulting lack of control leads addicted people to compulsively pursue drugs, even when the drugs have lost their power to reward Drug addiction is insidious because it affects the very brain areas that people need to "think straight," apply good judgment, and make good decisions for their lives The disease of addiction can develop in people despite their best intentions or strength of character No one wants to grow up to be a drug addict, after all 15 The Reward Circuit Mesolimbic and Mesocortical Neuronal Pathways graphic from: Goldstein RZ, Volkow ND, (2002). Drug Addiction and Its Underlying Neurobiological Basis. Am J Psychiatry 159:1642–1652 16 Addiction is a Brain Disease A stress-induced defect in the reward pathways of the brain Drugs achieve “survival salience” Mediated by the neurotransmitter dopamine Alcohol and other drugs “hijack” the reward pathway, making usual life pleasures much less rewarding 17 Factors that contribute to addiction Genetic Cultural Underlying biological deficit in reward circuits Repeated engagement in drug use or other addictive behaviors, causing neuroadaptation in motivational circuitry 18 Factors that contribute to addiction (cont’d.) Cognitive and affective distortions Disruption of healthy social supports and problems in interpersonal relationships which impact the development or impact of resiliencies Exposure to trauma or stressors that overwhelm an individual’s coping abilities 19 Factors that contribute to addiction (cont’d.) Distortion in meaning, purpose and values that guide attitudes, thinking and behavior Distortions in a person’s connection with self, with others and with the transcendent (referred to as God by many, the Higher Power by 12-steps groups, or higher consciousness by others) The presence of co-occurring psychiatric disorders 20 Relationships between Substances of Abuse and Mental Disorders (Lehman et al.,1989) Acute and chronic substance use can produce psychiatric symptoms Substance withdrawal can cause psychiatric symptoms Substance use can mask psychiatric symptoms 21 Relationships between Substances of Abuse and Mental Disorders (Lehman et al.,1989) Psychiatric disorders can mimic symptoms associated with substance use Acute and chronic substance use can exacerbate psychiatric disorders Acute and chronic psychiatric disorders can exacerbate the recovery process from addictive disorders 22 Addiction is characterized by: The power of external cues Persistent risk and/or recurrence of relapse : Significant impairment in executive functioning Addiction is more than a behavioral disorder 23 Emotional changes Emotional changes in addiction can include: Increased anxiety, dysphoria and emotional pain Increased sensitivity to stressors associated with brain stress systems, such that “things seem more stressful” as a result Difficulty in identifying feelings, distinguishing between feelings and the bodily sensations of emotional arousal, and describing feelings to other people (sometimes referred to as alexithymia) 24 The emotional aspects of addiction are complex Reasons to use alcohol or other drugs: “Positive reinforcement” seeking a positive emotional state (“euphoria”) “Negative reinforcement” avoiding a negative emotional states (“dysphoria”) 25 Progression and Tolerance Intoxication -> • Experience a “high”, or “positive” emotional state associated with increased dopamine and opioid peptide activity in reward circuits • After the “high”, there is a neurochemical rebound, where reward function does not simply revert to baseline, but drops below original levels • Usually not consciously perceptible by the individual and not necessarily associated with functional impairments 26 Progression and Tolerance Over time: • Repeated experiences with substance use or addictive behaviors are not associated with ever increasing reward circuit activity… • …And are not as subjectively rewarding 27 Progression and Tolerance Withdrawal from drug use or comparable behaviors-> • Agitated, dysphoric and labile emotional experience, related to suboptimal reward and the recruitment of brain and hormonal stress systems • Associated with abrupt cessation of most pharmacological classes of addictive drugs 28 Progression and Tolerance While tolerance develops to the “high,” tolerance does not develop to the emotional “low” associated with the cycle of intoxication and withdrawal Thus, in addiction, persons repeatedly attempt to create a “high”--but what they mostly experience is a deeper and deeper “low” 29 Progression and Tolerance While anyone may “want” to get “high”, those with addiction feel a “need” to use the addictive substance or engage in the addictive behavior in order to try to resolve their dysphoric emotional state or their physiological symptoms of withdrawal Persons with addiction compulsively use even though it may not make them feel good, in some cases long after the pursuit of “rewards” is not actually pleasurable 30 Progression and Tolerance Although people from any culture may choose to “get high” from one or another activity, it is important to appreciate that addiction is not solely a function of choice As addiction is a chronic disease, periods of relapse, which may interrupt spans of remission, are a common feature of addiction 31 Addiction 1 of 3 ASAM Definition (April 2011): Addiction is a primary, chronic disease of brain reward, motivation, memory and related circuitry. Dysfunction in these circuits leads to characteristic biological, psychological, social and spiritual manifestations. This is reflected in an individual pathologically pursuing reward and/or relief by substance use and other behaviors. 32 Addiction 2 of 3 ASAM Definition (April 2011): Addiction is characterized by A B C D E inability to consistently abstain, impairment in behavioral control, craving, diminished recognition of significant problems with one’s behaviors and interpersonal relationships, a dysfunctional emotional response 33 Addiction 3 of 3 ASAM Definition (April 2011): Like other chronic diseases, addiction often involves cycles of relapse and remission. Without treatment or engagement in recovery activities, addiction is progressive and can result in disability or premature death. 34 DSM-5 Substance Use Disorder: 11 Criteria Taking the substance in larger amounts or for longer than you intended Persistent desire or unsuccessful efforts to cut down or control use Great deal of time spent obtaining, using, or recovering from effects of the substance Craving, or a strong desire or urge to use the substance Recurrent use resulting in a failure to fulfill major role obligations at work, school, or home Continued used despite persistent social or interpersonal problems caused or exacerbated by use Giving up or reducing important social, occupational or recreational activities because of substance use Recurrent use in situations in which it is physically hazardous Use despite knowledge of persistent/recurrent physical or psychological problem that is likely to have been caused or exacerbated by the substance Tolerance* (see next slide) Need for increased amounts Diminished effects with same amounts Withdrawal* (see next slide) Characteristic withdrawal syndrome Drug taken to avoid withdrawal 35 *NOTE: Tolerance and withdrawal criterion are not considered to be met for those taking the following substances solely under appropriate medical supervision: Opioids Stimulants Sedative-hypnotics 36 Substance Use Disorder (cont’d) Rationale continued: Further, studies from clinical and general populations indicate DSM-IV substance abuse and dependence criteria represent a singular phenomenon but encompassing different levels of severity. Mild SUD (2-3/11 criteria) will be coded with the DSM-IV substance abuse code to reflect the intent but not reality of considering substance abuse less severe than substance dependence. Moderate (4-5/11 criteria) and severe (6+/11 criteria) SUD will be coded with DSM-IV substance dependence codes. 37 Copyright © 2013. American Psychiatric Association. Classes of Drugs of Abuse Alcohol Stimulants Caffeine Nicotine Cannabis Opioids Sedative-hypnotics Hallucinogens Dissociative Drugs Club Drugs - will not be covered Anabolic Steroids - will not be covered Inhalants 38 39 What is a Standard Drink? 40 Use Consequences Repetition ABST NONPROB USE - + - ATRISK ABUSE DEP USE + -/+ - + + + + ++ + Loss of control, preoccupation, compulsivity, physical dependence + 41 What is “Low-Risk” drinking? Research shows that people who drink moderately may be less likely to experience an alcohol use disorder (AUD). To stay low risk for AUDs, you must keep within both the single-day and weekly limits. For men: No more than 4 drinks on any single day AND no more than 14 drinks per week For women and men > 65 who are healthy and on no medications: No more than 3 drinks on any single day AND no more than 7 drinks per week 42 What is Risky Drinking? Women: > 3 drinks per occasion; > 7/week Over 65: > 3 drink per occasion; > 7/week Men: > 4 drinks per occasion; > 14/week Any use is risky when: Pregnant Driving Taking certain medications Having certain medical conditions In recovery from addiction/cannot control drinking Hazardous: Pattern that increases risk for adverse consequences Harmful: Negative consequences have already occurred 43 What is Binge Drinking? A pattern of drinking alcohol that brings blood alcohol concentration (BAC) to 0.08 grams percent or above within 2 hours For the typical adult this pattern corresponds to consuming 5 or more drinks (male) or 4 or more drinks (female) in about 2 hours 44 Learning Objectives Part I. What is addiction? What are substance use disorders? Part II. What are the drugs of abuse? What are their effects? 45 4646 Stimulants Examples: Amphetamine (prototype) Cocaine (most common, includes “crack”) Methamphetamine (“crank,” “ice”) MDPV (“bath salts”) Methylphenidate Ephedrine Khat 47 Stimulants All have sympathomimetic activity and cause euphoria Routes of administration: Oral, IN, IV, smoked Reinforcing effects are predominantly related to dopaminergic effects in the nucleus accumbens Tolerance and cross-tolerance occur 48 Stimulants Medical uses Attention deficit disorder Narcolepsy Treatment resistant depression Obesity (YIKES!) Local anesthesia (cocaine) 49 Stimulant Intoxication and Withdrawal Intoxication: Withdrawal Euphoria Dysphoria Agitation and violence Lethargy Insomnia Anorexia Decreased dreaming Tachycardia, arrhythmia Hypertension Dilated pupils Hypersomnia Hyperphagia Increased dreaming Bradycardia Intense craving Paranoia, hallucinations Hyperthermia Seizure, stroke 50 Cocaine Tends to be used in a “binge/crash” pattern Medical complications: Nasal congestion Perforated nasal septum Cardiac arrhythmias Seizure, stroke Psychosis Cellulitis, endocarditis (IV use) Hepatitis B and C, HIV infection Suicide Homicide 51 Cocaine Different forms and routes of administration Cocaine HCL: snorted or injected “Crack” or freebase: smoked Coca leaf: chewed Smoking produces high within seconds that lasts 20- 30 minutes Intense “crash” as effects of the drug wear off 52 Methamphetamine Four percent of the US population has tried Methamphetamine Use formerly restricted to certain areas of the country (San Diego, Hawaii, Texas) Increasing use in rural areas, including Southern Ohio Easily synthesized using OTC pills and other readily available reagents 53 Methamphetamine Used in “binge/crash” pattern Rapid onset of action when smoked. High lasts 12-14 hours Can cause long-lasting psychosis Can cause substantial damage to dopaminergic neurons with prolonged use, even in relatively low doses Severe “crash” after use 54 Caffeine Intoxication and Withdrawal Intoxication Anxiety Agitation Motor restlessness Insomnia Tachycardia Flushed face Diuresis Withdrawal Dysphoria Headache Fatigue Hypersomnia Muscle tension Nausea 55 Nicotine Intoxication and Withdrawal Intoxication Arousal “Calm” Appetite suppression Tachycardia Salivation Dizziness Withdrawal Insomnia Anxiety Irritability Hyperphagia Bradycardia Difficulty concentrating 56 Marijuana 57 Marijuana Most widely used illicit drug in the U.S At least 30 % of the population has tried marijuana (80 million people) Effects are often situation dependent Route of administration: Smoked, oral Active ingredient: delta-9-tetrahydrocannabinol (THC) Endogenous cannabinoid receptors have been identified Mild tolerance may develop, with some cross tolerance to alcohol 58 Cannabis Intoxication and Withdrawal Intoxication: Euphoria Sedation Antiemetic Hyperphagia Memory deficits Conjunctival injection Ptosis Tachycardia Psychosis Withdrawal Dysphoria Anxiety Insomnia Nausea Anorexia Headache 59 Marijuana Potential Medical Uses Treatment of: Nausea in chemotherapy patients Wasting due to AIDS Spasticity Glaucoma Pain syndromes 60 MARIJUANA IS NOT A HARMLESS DRUG!!! Can cause toxic psychosis Heavy users are more likely to develop schizophrenia Panic reactions Accidents: found in 10% of fatal accident victims Hastens age-related loss of hippocampal neurons Impairs immune function Increased risk of heart attack within an hour of smoking 61 MARIJUANA IS NOT A HARMLESS DRUG!!! Contains more carcinogens than tobacco (and marijuana smokers inhale deeper and hold longer) Bronchitis Increased risk of lung, head and neck cancers Substantial motivational and cognitive deficits 62 Overview: Synthetic Cannabninoids K2/Spice 63 Synthetic Cannabinoids “Spice” first appeared in Europe in 2004 March 2011 DEA bans 5 chemicals most commonly found in K2/Spice JWH-018, JWH-073, CP-47,497, JWH-200, and cannabicyclohexanol DEA reports that increased use of synthetic marijuana has led to a surge in ER visits and poisoncontrol centers calls. Adverse health effects: seizures, hallucinations, paranoid behavior, agitation, anxiety, nausea, vomiting, racing heartbeat and elevated blood pressure 64 Opioids Opioid agonists: Morphine Heroin Meperidine Methadone Propoxyphene Oxycodone (including Oxycontin) Hydrocodone Hydromorphone Diphenoxylate Opioid antagonists Naloxone Naltrexone Mixed Agonist/antagonist: Buprenorphine 65 Opioids Opioid medications are invaluable in the treatment of acute, severe pain Opioid abuse and dependence have been problematic for centuries Main classes of opioid abusers: Street (usually heroin) abusers Medical abusers Methadone patients Routes of administration: Oral, IV, IM, SC, IN, Smoking, PR 66 Opioids Effects are mediated through endogenous opioid receptors: Mu: Analgesia, euphoria, respiratory depression, dependence Kappa: Sedation, diuresis Sigma: Dysphoria, hallucinations Delta: Cardiovascular effects, analgesia Tolerance and cross-tolerance exist 67 Opioid Intoxication and Withdrawal Intoxication Euphoria Sedation Slurred speech Constipation Analgesia Decreased respirations Attentional deficits Withdrawal Dysphoria, anxiety Insomnia Diarrhea, nausea, vomiting Muscle and joint pain Diaphoresis Chills Piloerection Tearing Yawning 68 Sedative-Hypnotic Drugs Examples Benzodiazepines Barbiturates Diazepam Phenobarbital Chlordiazepoxide Pentobarbital Clorazepate Secobarbital Oxazepam Others Lorazepam Meprobamate Alprazolam Chloral Hydrate Clonazepam Methaqualone Temazepam Zolpidem Triazolam Zapelon Flurazepam Alcohol 69 Sedative-Hypnotics Most have clinical utility as hypnotics, anxiolytics, sedatives or anticonvulsants 12-20% of American adults use in any give year 90% of med-surg patients are prescribed these drugs 2 billion (yes, billion) tablets of diazepam are prescribed annually in the U.S. 70 Sedative-Hypnotics All exert significant activity on GABA Prototype: Barbiturates Most common: Benzodiazepine (other than alcohol) Major avenue of supply: Physicians Route of administration: Oral, IM, IV Tolerance and cross-tolerance occur Withdrawal can be life-threatening Benzodiazepine antagonist: Flumazenil 71 Sedative Intoxication and Withdrawal Withdrawal Intoxication Dysphoria Euphoria (Rising BAL) Anxiety, agitation Dysphoria (Falling BAL) Insomnia Sedation Tremor Slurred speech Diaphoresis Incoordination GI distress Nystagmus Transient hallucinations Cognitive impairment Seizures 72 73 Hallucinogens “My surroundings..transformed themselves in more terrifying ways. Everything in the room spun around, and the familiar objects and pieces of furniture assumed grotesque, threatening forms. They were in continuous motion, animated, as if driven by an inner restlessness…Even worse than these demonic transformations of the outer world were the alterations that I perceived in myself, in my inner being. Every exertion of my will, every attempt to put an end to the disintegration of my outer world and the dissolution of my ego, seemed to be a wasted effort. A demon had invaded me, had taken possession of my body, mind and soul.” -Albert Hoffman, 1943 (Sandoz Pharmaceuticals) 74 Hallucinogens Examples LSD [Lysergic acid diethylamide] Psilocybin [mushrooms; 4-hydroxyldimethyltryptamine] Mescaline [peyote cactus; 3,4,5trimethoxyphenethylamine] STP [2,5-Dimethoxy-4-methylamphetamine or DOM] 75 Hallucinogens Examples (cont.) Nutmeg [Myristicin] Morning glory seeds [LSA, d-lysergic acid amide] Bufotenine [toad-licking; 5-hydroxydimethyltryptamine] 76 77 Hallucinogens Hallucinogens: include all drugs that cause hallucinations. Also cause sympathetic arousal. Primary mechanism seems to be upon serotonergic systems, most prominent in cerebral cortex and locus coeruleus Contaminants are common, esp. anticholinergic LSD is the most commonly used hallucinogen Sold as “microdots,” “window panes,” or “blotter’ Effects begin 30-90 minutes after ingestion (usually oral) and last up to 12 hours Rapid tolerance can develop No withdrawal syndrome reported 78 Hallucinogens-Lasting Effects Hallucinogen Persisting Perception Disorder: Episodic, spontaneous recurrences of hallucinogen sensory experiences, visual disturbances, light trails, flashing lights, etc. Commonly referred to as “flashbacks” Psychosis: Persistent symptoms including mood swings, vivid visual disturbances and hallucinations Can last for years 79 Hallucinogen Intoxication and Withdrawal Intoxication Euphoria, anxiety, panic reactions Perceptual abnormalities Incoordination/ tremor Tachycardia Blurred vision Dilated pupils Diaphoresis Withdrawal None described 80 Dissociative Drugs Distort visual and auditory perceptions without genuine hallucinations Produce feelings of detachment from environment Exert effects via glutaminergic and dopaminergic mechanisms Examples: Phencyclidine (PCP)-prototype Ketamine Dextromethorphan 81 Phencyclidine Intoxication Unpredictable behavior Decreased pain perception Vertical, horizontal and rotatory nystagmus Dysarthria Ataxia Rigidity and bizarre posturing Hyperacusis Increased reflexes Tachycardia, hypertension, hyperpyrexia Delirium and persistent psychosis 82 Phencyclidine (PCP) Initially developed as a general anesthetic Never approved for use in humans due to delirium and profound agitation occurring as patients emerged from anesthesia Often used to “lace” other drugs Route of administration: Oral, smoked, injected Effects occur within minutes and are unpredictable Effects last for several hours to several days No tolerance or withdrawal is described 83 Ketamine Slang names: Special K, “K,” Vitamin K, Cat valiums Anesthetic agent used most commonly in veterinary medicine Effects are similar to PCP (NDMA antagonist) Can cause neurotoxicity Route of administration: Oral, snorted, smoked, injected Less potent than PCP “Date Rape” drug 84 Dextromethorphan NMDA antagonist Available in OTC cough preparations 2-4 oz: mild stimulation, visual disturbances > 4 oz: begin to see dissociative effects Antihistamines and decongestants often also in DM containing preparations 85 86 Inhalants Include various volatile substances Aerosols Gasoline Airplane glue Paint thinners Gases Nitrites Inexpensive, readily available, not regulated, easy to conceal Use is most common in teens and pre-teens who move on to other drugs 87 Inhalant Intoxication and Withdrawal Intoxication Euphoria Ataxia Nystagmus Diplopia Slurred speech Depressed reflexes Hallucinations Withdrawal None described 88 Inhalants Ways administered: “Huffing” “Bagging” Sniffing or snorting Inhaling from balloons filled with Nitrous Oxide Rapid onset of intoxication with relatively short duration 89 Inhalants Signs of abuse: Detectable odor on breath Paint or chemical stains on face, hands, clothing Hidden bottles of paint, solvents, soaked rags Evidence of intoxication 90 Inhalants Medical Consequences Asphyxiation Nephrotoxicity Suffocation Hepatotoxicity Choking/Aspiration Cardiotoxicity Accidental injury Bone marrow Neurotoxicity suppression 91 Contact Information David L. Brager, CNP [email protected] The Centers for Families and Children, Cleveland, OH Discussion Treatment Considerations 93