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Published byDiana Conley Modified over 9 years ago
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Medical issues about Methadone : What the counselor needs to know
Judith Martin, MD Medical Director The 14th Street Clinic, Oakland, CA
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Counseling Staff
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THE DOSING WINDOW
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Epidemiology Opioid dependence Cost
Office of National Drug Control Policy (1999) 810,000 persons Only 170,000 receiving medication treatment Cost $20 billion per year total costs (NIDA 1992) $9.6 billion spent on heroin (ONDCP ) $1.2 billion per year health care costs (NIDA 1992)
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Prescription opioid abuse epidemiology
Prescription opioid use (2001), ED reports: 90,000+ (DAWN) Reports of oxycodone abuse:18,000+ Reports hydrocodone abuse: 21,000+ Reports methadone abuse: 10,000+ , oxycodone 450% increase! Bottom line: big street value!
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Number of new non-medical users of therapeutics
1. This figure is taken from the NSDUH, and shows the annual number of persons who have non-medical use of different substances. As can be seen in the figure, during the 1970s and most of the 1980s there was a relative stable number of new users for each class, and this did not really differ between drug classes. However, starting in the 1990s, the number of new users of pain relievers (opioids) has increased dramatically, and is markedly higher than the other classes of substances. (NSDUH, 2002)
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Diacetylmorphine (Heroin) Hydromorphone (Dilaudid)
Commonly Abused Opioids Diacetylmorphine (Heroin) Hydromorphone (Dilaudid) Oxycodone (OxyContin, Percodan, Percocet, Tylox) Meperidine (Demerol) Hydrocodone (Lortab, Vicodin) 1. While most patients abuse heroin, there are several other opioids that can be abused. This list is continued on the next slide, and it is not meant to be exhaustive. Note that all of these opioids exert a mu agonist effect.
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Morphine (MS Contin, Oramorph) Fentanyl (Sublimaze)
Commonly Abused Opioids (continued) Morphine (MS Contin, Oramorph) Fentanyl (Sublimaze) Propoxyphene (Darvon) Methadone (Dolophine) Codeine Opium 1.
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Four questions patients ask:
How is methadone better for me than heroin? What is the right dose of methadone for me? How long should I stay on methadone? What are the side effects of methadone?
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Talking to patients about addiction treatment models
Medical Recovery Spiritual Psychodynamic Behavioral
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ADDICTION AS A CHRONIC ILLNESS
Chronic relapsing condition which untreated may lead to severe complications and death.
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ADDICTION AS CHRONIC DISEASE: IMPLICATIONS
It is treatable but not curable. Adjustment to diagnosis is part of patient’s task. There is a wide spectrum of severity. Retention in treatment is key. Best treatment is integrated.
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Four questions patients ask:
How is methadone better for me than heroin? What is the right dose of methadone for me? How long should I stay on methadone? What are the side effects of methadone?
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How is methadone better than heroin?
Legal Avoids needles Known amount ingested
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Opiate effects, physical
Predictable physical effects of administering opiates: Tolerance: the body becomes efficient in processing the drug and requires ever higher doses to produce the desired effect. Dependence: when the drug is discontinued there are typical withdrawal signs and symptoms.
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IDU, pattern of heroin injection over 3 days
From Dole, Nyswander and Kreek, 1966
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Normal Range “Comfort Zone” Dose Response
Methadone Simulated 24 Hr. Dose/Response At steady-state in tolerant patient “Loaded” “High” “Abnormal Normality” Normal Range “Comfort Zone” Dose Response Subjective w/d “Sick” Objective w/d Time 0 hrs. 24 hrs. Opioid Agonist Treatment of Addiction - Payte
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How is methadone better than heroin?
Legal Avoids needles Known amount ingested Slow onset: no “rush” Long acting: can maintain “comfort” or normal brain function Stabilized physiology, hormones, tolerance
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Four questions patients ask:
How is methadone better for me than heroin? What is the right dose of methadone for me? How long should I stay on methadone? What are the side effects of methadone?
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Normal Range “Comfort Zone” Dose Response
Methadone Simulated 24 Hr. Dose/Response At steady-state in tolerant patient “Loaded” “High” “Abnormal Normality” Normal Range “Comfort Zone” Dose Response Subjective w/d trough “Sick” Objective w/d Time 0 hrs. 24 hrs. Opioid Agonist Treatment of Addiction - Payte
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What is the right dose? Eliminate physical withdrawal
Eliminate ‘craving’ Comfort/function: usually trough is ng/ml, peak no more than twice the trough. Not oversedated Blocking dose
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“How Much???? Enough!!!” Tom Payte, MD
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Ref: J. C. Ball, November 18, 1988 Slide adapted from Tom Payte
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Four questions patients ask:
How is methadone better for me than heroin? What is the right dose of methadone for me? How long should I stay on methadone? What are the side effects of methadone?
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Relapse to IV drug use after MMT 105 male patients who left treatment
Percent IV Users Treatment Months Since Stopping Treatment Adapted from Ball & Ross - The Effectiveness of Methadone Maintenance Treatment, 1991 Opioid Agonist Treatment of Addiction - Payte
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“How Long??? Long Enough!!” Tom Payte, MD
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Four questions patients ask:
How is methadone better for me than heroin? What is the right dose of methadone for me? How long should I stay on methadone? What are the side effects of methadone?
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Side effects of methadone:
General opiate effects: Sedation/stimulation Maintained phys. dependence (stable) hypogonadism (not as severe as with heroin, may be dose dependent) Constipation Slight QTc prolongation on ECG (Martell etal) Sweating Methadone treatment tied to regulated clinic
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Treatment Outcome Data
8-10 fold reduction in death rate reduction of drug use reduction of criminal activity engagement in socially productive roles reduced spread of HIV excellent retention
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Crime among 491 patients before and during MMT at 6 programs
Crime Days Per Year Adapted from Ball & Ross - The Effectiveness of Methadone Maintenance Treatment, 1991 Opioid Agonist Treatment of Addiction - Payte
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HIV CONVERSION IN TREATMENT
HIV infection rates by baseline treatment status. In treatment (IT) n=138, not in treatment (OT) n=88 Source: Metzger, D. et. al. J of AIDS 6:1993. p.1052 Opioid Maintenance Pharmacotherapy - A Course for Clinicians
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A FEW WORDS ABOUT BUPRENORPHINE
“Ceiling effect” and safety Displaced other opiates: withdrawal on induction Less agonist strength Schedule 3(methadone is 2) One form combined with naloxone Office – based use available
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Credit: Don Wesson, MD
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Buprenorphine, Methadone, LAAM: Treatment Retention
100 80 73% Hi Meth 60 58% Bup Percent Retained 53% LAAM 40 20 20% Lo Meth 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Study Week Johnson et al, 2000
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Buprenorphine, Methadone, LAAM: Opioid Urine Results
100 All Subjects 80 LAAM 49% 60 Bup 40% Hi Meth Mean % Negative 40 39% Lo Meth 20 19% 1 3 5 7 9 11 13 15 17 Study Week
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Effect of counseling in buprenorphine treatment (Fiellin, 2002)
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Retention in treatment
Kakko et al, 2003, 20 15 Remaining in treatment (nr) 10 5 Control, 6-day detox Buprenorphine maintenance 50 100 150 200 250 300 350 Treatment duration (days)
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Pharmacotherapy in context: correct glossary
Abstinence includes pharmacotherapy Maintenance, not substituion or replacement (new term also: MAT) Tapering from maintenance, not detoxification, (also ‘medically supervised withdrawal’, or MSW) Discontinuation, not discharge Toxicology screens: pos/neg, not clean/dirty)
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Opioid pharmacotherapy, summary:
Methadone, buprenorphine and LAAM all approved by the FDA for treatment of opiate dependence. (LAAM not currently available from any drug company) Best evidence so far supports maintenance. Detoxification attempts should have maintenance as a back up in case of relapse.
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