COT in CNCP Flashcards

1
Q

COT

A

Chronic Opioid Therapy

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2
Q

CNCP

A

Chronic Non Cancer Pain

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3
Q

Patients for Opioid Prescribing

A
  • Outpatient settings
  • Doesn’t include active cancer treatment, palliative care, and end-of-life care
  • Treat patient >= 18 years old with pain longer than 3 months or past time of normal tissue healing
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4
Q

Starting Opioid Recommendations

A
  • Start at the lowest effective dosage
  • Should consider risks vs benefits when increasing the dosage >= 50 MME/day
  • Avoid increasing dosage >= 90 MME/day or should carefully justify titrating a dosage to that range
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5
Q

Prior to Initiating Opioids

A
  • Maximize non opioid medications
  • Use screening tests like SOAPP or ORT
  • Controlled Substance Agreement
  • Review PMP Report
  • Baseline UDM
  • Discuss risks and benefits of using controlled substances with patient
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6
Q

Initiating Opioids

A
  • Complete Critical 1st Assessment
  • Start low and go slow
  • Start on short acting opioid
  • Reassess in ~2 weeks
  • Prescribe immediate release formulas over extended-release or long-acting
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7
Q

MED vs MME

A
MED = Morphine Equivalent Dose
MME = Morphine Milligram Equivalent
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8
Q

Opioid Dosing Range

A
  • Low: 5-30 mg per day MED (MME)
  • Moderate: 35-50 per day MED (MME)
  • High: >90 per day MED (MME)
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9
Q

Methadone Cautions

A
  • Variable half life and duration (Dose: q6-12 hours)
  • DDI: alcohol, azoles, thioridazine (avoid)
  • Can increase QTc interval (decrease dose if this occurs)
  • Can accumulate in the elderly
  • No changes in dose until 5-7 days after starting methadone
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10
Q

Fentanyl Cautions

A
  • ~100x more potent than morphine (don’t use in the opioid naive)
  • Takes 24 hours before full effect is known
  • NOT for breakthrough/acute pain
  • Highly lipophilic (caution in high BMI)
  • Different generic products are not truly interchangeable
  • Can only titrate in 3 day increments
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11
Q

4 A’s of Opiate Monitoring

A
  • Analgesia
  • Activities of daily living
  • Adverse events
  • Aberrant drug-related behaviors
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12
Q

Undesired Opioid Use Outcomes

A
  • Physical Dependence
  • Tolerance-larger doses for same effect
  • Addiction vs pseudo-addiction
  • Withdrawal
  • Hyperalgesia
  • Aberrant medication related behavior
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13
Q

Signs/Symptoms of Aberrant Medication-Related Behavior

A
  • Selling prescription drugs
  • Forging prescriptions
  • Stealing drugs
  • Injecting oral formulations
  • Obtaining prescription drugs from non-medical sources
  • Concurrently abusing alcohol/illicit substances
  • Escalating doses on multiple occasions despite warnings
  • “Losing” prescriptions on multiple occasions
  • Repeatedly seeking prescriptions from other providers/ED without informing provider or after warnings to desist
  • Evidence of deteriorating function due to drug use
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14
Q

Urine Drug Monitoring

A
  • For suspected medication related aberrant behavior
  • Make sure test ordered will test for the medication in question
  • May damage provider-patient relationship
  • Document when patient took last dose of medication tested
  • High risk medication, not high risk patients (good data => good therapy)
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15
Q

Immunoassay Presumptive Screen

A
  • In-office/PoC or lab-based IA test
  • Less specific/sensitive
  • Results in minutes
  • Detects drug classes and few meds, illicit substances
  • Guidance for preliminary treatment decisions
  • Cross-reactivity common, more false positives
  • High cutoff levels: more false negatives
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16
Q

GC-MS or LC-MS/MS Definitive Quantitative

A
  • Laboratory test
  • Highly specific and sensitive
  • Results in hours to days
  • Measures [all medications, illicit substances, and metabolites]
  • Definitive identification and analysis
  • False-positives/negatives and rare
17
Q

LA Opioids

A
  • Theoretically have less abuse potential
  • Help with patient adherence
  • Provide consistent levels of analgesic
  • Allow patients to focus less on pain/pain medications
18
Q

Abuse Deterrent Formulations

A
  • Physical Barriers
  • Aversive components
  • Sequestered antagonists

All brand names, most not covered, and all ER/LA

19
Q

Physical Barriers Advantages/Disadvantages

A

Advantages

  • Prevents crushing/chewing
  • No AEs in compliant patients

Disadvantages

  • Doesn’t deter abuse of intact tablets
  • Only one approved formulation available
20
Q

Aversive Components Advantages/Disadvantages

A

Advantages

  • May prevent chewing/crushing
  • May limit abuse of intact tablets (amplifying niacin AEs)

Disadvantages

  • Potential AEs for compliant patients
  • AEs may prevent appropriate dose increase
  • AEs may not be sufficient to deter abuse
  • No FDA-approved formulation
21
Q

Sequestered Antagonists Advantages/Disadvantages

A

Advantages

  • Prevent crushing/chewing
  • FDA-approve formulations available

Disadvantages

  • Doesn’t deter abuse of intact tablets
  • Chewing/crushing tablets may cause severe withdrawal symptoms
22
Q

Buprenorphine Pros for Pain

A
  • Partial agonist with ceiling effect for analgesia/AE
  • Simpler dosing
  • Less DDI, better safety
  • CIII
  • More optimal choice for patients with aberrant behavior/addiction
  • Doesn’t need DEA for CNCP treatment
23
Q

Buprenorphine Cons for Pain

A
  • If on other opioid meds, may need to decrease to =< 30 MME
  • May not be adequate for severe pain
  • Insurance obstacles
24
Q

Opioids + Endocrine System

A
  • Inhibit the release of gonadotropin releasing hormone and corticotropin releasing factor from hypothalamus
  • Inhibits pituitary release of several hormones
  • Secondary hypogonadism
25
Q

Opioids + Sleep Apnea

A
  • Cause central sleep apnea by decreasing medullary responsiveness to CO2 levels
  • Worsens obstructive sleep apnea
  • Compounded by use with other CNS depressants like benzos
26
Q

Opioids + Hyperalgesia

A
  • Heightened pain perception with opioid use in absence of disease progression
  • Treated by decreasing opioid dose
27
Q

Holy Trinity

A
  • Opioid + Benzo + Carisoprodol
  • Don’t use Soma!
  • Metabolized to meprobamate which is anxiolytic (inhibits anxiety)
  • Benzos also greatly increase risk of accidental overdose, avoid using with opioid medications
28
Q

Opioids + Gabapentinoids

A
  • Significant increase in opioid related deaths
  • Increased likelihood to blackout or OD
  • Shown to increase effects of heroin
  • Especially be concerned in the patient is on a high dose of gabapentinoids