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PAIN MANAGEMENT CONSIDERATIONS FOR PEOPLE WHO USE OPIOIDS

Incidence of opioid use (OU) and opioid use disorder (OUD) is increasing in the U.S. (CDC 2022). People regularly using opioids usually develop tolerance to opioid medications and/or may be on medication assisted therapy (MAT).

Table 4: COMMON MAT REGIMENS
Common MATs for OUD
Methadone Full opioid agonist People on methadone and buprenorphine should continue their medications as prescribed to prevent withdrawal and
reduce the risk of return to use.
Buprenorphine +/- Naloxone (Suboxone, Subutex, Sublocade) Partial opioid agonist +/- antagonist
Naltrexone Opioid antagonist People on oral naltrexone should hold their medication for 72 hours if possible to allow opioids to work. An abortion should not be delayed to allow IM naltrexone to wear off.

There is no difference in pain management goals for people with opioid tolerance (or OUD) compared to those who do not use opioids regularly. Here are general principles (ASAM 2020, Huxtable 2011, NAF 2018, SAMHSA 2021):

  • People using opioids or MAT may need higher opioid doses to achieve adequate analgesia, particularly to overcome opioid receptor blocking effects of buprenorphine and IM naltrexone.
  • MAT for opioid use disorder will not contribute to analgesia; additional treatment will be needed.
  • Short acting, high affinity opioids like fentanyl or hydromorphone (Dilaudid) are effective and safe to use.
  • While data show oral opioids may increase nausea without improving pain, there are situations in which they are used, and may require higher doses in OUD.
  • Benzodiazepines may be more sedating for people on buprenorphine or methadone.
  • Determine dosing by monitoring reported pain, alertness, and respiratory rate.
  • Ensure reversal agent (naloxone) is available and titrate with small doses to reduce withdrawal risks.
  • Ketamine is a useful option in people with significant opioid tolerance.
  • Reassure that the goal is to provide adequate pain management. Be aware that people with OUD, particularly people of color, may have experienced medical discrimination and inadequate pain control in the past.
  • Utilize various pain management methods such as NSAIDS, local anesthetic, breathing and visualization techniques, and a support person.
  • Trauma responsive care is for everyone. Rates of physical, emotional, and sexual trauma are higher in this population.
  • The expected duration of pain from uterine aspiration is the same as with people not on MAT, and post-procedural pain management should not differ.
  • MAT prescribers can often provide guidance for acute pain management, and follow-up after an individual receives opioids. Communicate with the MAT clinician if possible, or offer a note documenting the controlled substancesopioids received.

For additional considerations, see “Special Considerations for People with Substance Use Disorder” (Attaie 2022).

TABLE 5: PAIN MANAGEMENT OPTIONS FOR PEOPLE WITH OPIOID USE DISORDER
Aspiration Abortion Management Options
Managing MAT prior to procedure
  • Buprenorphine: continue home dose on day of procedure to prevent withdrawal and reduce the risk of return to use
  • Methadone: continue dose on day of procedure to prevent withdrawal and reduce the risk of return to use
  • Naltrexone (PO): hold for 72 hours prior to procedure
  • Naltrexone (IM): delay reinjection until after the procedure and consider non-opioid pain management to avoid procedural delays as opioids may be ineffective if <30 days since last injection.
Oral pain medication pre-procedure
  • Give NSAID (e.g. ibuprofen, naprosyn or ketorolac) and acetaminophen
  • Any opioid may be given, and at 2-3 times the standard dose
  • Opioids are less effective for someone on naltrexone
  • Lorazepam 1-2 mg (avoid if using IV midazolam during procedure)
  • Consider gabapentin 300 -600 mg (may cause sleepiness after procedure)
Moderate Sedation
  • For patients on Methadone or Buprenorphine
  • For patients on Naltrexone (po < 72 hours, IM < 30 days)
  • Cervical block
  • Fentanyl 200 mcg IV (higher initial doses are often needed)
  • Midazolam 2 mg IV (may repeat 1-2 mg q 2-5 minutes). Can take 3-6 minutes before full effect
  • Consider ketamine 0.3-1.0 mg/kg (25- 50 mg, slow push IV
  • Consider dexmedetomidine 25 mcg slow push IV (repeat q5-10 min as needed)
  • Cervical block
  • Fentanyl ineffective at 100mcg
  • Midazolam 2 mg IV (may repeat 1-2 mg q 2-5 minutes); can take 3-6 minutes before full effect
  • Consider ketamine 0.3-1.0 mg/kg (25- 50 mg, slow push IV
  • Consider dexmedetomidine 25 mcg IV slow push (repeat q5-10 min as needed)

 

Deep sedation
  • Cervical block
  • Propofol per facility protocol
  • Careful escalation of fentanyl with monitoring
Post-procedure pain management for home use Give NSAIDs (e.g., ibuprofen)
Give acetaminophen (maximum daily dose < 4000 mg)
Avoid opioids or mixed narcotic analgesics (e.g., Tylenol with codeine)
Medication Abortion Management Options
Home pain management
  • Continue regular dose of medication-assisted treatment
  • Give NSAIDs
  • Give acetaminophen (maximum daily dose < 4000mg)
  • Avoid opioids or mixed narcotic analgesics (e.g., Tylenol with codeine)

1 Alternative or supplemental options for pain management include dexmedetomidine IV, gabapentin (Gray 2019), and nitrous oxide (Singh 2017), although data are limited on pain improvement with use.



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TEACH Abortion Training Curriculum 8th Edition Copyright © by The TEACH Program. All Rights Reserved.

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