Author(s): David E Weissman MD
Background A common question from trainees is how fast, and by how much, can opioids be safely dose escalated? I like to use the analogy of furosemide (Lasix) when discussing this topic. I have never seen a resident order an increase in Lasix from 10 mg to 11 mg, yet that is precisely what often happens with opioids, especially parenteral infusions. Like furosemide, dose escalation of opioids should be done on the basis of a percentage increase. In fact, this is reflexively done when opioid-non-opioid fixed combination products are prescribed; going from one to two tablets of codeine/acetaminophen represents a 100% dose increase. The problem arises when oral single agents (e.g. oral morphine) or parenteral infusions are prescribed. Increasing a morphine infusion from 1 to 2 mg/hr is a 100% does increase; while going from 5 to 6 mg/hr is only a 20% increase, and yet many orders are written, “increase drip by 1 mg/hr, titrate to comfort.” Some hospitals and nursing units even have this as a standing pre-printed order or nursing policy.
Key Point: In general, patients do not notice a change in analgesia when dose increases are less than 25% above baseline. There is a paucity of clinical trial data on this subject. A common formula used by many practitioners is:
For ongoing moderate to severe pain increase opioids doses by 50-100%, irrespective of starting dose.
For ongoing mild to moderate pain increase by 25-50%, irrespective of starting dose.
When dose escalating long-acting opioids or opioid infusions, do not increase the long-acting drug or infusion basal rate more than 100% at any one time, irrespective of how many bolus/breakthrough doses have been used. These guidelines apply to patients with normal renal and hepatic function. For elderly patients, or those with renal/liver disease, dose escalation percentages should be reduced.
The recommended frequency of dose escalation depends on the half-life of the drug. Short-acting oral single-agent opioids (e.g. morphine, oxycodone, hydromorphone), can be safely dose escalated every 2 hours. Sustained release oral opioids can be escalated every 24 hours. For methadone, levorphanol, or transdermal fentanyl no more frequently than every 72 hours is recommended.
See related analgesic Fast Facts:
# 18 Oral opioid dosing intervals
# 51 Opioid combination products
# 70 PRN range orders
# 74 Good and Bad analgesic orders
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Fast Facts and Concepts are edited by Drew A. Rosielle MD, Palliative Care Center, Medical College of Wisconsin. For more information write to: email@example.com. More information, as well as the complete set of Fast Facts, are available at EPERC: www.eperc.mcw.edu.
Version History: This Fast Fact was originally edited by David E Weissman MD. 2nd Edition published July 2005. Current version re-copy-edited March 2009.
Copyright/Referencing Information: Users are free to download and distribute Fast Facts for educational purposes only. Weissman DE. Opioid Dose Escalation, 2nd Edition. Fast Facts and Concepts. July 2005; 20. Available at: http://www.eperc.mcw.edu/EPERC/FastFactsIndex/ff_020.htm.
Disclaimer: Fast Facts and Concepts provide educational information. This information is not medical advice. Health care providers should exercise their own independent clinical judgment. Some Fast Facts cite the use of a product in a dosage, for an indication, or in a manner other than that recommended in the product labeling. Accordingly, the official prescribing information should be consulted before any such product is used.
ACGME Competencies: Medical Knowledge, Patient Care
Keyword(s): Pain – Opioids