Fentanyl Transdermal System (TDS ... - Veterans Affairs
National Pain Management Strategy Coordinating Committee
Pharmacy Workgroup
Fentanyl Transdermal Patch Dosing and Safety Information Paper
Fentanyl transdermal patches have recently been associated with a number of serious adverse events and deaths nationwide. Clinicians should use the fentanyl patch only if they are familiar with the prescribing information. This letter provides clinicians with important information to promote the safe use of the fentanyl transdermal patch.
Who Should Receive Fentanyl transdermal patch
• Fentanyl tranasdermal patch is indicated in patients who have persistent, moderate to severe chronic pain that
○ requires continuous, around-the-clock opioid administration for an extended period of time, and
○ cannot be managed by other means such as non-steroidal analgesics, opioid combination products, or immediate-release opioids.
• Fentanyl transdermal patch should NOT be used for management of mild, acute, short-lasting, or intermittent pain. It should not be used on an as-needed basis.
• Fentanyl transdermal patch should ONLY be used in patients who are already receiving opioid therapy, who have demonstrated opioid tolerance, and who require a total daily dose at least equivalent to fentanyl 25 mcg/h.
• Patients who are considered opioid tolerant are those who have been taking, for a week or longer, at least 60 mg of oral morphine daily, or at least 30 mg of oral oxycodone daily, or at least 8 mg of oral hydromorphone daily, or an equianalgesic dose of another opioid.
Dosing and Administration
Converting from Other Opioids to the Fentanyl Transdermal Patch
• As a general rule, when converting to fentanyl from another opioid, use about 25mcg/h of fentanyl transdermally for every 90 mg of oral morphine equivalent.
• Appropriate dosage increments should be based on the daily use of supplemental opioids with the equivalency of morphine 45 milligrams/day orally to a 12.5 micrograms/hour increase in the transdermal fentanyl dose. Duragesic-12 delivers 12.5mcg/h of fentanyl.
INITIAL FENTANYL
TRANSDERMAL DOSAGE
Only for converting another
opioid to fentanyl
Adapted from the Duragesic PI, 2007
* The VA/DOD Medications Pocket Guide and equianalgesic opioid conversión ratios may be found at .
• Alternatively, the dose of fentanyl can be calculated using the following table. This table should only be used when converting to fentanyl; it should NOT be used when converting from fentanyl to another opioid. The conversion ratios are conservative and may result in overdosage if used to convert fentanyl to other opioids.
• Prescribe a short-acting opioid analgesic, to be taken by the patient as needed, when fentanyl is first started, since the onset of the analgesic effects of fentanyl may be delayed about 20 hours.
• Titrate patients upwards no more frequently than every 72 hours after the initial dose or no more frequently than every 6 days thereafter. Serum fentanyl concentrations increase gradually following initial application of the patch, generally leveling off between 12 and 24 hours and remaining relatively constant, with some fluctuation, for the remainder of the 72-hour application period. Dosage increases made more frequently than the recommended intervals may result in too rapid systemic accumulation of drug and potentially serious toxicity.
• Do not cut or damage the patch. If the transdermal system is cut or damaged, controlled drug delivery will not be possible, which can lead to the rapid release and absorption of a potentially fatal dose of fentanyl.
Converting from Fentanyl to Other Opioids
• There are no FDA-approved dosing instructions on how to convert patients from fentanyl to other opioids. After discontinuing the fentanyl patch, titrate the new opioid according to the patient’s level of pain relief and tolerability.
• Take into consideration the fact that, after removal of the fentanyl patch, serum fentanyl concentrations decline gradually, falling about 50% in approximately 17 (range 13-22) hours.
Patient Education
Clinicians should educate patients on the proper use, storage, and disposal of fentanyl transdermal patch.
• Advise patients to wear the patch continuously for 72 hours, and that each patch should be applied to a different skin site after removal of the previous transdermal patch.
• Patches should be applied to intact, non-irritated, and non-irradiated skin on a flat surface such as the chest, back, flank, or upper arm.
• Hair at the application site should be clipped (not shaved) prior to patch application.
• The patch should not be used if the seal is broken, or if it is altered, cut, or damaged in any way prior to application. This could lead to the rapid release of the contents of the patch and absorption of a potentially fatal dose of fentanyl.
• The transdermal patch should be pressed firmly in place with the palm of the hand for 30 seconds, making sure the contact is complete, especially around the edges.
• Patients should avoid exposing the application site to direct external heat sources, such as:
o heating pads,
o electric blankets,
o heat lamps,
o saunas,
o hot tubs, and
o heated water beds, etc.
• If patients develop a high fever while wearing the patch they should contact their physician.
• Patients should be advised that fentanyl may impair mental and/or physical ability required for the performance of potentially hazardous tasks (e.g., driving, operating machinery).
• Patients should be made aware of the potential for severe constipation and other opioid side effects.
• Patients should be informed that, if the patch dislodges and accidentally sticks to skin of another person, they should immediately take the patch off, wash the exposed area with water and seek medical attention for the accidentally exposed individual.
• Fentanyl TDS should be kept out of the reach of children and pets, preferably in a locked cabinet.
• Patients should be advised to fold (so that the adhesive side adheres to itself) and immediately flush down the toilet any used fentanyl patches after removal from the skin. Accidental exposure or misuse may lead to death or other serious medical problems.
References:
Duragesic Patch . Full US Prescribing Information. .
VA/DoD Clinical Practice Guideline for the Management of Opioid Therapy for Chronic Pain. Medications Pocket Guide. .
Opioid Therapy for Chronic Pain. VA/DoD Clinical Practice Guideline for the Management of Opioid Therapy for Chronic Pain. .
Fudin J. Chemical classes of opioids. ()
PDR® entry for Duragesic Transdermal System (Ortho-McNeil). From MICROMEDEX. :\mdx\mdxcgi\MEGAT.SYS&SET=1C6F2BEA9730B810&SYS=3&T=0960&D=1&Q=18.
-----------------------
Adapted from the Duragesic PI, 2007
1. Calculate the previous 24-hour opioid analgesic requirement.
2. Convert this amount to the equianalgesic oral morphine dose.*
3. The table on the right displays the range of 24-hour oral morphine doses that are recommended for conversion to each fentanyl patch dose. Use this table to find the calculated 24-hour morphine dose and the corresponding fentanyl patch dose.
4. Stop the previous opioid and initiate fentanyl patch treatment using the recommended dose and titrate patients upwards (no more frequently than every 3 days after the initial dose or no more frequently than every 6 days thereafter) until analgesic efficacy is attained.
5. The recommended starting dose when converting from other opioids to fentanyl patch is likely too low for 50% of patients. This starting dose is recommended to minimize the potential for overdosing patients with the first dose. For delivery rates in excess of 100 mcg/h, multiple systems may be used.
|Oral 24-hour |DURAGESIC® |
|Morphine |Dose |
|(mg/day) |(mcg/h) |
|60-134 |25 |
|135-224 |50 |
|225-314 |75 |
|315-404 |100 |
|405-494 |125 |
|495-584 |150 |
|585-674 |175 |
|675-764 |200 |
|765-854 |225 |
|855-944 |250 |
|945-1034 |275 |
|1035-1124 |300 |
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