Enter 24hour total doses below, then click the convert button to display 24hour equianalgesic doses. These should be used in conjunction with the summary of product characteristics for the fentanyl patch being used. This calculator, which is based roughly on information provided by. Carrying out this conversion correctly can be challenging and it is advisable to seek specialist palliative care advice on removal of the patch, it takes approximately 17 hours for serum concentration of. Fentanyl is an opiate, similar to morphine or methadone. So by applying the patch with the last dose of the oral morphine the chances of increasing pain during the drug transition can be avoided. Fentanyl duragesic side effects, withdrawal and faqs. Fentanyl patch 100mcghour 360mg morphine 24 hours consider dose reduction of 20% a. Converting to transdermal fentanyl palliative care. The optimal dose cannot be predicted by the dose of regular opioid or pervious. Opiate bioavailability and response are highly variable. The conversion factors listed are derived from pooled data in the. Converting to transdermal fentanyl palliative care network of. The calculation of opioid conversion is a crucial step in intensive care and is necessary throughout all the medical branches.
Opiate equianalgesic dosing chart committee 1nn s of age. Use appropriate opioid for situation or care setting. In the case of converting morphine to methadone, methadone has a. Bernardine newhouse november 14, 2017 uncategorized leave a comment 76 views. Demystifying opioid conversion calculations 87 n in patients who are not opioidtolerant note. Do not use this tool to convert from one opioid to a different opioid. Morphine milligram equivalent mme calculator nyc health. If you are converting a patient to or from fentanyl i. Consider the need to adjust dose for conditions that increase opiate.
Comparative doses of oral morphine and transdermal fentanyl are given in tables 1 and 2. The breakthrough dose of any opioid except fentanyl should be one sixth of the total daily dose. Subcutaneous transdermal conversion ratio example reference fentanyl fentanyl 1. John smith, a terminally ill lung cancer patient has pain that is well.
Patches conversion doses drug name drug dose equivalent oral morphine dose fentanyl 25 patch 25microgramshour 30mg to 4mg24hours fentanyl 50 patch 50 microgramshour 5mg to. Opioid equivalence chart gloucestershire hospitals nhs. Scottish palliative care guidelines fentanyl patches. Opioids opiates are a group of analgesic drugs, used primarily for pain. How should conversion from oral morphine to fentanyl patches be. Opioid conversion ratios guide to palliative care practice.
Do not change fentanyl patches to another opioid in a. Fentanyl patch dosing determination based on current opioid therapy. To treat cancer pain, physicians often decide to jump directly from step 1 of the world health organization who analgesic ladder to step 3. Fentanyl fentanyl is a synthetic opiate 50 100 times more potent than morphine and is administered. You wish to convert the therapy to transdermal fentanyl.
Once conversion is calculated, ensure opioid dose is prescribed in divided doses as appropriate. C the conversion table is unidirectional only and should only be used to convert adult patients from their current oral or. It may be 812h or longer after putting on the first patch. Dose equivalents and changing opioids faculty of pain medicine. Fentanyl may cause less constipation, sedation, and cognitive. Equianalgesic chart changes in italics ui health care. Transdermal and parenteral fentanyl dosage calculations.
Each 2 mg po morphine approximately equivalent to 1 mcghr fentanyl patch e. To convert from morphine mg to fentanyl microgra mhour divide by 3. Canadian guideline for safe and effective use of opioids. Fentanyl alternatives, side effects, withdrawal and faqs home. Patient on 50 microgramshour fentanyl patch, unable to take prn oral opioid and in last days of life. Transdermal fentanyl in opioidnaive cancer pain patients. Because extendedrelease products such as butrans deliver. Advanced opioid conversion calculator morphine equivalents. Initial dose based on previous 24hour opioid requirement consult product literature, for evaluating analgesic efficacy and dose increments, see. The hydromorphone is equianalgesic to a dose of 96 mgd of oral morphine.
Fentanyl patch converter globalrph conversion from other opiates. Clinical pharmacist, university of new mexico hospitals. The conversion ratio of certain opioids can be dependent on the dose of the original opioid. There is no dose equivalence between fentanyl lozenges and other opioid formulations. Methadone, fentanyl lozenges and neuraxial opioids are not included in this table due to their complex and variable pharmacokinetics. Transdermal fentanyl should only be used in patients who are already tolerant to opiate therapy, and who require a total daily dose of other opiates at least equivalent to a 25 mcg per hour. Conversion of opioid analgesics to fentanyl transdermal. How should conversion from oral morphine to fentanyl. Dispose of the unused part of the patch safely as described in the fentanyl patch care section. Levys rule to convert from oral morphine to transdermal fentanyl.
Prescribing information does not exclude the 12 mcgh tdf patch from this contraindication n in the. Chewing on the quarter strip of fentanyl patch led to pleasant and strong opiate effects hitting me within 510 minutes, and peaking in about 20 minutes or less. What are the steps for converting from morphine or equivalent to. Opioid equivalence chart gloucestershire hospitals. My experience chewing a fentanyl patch and almost overdosing fentanyl, opiate addiction october 17, 2017 if youre thinking about chewing fentanyl patch gel, then you would seriously benefit from. Opioid converter morphine equivalent calculator omni. What every pharmacist should know about transdermal. Transdermal dosage use only when converting another opioid to fentanyl patch. The 50, 75, and 100 mcghr patches should only be used in patients already on and tolerant to opioid therapy. Recommendations based on data contained in the package insert. An alternative algorithm for dosing transdermal fentanyl for.
This calculator should not be used to determine doses when converting a patient from one opioid to another. Opioid oral morphine milligram equivalent mme conversion. Fentanyl is used for long term, severe, chronic pain and is not for use in relieving temporary pain. Butrans contains buprenorphine, a schedule iii controlled substance. In other words, the conversion factor not accounting for days of use would be 6025 or 2. Not be used to determine doses when converting a patient from one opioid to another. Fill in the mg per day for whichever opioids your patient is taking. This is especially important for fentanyl and methadone conversions. Converting from oral morphine to fentanyl transdermal patch. Codeine, fentanyl, hydrocodone, hydromorphone, methadone, morphine.
Fentanyl is a potent opioid analgesic with selective action at the mu opiate receptor. Conversions to and from fentanyl transdermal are notoriously tricky, requiring. Transdermal patch should be used only in opioid tolerant patients. The fentanyl patch strength in micrograms is equal to half of the total dose of sustained release morphine given over 24 hours. Longacting opioids fentanyl transdermal, methadone should not be used in opioid naive patients. Patients who are taking a daily dose of morphine that is not exactly equivalent to a particular fentanyl patch strength, will need to be changed to. Quickwhat dose of the transdermal fentanyl patch duragesica is equianalgesic to a 3 mghr morphine continuous infusion. Though the medication can be taken safely under a doctors care, many individuals do abuse it in order to experience the. The use of transdermal fentanyl in patients with cancer.
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