What is the starting dose for pain management using morphine?
15mg MR BD and 5mg for breakthrough pain
Increasing morphine dose
Increase 50%
Breakthrough morphine dose
1/6th - 1/10th
Codeine –> morphine conversion
/10
Tramadol –> morphine conversion
/10
Oral morphine –> SC/IV/IM morphine conversion
/2
Oral morphine –> oral oxycodone conversion
/1.5
Oral morphine –> SC oxycodone
/2
Oral morphine –> SC diamorphine conversion
/3
Oral oxycodone –> SC diamorphine conversion
/1.5
Oral morphine —> SC alfentanil
/30
What does a transdermal fentanyl 12 microgram patch equate to in oral morphine
30mg
What does a transdermal buprenorphine 10 microgram patch equate to in oral morphine
24mg
Mx metastatic bone pain
Strong opioids
Bisphosphonates
Radiotherapy
Denosumab (Inhibits RANKL preventing osteoclasts, preferred to bisphosphonates when eGFR <30)
Mx agitation/confusion in palliative
first choice: haloperidol
other options: chlorpromazine, levomepromazine
Mx secretions (conservative or medical)
Conservative:
Avoiding fluid overload
Medical:
Hyoscine hydrobromide or hyoscine butylbromide (less sedative)
Glycopyrronium bromide may also be used
Mx N&V
Cyclizine then levomepromazine
Ondansetron for acute post chemo
Dexamethasone for delayed post chemo
Haloperidol for opoid induced nausea
Antiemetic in syringe driver
Levomepromazine
Mx hiccups
Chlorpromazine is licensed
Haloperidol is also used
Gabapentin is also used
Mx in hepatic mets
Dexamethasone
Example of bulk formin laxative, stool softner, osmotic laxative and stimulant
Bulk forming laxatives = ispaghula husk, methylcellulose
Stool softener = docusate sodium
Osmotic = lactulose or macrogol
Stimulant = senna or biscodyl (senna for opioid induced)