Palliative Care 2 Flashcards
how do you work out a breakthrough dose?
take a patients total daily dose of morphine/oxycodone and divide it by 6
breakthrough dose usually lasts four hours. in hospital, write it up as being two hourly max.
what should you do when starting opioid treatment?
offer patients PO MR morphine with an immediate release breakthrough dose
use 20-30mg MR morphine and 5mg immediate release morphine
laxatives should be co-prescribed
outline the different oral opioid conversions
oral codeine to oral morphine (divide by 10)
oral tramadol to oral morphine (divide by 5)
oral morphine to oral oxycodone (divide by 2)
oral morphine to oral hydromorphine (divide by 7)
IV morphine is 3 times stronger than PO
what are the guidelines for prescribing pain relief in people with renal impairment?
the metabolites of opioids build up in renal failure therefore be careful
alfentanil, buprenorphine and fentanyl are preferred
what are the guidelines surrounding the use of transdermal opioid patches?
transdermal opioids are used when a patient has stable pain or cannot have oral morphine
transdermal fentanyl is 100-150x more potent than morphine
transdermal 12mg fentanyl patch = 45mg oral morphine daily
patches are worn for 72 hours and take 12-24 hours to start working and reach a steady state
how do you convert a dose of oral morphine to a continuous subcutaneous infusion?
divide the daily dose of oral morphine by 3 to get the 24hour CSCI of morphine
where delirium and psychotic features are predominant, how do you treat agitation and restlessness?
haloperidol 1.5-10mg PO/SC stat.
may need a repeat dose at 30mins
where anguish and anxiety features are predominant, how do you treat agitation and restlessness?
midazolam 2.5-5mg SC/IM
may have a paradoxical effect and worsen symptoms early so frequent review is essential
what are the signs and symptoms of malignant spinal cord compression?
increasing neck or back pain
pain worse in bed and with cough or strain
weakness of extremities
loss of sensory, light touch, vibration or proprioception
incontinence/urinary retention
what is the management of malignant spinal cord compression?
dexamethasone 8mg stat (give 16mg in total in a day)
analgesia and bisphosphonates if not resolving
radiation or decompressive surgery
what can be used to treat metastatic bone pain?
strong opioids, bisphosphonates and radiotherapy
denosumab
what is the management of hiccups in palliative care?
chlorpromazine for intractable hiccups
haloperidol and gabapentin can also be used
what are the causes of SVCO?
lung cancer (most commonly right sided lung tumours), lymphoma intraluminal thrombus
what are the signs of SVCO?
early: periorbital oedema, facial swelling, cough, SOB
late: cyanosis, headache, altered mental status, raised JVP
what are the investigations and treatment of SVCO?
investigations: clinical examination, CXR, CT or MRI
examination: radiotherapy and chemotherapy if tumour, dexamethasone, lytic therapy if thrombosis, treatment of cause