General / systemic anti-cancer treatments / radiotherapy misc Flashcards
List the most common types of solid organ cancers
- Lung
- Breast
- Bowel
- Prostate
- Skin
- Head and Neck
Outline the cancer target for the UK
The time between when cancer is first suspected and started treatment = < 62 days
(includes confirmed diagnosis)
What % of cancer patients are meeting the 62 day target
60% in June 2023
State some modifiable and non-modifiable risks factors for developing cancer (general)
Modifiable:
- Tobacco use / smoking
- Alcohol
- Diet
- Obesity / sedentary lifestyle
- Acquired infections e.g. Hepatitis B, HPV
- Immunodeficiency
Non-modifiable:
- Increasing age
- Family history / genetic component e.g. BRCA
Briefly outline the 5 stages of WHO performance status
0 = Normal
- Fully active without restriction
1 = Some restriction in physical activity
- Restricted in physically strenuous activity
- However ambulatory
- Able to carry out light work e.g., light house work, office work
2 = More significant restriction
- Ambulatory
- Capable of all self-care
- Unable to carry out any work activities
- Up and about more than 50% of waking hours
3 = Significant restriction
- Capable of only limited self-care
- Confined to bed or chair more than 50% of waking hours
4 = Completely disabled
- Cannot self care
- Totally confined to bed or chair
5 = Dead
State some common side effects of chemotherapy (think by system, head to toe)
Head / brain:
- Hearing loss / tinnitus
- Alopecia
- Fatigue (late)
- Insomnia (late)
- Dizziness (late)
GI tract:
- Mucositis
- Diarrhoea
- N&V
- Dry mouth
- Change to smell / taste
Lungs / heart:
- Pleuritis (late)
- Pericarditis (late)
- Pneumonitis
- Dyspnoea
- Cardiovascular complications (late)
- Risk of VTE
Liver:
- Liver dysfunction
Urinary system:
- Cystitis
- Renal insufficiency
- Tumour lysis syndrome = AKI
Skin / nerves:
- Peripheral neuropathy (late)
- Skin sensitivity
- Rash
Bones:
- Myelosuppression / anaemia / thrombocytopenia / leukopenia = risk of neutropenic sepsis
- Arthralgia (late)
- Myalgia (late)
State some psychosocial effects of chemotherapy
- PTSD
- Depression
- Social isolation
- Strained relationships with partner / family / friends
- Employment / schooling difficulties
- Financial burden (e.g. missing work)
State some specific long term impacts of chemotherapy (think by system, head to toe)
Head:
Loss of higher brain function / memory loss
Cataracts
Peripheral neuropathy / Raynaud’s
Tinnitus / deafness
Lungs:
Pulmonary fibrosis
Heart:
Coronary artery disease
HTN
Ventricular failure
Renal:
CKD
Haemorrhagic cystitis
Renal tract malignancy
Reproductive organs:
Infertility
Primary hypogonadism
Bones:
Femoral head necrosis
Osteoporosis
Other:
Secondary malignancy
Fatigue
Psychosocial impact
State how the following long-term chemotherapy complications are monitored
Head:
Loss of higher brain function / memory loss
Cataracts
Peripheral neuropathy / Raynaud’s
Tinnitus / deafness
Lungs:
Pulmonary fibrosis
Heart:
Coronary artery disease
HTN
Ventricular failure
Renal:
CKD
Haemorrhagic cystitis
Renal tract malignancy
Bones:
Femoral head necrosis
Osteoporosis
Head:
Loss of higher brain function / memory loss = baseline MMSE
Cataracts = yearly fundoscopy
Peripheral neuropathy / Raynaud’s = neurological assessment yearly for first 3 years
Tinnitus / deafness = baseline audiometry
Lungs:
Pulmonary fibrosis = baseline tests and yearly respiratory examination
Heart:
Coronary artery disease
HTN
Ventricular failure = echocardiogram
Renal:
CKD = baseline U&Es and yearly BP and urinalysis
Haemorrhagic cystitis
Renal tract malignancy
Bones:
Femoral head necrosis = yearly clinical examination
Osteoporosis = bone density scan
State some general common side effects of radiotherapy (immediate and long term) which are not organ specific
Side effects of radiotherapy are usually local - depending on anatomical site
Immediate side effects:
Tend to resolve within a few weeks
- Local skin reaction (erythema, desquamation)
- Hair loss in affected area
- Nausea
- Diarrhoea
- Mucositis
- Fatigue
- Lymphoedema
- Dysuria / radiation cystitis
- Sterility
Long term side effects:
Occurs months to years after a course of radiation (from excessive extracellular matrix, deposition of collagen and fibrinogenesis)
- Radiation-induced fibrosis
- Atrophy
- Neural or vascular damage
- A range of endocrine effects (e.g. diabetes, hypothyroidism)
*Small risk of a secondary malignancy, due to radiation-associated DNA damage
State some common side effects of targeted therapy
- Diarrhoea
- Fatigue
- Coagulation issues
- Wound healing issues
- Hypertension
- Mouth sores
- Mail changes
- Skin problems, rash or dry skin
Outline in very basic terms how radiotherapy works
Radiotherapy uses high energy, ionising radiation to eliminate cancer cells (ionising means charged particles, which then deposit energy into the cells of the tissues they pass through)
Local technique - aim is to maximise the dose of radiation delivered to cancer cells whilst minimising exposure to healthy cells
Causes cell death in one of two ways:
1) Triggering apoptosis by causing significant DNA damage
2) Preventing proliferation, by causing single and double-stranded breaks in DNA (known as mitotic cell death)
State the unit of radiotherapy dosage
‘Grays’ (commonly abbreviated as Gy)
- Quantifies amount of energy absorbed
State the 2 most common methods of delivering radiotherapy
2 primary methods of delivering radiation to tumours:
1) External beam radiation:
- Delivered from outside the body by aiming high-energy rays
2) Internal radiation (brachytherapy):
- Uses radioactive material in catheters or seeds
- Delivers high doses of radiation from inside the body directly into the tumour site
+ systemic treatment, with radioactive substance (injected/swallowed)
State 2 solid cancers for which internal radiotherapy (brachytherapy) are commonly used
- Cervical cancer
- Prostate cancer
State some common side effects of radiotherapy given in the head & neck region
Head:
- Hair loss
Mouth:
- Dry mouth
- Mouth and gum sores
- Tooth decay
Neck:
- Dysphagia
- Jaw stiffness
- Lymphoedema
State some common side effects of radiotherapy given in the region of the chest
- Dysphagia
- Dyspnoea
- Radiation pneumonitis
- Radiation fibrosis (permanent lung scarring as a result of untreated radiation pneumonitis)
State some common side effects of radiotherapy given in the abdominal region
- Abdominal pain / cramping
- Nausea and vomiting
- Diarrhoea
- Anorexia
State the 3 main classes of analgesics
Opioids
Non-opioids
Adjuvants (drugs whose primary indication is not for pain)
State some examples of adjuvant drug categories and some examples
Antidepressants e.g. Amitriptyline, Duloxetine
Anticonvulsants e.g. Gabapentin, Pregabalin
Benzodiazepines e.g. Diazepam, Clonazepam
Bisphosphonates e.g. Zoledronic acid, Pamidronate
Steroids e.g. Dexamethasone
Give some examples of weak opioids
- Co-codamol
- Codeine
- Dihydrocodeine
- Tramadol
Give some examples of strong opioids
- Morphine/ Diamorphine
- Oxycodone
- Fentanyl
- Buprenorphine
State some common initial side effects of opioids, as well as common ongoing side effects
Initial side effects:
- Nausea and vomiting
- Drowsiness
- Dizziness / lightheadedness
- Cognitive impairment
Ongoing side effects:
- Dry mouth
- Constipation
State medications that bone metastasis pain responds well to
- NSAIDs
- Bisphosphonates
State the conversion ratio of codeine to morphine
Codeine to Morphine ratio is 10:1
e.g. 1g of Morphine is equivalent to 10g of Codeine
State a form of immediate release morphine and 2 forms of slow release morphine (as well as their methods of administration)
Immediate release:
- Oramorph liquid 10mg/5ml
Slow release:
- Zomorph capsule BD (12 hourly)
- MST tablets BD
Also parental (subcut) Morphine sulphate for injection
State the equation for working out regular background dose of morphine as well as working out breakthrough (PRN) dose of morphine
1) Calculate total daily dose (total amount of morphine taken in a 24 hour period)
Regular background dose = total daily dose / 2
Breakthrough (PRN) dose = total daily dose / 6
How long does a Fentanyl patch take to become effective and how regularly does a patch need to be changed?
Takes 12-24 hours to reach a steady state release (although will get some benefit initially)
Patch needs to be replaced every 72 hours (3 days)
NOT renally excreted = good for poor renal failure
State 2 medications that should always be written up with opioids
1) Anti-emetic
2) Laxative
What is the maximum limit for PRN doses given in 24 hours in palliative care
Limit PRN doses to 1 hourly
Maximum of 6 doses in 24 hours, at which point they need medical review
State some signs/symptoms of opioid overdose
- Pintpoint pupils
- Reduced RR (espiratory depression)
- Vomiting
- Drowsiness
- Confusion
- Myoclonic jerks
- Hallucinations
State some possible causes of opioid overdose
- Recreational drug use e.g. Heroin users
- Error of prescribing
- AKI
- Rapid escalation of opioid dosage
- Additional interventions to reduce pain e.g. nerve block
State 7 essential things to be done for a controlled drug prescription
- Name, DOB (age if >12) and address of the patient
- Form of the preparation (e.g. tablets)
- Include the strength of the preparation (if appropriate)
- Include the total quantity in both words and figures (e.g. 20 (TWENTY) tablets, 100 (ONE HUNDRED) millilitres)
- Include the dose to be taken
- Diagonal line underneath prescription OR “no more items” under the last prescription
- Dated, signed, GMC number and include the prescriber’s address
State how opioid toxicity should be managed
1) Stop opioids
2) Check renal function (U&Es)
3) Speak to senior
State the 3 most common sites of cancer metastasis and how it may present
- Brain
- Bone
- Lung
Brain = headaches, seizures, or neurological deficits
Bones = pain and fractures
Lungs = cough, shortness of breath, or chest pain
State the 6 hallmark features of cancer
- Resist cell death
- Angiogenesis
- Sustain proliferative signalling
- Evade growth suppressors
- Activate invasion and metastasis
- Enable replicative immortality
State the 3 most common cancers
State the 3 most deadly cancers (in terms of highest number of deaths)
Most common:
1. Breast / prostate
2. Lung
3. Bowel
Highest number of deaths:
1. Lung
2. Breast / prostate
3. Bowel
State 3 other treatments that radiotherapy can be combined with
Radiotherapy alone
- Surgery
- SACT
- Hormonal treatment