Oncology/Pall Care Flashcards
Oesophageal cancer Staging
Dx - Endoscopy
T - EUS
M - CT and PET
N - Surgery and PET
Clinical Trials
Phase 0 - Animal Trials
Phase 1 - Small Clinical trial in health people - Dose & SE
Phase 2 - Larger Clinical Trial vs placebo
Phase 3 - Response to new therapy vs standard
Phase 4 - Evaluation of clinical use
Colorectal Carcinoma surveillance
Post Operative Colonoscopy
- Metasynchronis ca
- Anastomotic Ca
- Colonic polyps
Familial Adenomas Polyposis
- 95% risk of CRC
- Hundreds to thousands of polyps
- Colectomy ~20’s
- 25% has spontaneous mutation
- Autosomal dominance
Extra Colonic Disease of FAP
- Desmoid tumours - non metastatic (local symptoms)
- Duodenal polyps
NSCLC Stages
Stage I - Solitary tumour without regional or mediastinal lymph node involvement Stage II - Tumour > 5cm - Regional lymph node involement - Tumour with invasion into local structures (chest wall or unilateral) or located near the carina Stage III - Mediastinal lymph node involvement Stage IV - Metastatic disease - Ipsilateral malignant pleural effusion
Tumor lysis syndrome (TLS)
is an oncologic emergency that is caused by massive tumor cell lysis and the release of large amounts of potassium, phosphate, and uric acid into the systemic circulation.
Radiotherapy related lung ingury
- Pneumonitis
- treated with steroids
- CXR can look normal
- Onset 4 to 12 weeks post radiation - Radiation Fibrosis
- Onset 6-12 months post radiation
- Treatment unknown (steroids unlikely benefit)
Complications of Ovarian Ca
- Malignant bowel obstruction
- Treatment of associated symptoms consider buscopan (Hyoscine), not motility agents
Chemotherapy induced nausea
1st - 5HT3 receptor antagonist (Ondansatron)
2nd - Glucorticiods (Dexamethazone)
3rd - Neurokinin-1 antagonists (Aprepitant)
4th - Olanzepine
Chemotherapy induced nausea types
- Acute <24hrs
- Delayed >24hrs
- Anticipatory - Rx lorazapam and effectively Rx Acute
Metoclopromide SE
Dopamine Receptor Anagonists
Movement - treated with benztropine - Restlessness (akathisia) - Focal dystonia - Extrapyramidal effects such as oculogyric crisis (rare) Infrequent - hypertension - hypotension - hyperprolactinaemia leading to galactorrhea - Constipation - depression - headache
Treatment for malignant bone pain
- 1st line - NSAIDs
- 2nd line - bisphonates
- 3rd line - Radiation therapy
ECOG scale- Key Points
Prognostic of Survival Stage 2 - Independent ADLs - Out of bed >50% of day - no higher for chemo Stage 3 - Assisted ADLs Stage 4 - >50% bed bound Stage 5 - Dead
Opioid eqivalents
Morphine
- oral 3:1 IV
- Oxycodone 1:2 oral morphine
- Hydromorphone 5:1 Morphine
- Codeine 10:1 oral morphine
- Tramadol 10:1 oral morphine
Hydromorphone
- Oral 3:1 IV
Fentanyl
- Patch 12mcg = 36mg oral morphine per 24hrs (caution in niave pts)
- Subling (Abstral) - rapid <10min (breakthrough)
Opioid Principles
- in Ca never cap breakthrough
- Never use fentanyl patch if titrating
- Opioid rotation to decrease tolerance if breakthroughs are not working
Preferred opioids in patients with renal impairment:
1) Fentanyl
2) Methadone
3) Tramadol (caution if on SSRI,TCA)
4) Oxycodone (use with caution-Prolonged elimination of oxycodone and its metabolites in renal impairment)
Avoid these opioids in patients with renal impairment
1) Morphine
2) Codeine
3) Dihydrocodeine
4) Dextropropoxyphene
Opioid Conversion
T 1 - Tramadol
O 2 - Oxycodone
M 3 - Morphine
H 5 - Hydromorphone
Opioid and QT prolongation
Safe to use in renal failure.
But risk of QT prolongation.
Which opioid increases the risk of convulsions
Pethidine is metabolized to norpethidine and therefore increases the risk of convulsions.
The most effective treatment for opioid-induced painful constipation is
- methylnaltrexone
- Subcut
- Fiber supplementation, polyethylene glycol, and docusate are rarely effective in cases of severe opioid-induced constipation
- Note methylcellulose is a bulking agent
Opioids in renal impairement
- Morphine’s metabolite is renally cleared Therefore use: - Buprenorphine - fentanyl - methadone
Breakthrough Opiods
- 1/6 of regular dose