Random Flashcards
what is type 1 hypersensitivity?
short onset
ige
allergy etc
what is type 2 hypersensitivity?
igG/igM
hours - days
haemolytic anaemia
what is type 3 hypersensitivity?
weeks
immune complex
SLE
what is type 4 hypersensitivity?
T cells
weeks
rash
stevens johnson
how does ADH affect portal blood pressure?
decreases portal blood flow
blood supply to foregut eg stomach is provided by ___
coeliac artery
Humeral neck fracture = damage to what?
axillary nerve / artery / vein
midshaft humeral neck fracture = damage to what?
radial nerve
suprachondular humeral fracture = damage to what?
median nerve
brachial artery
maybe ulnar
what is odansetron?
5HT3 antagonist
antiemetic
what is cyclizine?
H1 antagonist
antiemetic
what is metoclopramide?
D2 antagonist
anti emetic
metaplasia vs dyspasia?
metaplasia = transformation into another cell type dysplasia = dodgy change
what biomarker for ovarian cancer?
ca125
what is cea a biomarker for?
colon/bowel
what is epithelium in oesophagus made from?
stratified squamous
non keratinised
where is transitional epithelium?
bladder
called transitional because it looks different when bladder is bigger
what is the most important IMMEDIATE treatment for sepsis?
fluids
what does hyperparathyroidism look like on ECG?
high PTH = high calcium
tall T and short QT
drugs ending in -azole are?
antifungals
definition of sensitivity and specificity?
sensitivity = number of true positives specificity = number of true negatives
define prevalence and incidence?
prevalence = number of cases today incidence = number of new cases today
how to calculate the amount of units in alcohol?
% x ml / 1000
autonomy is..
allowing patients with capacity to have an input in their care
(must have capacity to have autonomy)
diadepesis is?
when neutrophils attract other inflammatory cells
treatment for hypercalcaemia?
fluids
if severe / symptoms you can use bisphosphonates & calcitonin
(calcitonin is released from C cells in the thyroid and lowers blood calcium)
cold peripheries are associated with what thyroid pathology?
hypothyroid (cold intolerance)
the MRC score is for..
breathlessness
1 is fine, 5 is cannot leave house
what is Felty’s syndrome?
rheumatoid arthritis
splenomegaly
neutropenia
what does a claw hand / unable to cross fingers / forearm flexor wasting / poor grip indicate damage to?
ulnar nerve
what does unable to open jam jar / poor grip / thenar muscle wasting indicate damage to?
median nerve
what is the usual 1st line SSRI for depression?
& a side effect?
fluoxetine
sleep disturbance / random dreams / ulcers
what is citalopram? what is a side effect?
SSRI for depression/anxiety
arrythmias
what are venlafaxine and duloxetine?
SNRI - serotonin noradrenaline reuptake inhibitors
primarily use for depression
raised BP
what class is amytriptilline?
TCA - tricyclic antidepressant
which antidepressants cannot be taken with lots of cheese etc?
MAOI - monoamine oxidase inhibitors eg phenelzine
what should you do before prescribing antidepressants?
- warn the patient they can cause increased anxiety/suicide for first few weeks
- warn patient they take 3-4 weeks to work
- make sure pt knows where to find help if they suicidal
- consider other treatment eg CBT
- tell patient not to stop them abruptly, they need to be tapered
what is sertraline?
SSRI
presentation of depression?
Low mood Anhedonia, a lack of pleasure in activities Low energy Anxiety and worry Irritability Avoiding social situations Hopelessness about the future Poor sleep, particularly early morning waking Poor appetite or over eating Poor concentration Physical symptoms such as abdominal pain
risk factors for depression?
stressful life events eg loss of a partner
family history
living alone
chronic disease
parental drug/alcohol abuse / childhood neglect
alcohol
Cushing’s / overuse of steroids
what 2 questionnaires can be used to assess depression?
PHQ 9
GAD 7
what 2 questionnaires can be used to assess depression?
PHQ 9
GAD 7
how are BRCA 1 and BRCA 2 inherited?
autosomal dominant
BRCA1 and BRCA 2 increase the risk of which cancers?
breast ovarian prostate skin digestive tract
what is the function of BRCA 1 and BRCA2 proteins?
repair double stranded breaks in DNA
a ‘triple negative’ breast cancer does not express receptors for:
progesterone
oestrogen
her 2
triple neg usually BRCA 1
5 risk factors for breast cancer?
alcohol smoking obesity BRCA1/2, TP53 etc family history radiation (eg several CXR) chemotherapy eg for Hodgkins diabetes female dense/glandular breasts gynaecomastia ashkenazi jew
what are the signs of breast cancer?
nipple inversion dimples palpable lump nipple/areolar exczema unilateral nipple discharge axillary lump change in breast size
T classification for breast cancer?
1 - less than 2cm
2 - 2-5cm
3 - 5cm +
4 - metastasised
treatment for oestrogen receptor positive breast cancer?
tamoxifen - for pre menopausal (selective oestrogen receptor antagonist/SERT)
letrozole/aromatase inhibitor for post menopausal (after menopause aromatase is the main source of oestrogen)
treatment of HER-2 receptor positive breast cancer?
herceptin (trastuzumab)
side affect - affects heart function
what is goosrhelin?
GnRH agonist
can be used in oestrogen receptor pos breast cancer
what 4 main things do they look for at the 8 week baby check?
hip dysplasia
congenital cataract
undescended testes
congenital heart disease eg VSD
what contraception can you use immediately after giving birth?
implant
injection
progesterone only pill
condoms
what contraception can you not use in the weeks following giving birth?
vaginal ring combined pill patch diaphragm/cap coil - unless you put it in within 48hrs
what are caspases?
enzymes that destroy the organelles in apoptosis
what type of necrosis is there in MI and tubular necrosis?
coagulative
denatured
what happens in caseous necrosis?
eg TB
macrophage form giant mutlinucleated cells
define ‘neoplasm’?
autonomous abnormal growth of cells
persists when stimulus removed
benign or malignant
what is the stroma around a neoplasm?
supportive tissue
eg fibroblasts, blood vessels
what is the difference between the way benign and malignant tumours grow on mucosa?
benign - exophytic - grow up and out
malignant - endophytic - grow down into and ulcerate
what is a papilloma?
benign
not glandular
carcinogenesis vs oncogenesis?
carcin - only for malignant
onco - benign or malignant
what specifically increases the risk of seminoma?
undescended testes