Past papers Flashcards
(345 cards)
Difference between ABPA and EAA
ABPA- IgE, BE on CXR
EAA- IgG, mild fever, bad when in place where exposed
Tx of serotonin syndrome
Benzos
Severe- cyproheptadine or chlorpromazine
Late signs of mesenteric ischaemia
High lactate, acidosis and
peritonism develop at a late stage when there is established bowel wall necrosis
When is a hernia likely to be strangulated
If it is very tender
No bowel motions
Initial ix of SCD
Blood film
Blood supply to legs and buttock
Internal- buttock
External leg
So if claudication in both- stenosis in common iliac
If low fibrinogen, WBC, RBC, plt what is dx
DIC from PML RARA
15:17
If calf pain on exertion, pulse not findable what is the mx
Exercise programme since on claudication
Tx of GBS
IVIG
25 yo with long standing cough, haemoptysis with rings on CXR
CF- not cancer since unlikely under 40
Sx of vesicular reflux
Extensive renal scarring can cause renal insufficiency,
end-stage renal disease, renin-mediated hypertension
Renal USS showed dilated calyces and
cortical thinning bilaterally
Increased tone, hypertensive, tachycardia and dilated pupils dx
Serotonin toxicity
TCA OD sx and tx
Long QRS
Dilated pupils
Arrythmias and seizures
Sodium bicarbonate
BB OD sx
BB have poor CNS penetration and causes bradycardia and hypotension; it would not
cause CNS depression
Common arrhythmia after CBAG
AF
Sx of candiasis on men
Diabetic
Balanitis
Itchy white discharge
Levels of diabetic retinopathy
Background (mild NPDR)- 1 or more micro aneurysm
Mod- cotton wool, haemorrhages, hard exudate
Severe- (pre proliferative)- blot haemorrhages and microaneurysms in 4 quadrants
venous beading in at least 2 quadrants
Proliferative- new vessels on disc or elsewhere
CURB65 meaning and management
AMTS <8
Urea >7
R >30
B <90/60
>65
0/1- can discharge
2- can admit to ward
>3- HDU/ICU
Large vs SBO on presentation
Small- early vomitting
Large- if recurrent- think volvulus, early gross abdominal distention
Pain tx for sickle cell crisis
Fluids
IV morphine
Exchange transfusion if not working
When to use each type of test for significance in study
T test - normal distribution
Paired- if part of same group- i.e same group before and after treatment
Unpaired- comparing different groups
Mann–Whitney U-test- not normal distribution
Cohort study vs case control study
Case control- start with outcome- i.e disease and look back at factors
Cohort- prospective and retrospective
Start with exposure and either follow over time (pros) or look to see if developed disease (retro)
Specificity and sensitivity formula
Spec= TN/ without disease so TN/TN+FP
Sens= TP/with disease so TP/TP+FN
NPV and PPV formula
NPV= TN/TN+FN
PPV= TP/TP+FP
Determine accuracy of test to get it right/wrong
Takes into account prevalence