incorrect / hard Flashcards
Anion gap calculations
(Na + K) - (chloride + bicarbonate)
Bartter syndrome
autosomal recessive disorder which causes renal tubular disease, characterised by hypokalaemia hypochloraemia.
metabolic alkalosis are commonly seen in this condition
Fanconi syndrome
Fanconi syndrome is a type of renal tubular acidosis (type 2) which is associated with hypokalaemia and osteomalacia.
4 types of RTA
Type 1 RTA (distal):
inability to secrete H+ in distal tubule, causes hypokalaemia
Type 2 RTA (proximal):
decreased HCO3- reabsorption in proximal tubule
causes hypokalaemia and osteomalacia
Type 3 RTA (mixed)
extremely rare
caused by carbonic anhydrase II deficiency
results in hypokalaemia
Type 4 RTA (hyperkalaemic)
reduction in aldosterone leads in turn to a reduction in proximal tubular ammonium excretion
causes hyperkalaemia
causes include hypoaldosteronism, diabetes
Diabetes tests fasting and random glucose cut offs?
If the patient is symptomatic:
fasting glucose greater than or equal to 7.0 mmol/l
random glucose greater than or equal to 11.1 mmol/l (or after 75g oral glucose tolerance test)
IF ASYMPTOMATIC MUST BE ON 2 OCCASIONS
Diabetes HBA1C cut offs for diagnosis
a HbA1c of greater than or equal to 48 mmol/mol (6.5%) is diagnostic of diabetes mellitus
a HbAlc value of less than 48 mmol/mol (6.5%) does not exclude diabetes
AGAIN IF ASYMPTOMATIC MUST BE ON 2 OCCASIONS
impaired fasting glucose / glucose tolerance cut offs
A fasting glucose greater than or equal to 6.1 but less than 7.0 mmol/l implies impaired fasting glucose (IFG)
Impaired glucose tolerance (IGT) is defined as fasting plasma glucose less than 7.0 mmol/l and OGTT 2-hour value greater than or equal to 7.8 mmol/l but less than 11.1 mmol/l
osteoporosis in a man, what blood test should be done alongside routine
testosterone
what is nelson’s syndrome
Nelson’s syndrome occurs due to rapid enlargement of a pituitary corticotroph adenoma (ACTH producing adenoma) that occurs after the removal of both adrenal glands (bilateral adrenalectomy) which is an operation used for Cushing’s syndrome.
first drug offered in Parkinson’s where motor symptoms affecting quality of life
Levodopa
what may cause referred pain to the HIP from the lumbar spine
Femoral nerve compression may cause referred pain in the hip
Femoral nerve stretch test may be positive - lie the patient prone. Extend the hip joint with a straight leg then bend the knee. This stretches the femoral nerve and will cause pain if it is trapped
Parkinson’s medication that can cause: dystonia, chorea, and athetosis
Levodopa
unilateral vs bilateral foot drop main causes:
Unilateral: common perineal nerve
Bilateral: peripheral neuropathy
features of pulmonary hypertension on auscultation. of heart
Loud S2
what imaging is done in suspected NOF despite normal X-rays
MRI hip
cancer drug causing lung fibrosis
Bleomycin
cancer drug causing hemorrhagic cystitis
Cyclophosphamide
toxic bear
draw it or google it idk
Tonic or atonic seizures treatment
males: sodium valproate
females: lamotrigine
Myoclonic seizures treatment
males: sodium valproate
females: levetiracetam
Absence seizures (Petit mal) treatment
first line: ethosuximide
second line:
male: sodium valproate
female: lamotrigine or levetiracetam
carbamazepine may exacerbate absence seizures
Focal seizures treatment
first line: lamotrigine or levetiracetam
second line: carbamazepine, oxcarbazepine or zonisamide
Generalised tonic-clonic seizures treatment
males: sodium valproate
females: lamotrigine or levetiracetam
girls aged under 10 years and who are unlikely to need treatment when they are old enough to have children or women who are unable to have children may be offered sodium valproate first-line
ototoxic drugs
GENTAMICIN, furosemide, aspirin, cisplatin
4 D’s of pellagra (vit B3/ niacin deficiency)
Diarrhoea
Dermatitis
Dementia
Death
what do Auer rods suggest
APML (acute promyelocytic leukaemia)
mnemonics for HIV meds MOA
Integrase inhibitors -> raltegravir, elvitegravir, dolutegravir
Protease inhibitors -> think PRO-NAtion (protease and navir): indinavir, nelfinavir, ritonavir, saquinavir
Fusion inhibitors –> enfuvirtide
MMSE score cuts off for dementia
its out of 30 and 23 and lower suggests cognitive impairment / dementia
how does periductal mastitis present
Periductal mastitis is common in smokers and may present with recurrent infections. Treatment is with co-amoxiclav.
what is nikolsky’s sign
Nikolsky’s sign describes exfoliation and formation of blisters following rubbing the skin. This sign is nearly always present in SJS and toxic epidermal necrolysis (TEN).
what is Hutchinson’s sign
presence of a vesicular rash on the tip or side of the nose in herpes zoster ophthalmicus, caused by the reactivation of the varicella zoster virus in the trigeminal nerve. Its presence suggests ocular involvement.
what is seen on fundoscopy in Hydroxychloroquine induced retinopathy
bull’s eye maculopathy: red spot on the macula surrounded by a ring of retinal epithelial pigment loss
features of fracture of zygoma
Binocular vision post-facial trauma, painful to open mouth
diagnosis of chlamydia in woman
Vulvovaginal swabs for NAAT is the specimen of choice in females, as recommended by BASHH. (Urine first void sample first line for men)
what is sialadenitis
inflammation of the salivary gland likely secondary to obstruction by a stone impacted in the duct.
Syringomyelia presentation
Features:
-a ‘cape-like’ (neck, shoulders and arms)
loss of sensation to temperature but the preservation of light touch, proprioception and vibration
classic examples are of patients who accidentally burn their hands without realising
this is due to the crossing spinothalamic tracts in the anterior commissure of the spinal cord being the first tracts to be affected
-spastic weakness (predominantly of the lower limbs)
-neuropathic pain
-upgoing plantars
Autonomic features:
-Horner’s syndrome due to compression of the sympathetic chain, but this is rare
-bowel and bladder dysfunction
scoliosis will occur over a matter of years if the syrinx is not treated
What is associated with a lemon tinge to the skin
pernicious anaemia: The light yellow tinge is caused by the combination of pallor (due to the anaemia) and mild jaundice (caused by the haemolysis).
anti-emetic used in Parkinson’s
Domperidone
shyphylis tests and results interpretation
Serological tests can be divided into:
–non-treponemal tests
not specific for syphilis, therefore may result in false positives (see below)
based upon the reactivity of serum from infected patients to a cardiolipin-cholesterol-lecithin antigen
assesses the quantity of antibodies being produced
becomes negative after treatment
examples include: rapid plasma reagin (RPR) and Venereal Disease Research Laboratory (VDRL)
–treponemal-specific tests
generally more complex and expensive but specific for syphilis
qualitative only and are reported as ‘reactive’ or ‘non-reactive’
examples include: TP-EIA (T. pallidum enzyme immunoassay), TPHA (T. pallidum HaemAgglutination test)
the TP-EIA test has become increasingly popular in recent years
If the test has an A in the name (TPHA), it’s Always positive
If the test has an R in the name (RPR), it’s a Recent infection
Seborrhoeic dermatitis -organism
Malassezia furfur
which antibiotics may prolong the QTc
Macrolides (eg clarithromycin)
asthma diagnosis FEV1 bronchodilator reversibility %
> 12% FEV1 reversibility with bronchodilators