Things I got Wrong in Mocks Flashcards
Mechanism of action of Neostigmine and Pyridostigmine
(BONUS : what are they used to treat?)
Blocks active site of acetylcholinesterase
∴ ↑ amount of Ach available to post-synaptic membrane
Myasthenia Gravis
Mechanism of action of Levodopa
Crosses the blood-brain barrier and is converted into dopamine which acts to reduce neurological symptoms
Mechanism of action of COX-i e.g. ibuprofen
Inhibits conversion of arachidonic acid to prostaglandins by inhibiting COX1 and COX2
Mechanism of action of Mannitol
↓ Intracranial pressure by setting up osmotic gradient between CSF and subarachnoid space
Define hyperplasia
Increased size of tissue due to increase of number of constituent cells
Things you see on blood film for IDA
Hypochromic
Microcytic
Poikilocystosis
Anisocytosis
Pencil cells
Thromobocytosis
Symptoms for the cause of IDA
Meleana
Heavy menstrual bleeding
Change in bowel habits
Nose/Gum bleeding
Haematuria
Pregnancy
Haematemesis
What protein carries iron around the body?
Transferritin
What blood test is used to confirm IDA?
Serum Ferritin
Low
1 Blood test to confirm Graves’ disease
TSH receptor antibodies
3 Accepted modalities for hyperthyroidism Tx
Thyroidectomy
Anti-thyroid drugs - Carbimazole
Radioactive iodine
3 Pathophysiological processes on Osteoporosis
Increased bone remodelling
↓ Osteoblast activity
↑ Osteoclast activity
↑ Bone resorption
Micro-architectural distortion
MOA Bisphosphonates
↓Osteoclast activity
Alongside bisphosphonates, what should be prescribed for Osteoporosis?
AdCal
(Vit D AND Calcium supplements)
Scoring tool to assess risk of developing osteoporosis
FRAX
Prev Medical history Qs after an epileptic fit!
Prev head injury?
Underlying brain disease?
Fever?
Born at full term?
Recently taken drugs or alcohol?
2 Ix that should always be taken after someone had an epileptic seizure
CT head
MRI Head
EEG
Histological features seen in UC
↑plasma cells in lamina propria
Ulceration
Crypt distortion
2 Major Elements in Pathophysiology of asthma
Airway hypersensitivity
Causes airway inflammation
and ∴ bronchoconstriction
Carcinoma definition
Malignant neoplasm of epithelium
Histological features of 1º carcinomas
Abundant mitotic figures
Areas of necrosis
Ulceration
Poorly circumscribed margin
Endophytic growth
Variable resemblance of normal tissue
How does the Chlamydia Screen Programme aim to control increase of STIs?
Control chlamydia through early detection and Tx of asymptomatic infection
1ºprevention =
Disease prevented from developing
e.g. Vaccinations, counselling, minimising risk factors
2º prevention =
Disease treated early, usually before symptoms present, to minimise consequences
e.g. screening programmes, contact tracing!
3º prevention =
Chronic disease managed to prevent further complications or further damage
e.g. control of DM, giving aspirin to someone who has already had a stroke to prevent a second
Sensitivity definition
Proportion with the disease that are correctly identified by the test
Specificity definition
Proportion of people without the disease that are correctly excluded by the test
False negative definition
Incorrectly reports a negative result
Population screening programmes in UK
Breast cancer
AAA
Cervical cancer
Diabetic eye
Infectious disease in pregnancy
Sickle cell disease
Thalassaemia
3 Diagnostic criteria for nephrotic syndrome
Proteinuria > 3g/L
Hypoalbuminaemia > 25 g/L
Oedema
5 Comps of Nephrotic syndrome and why they occur
- Hyperlipidaemia / Atherosclerosis
↑overproduction in liver - Thrombosis
bc renal loss of anti-thrombin III - Infection
Renal loss of Igs - Renal impairment
bc hypovolaemia - Anemia
Loss of iron
When is is suitable to send a urine sample for culture?
Pregnant
Male with UTI symptoms
Persistent / Severe Sx
Failed Abx
What clinical features might make you think Aortic Stenosis is severe?
Slow rising carotid pulse
Pulsus parvus/Pulsus tardus
Split S2
Ejection-systolic murmur
↓Pulse amplitude
Systolic thrill
BEST absolute gold standard Tx for Aortic Stenosis?
Surgical Aortic Valve replacement
In elderly, frail patients, what is the best option to treat Aortic Stenosis?
Trans-Aortic Valve Insertion
Adrenaline MOA
Alpha and beta adrenergic receptor agonist
Other than Adrenaline, what drugs can be given to minimise the severity of Anaphylactic shock?
IV Chlorpheniramine
IV hydrocortisone
List 10 Symptoms of a severe anaphylactic reaction
Pruritus
Bronchospasm
Chest tightness
Cough
Faintness
↓ BP
Diarrhoea
Hypovolaemic shock!!!!
Chest pain
Abdo pain
Oedema of lips and tongue
Cyanosis
Periorbital oedema
Erythema
How does thrombocytopenia present?
Petechial rash
Easy bruising
Mucosal bleeding - nose bleeds
How does Factor 8 & 9 def (Haemophillias) present?
Joint & soft tissue bleeds
Tx for Cryptococcal Meningitis
Liposomal Amphotericin B
When should you suspect Oesophageal carcinoma?
Progressive dysphagia
Weight loss
IDA
When should a thrombophilia screen NOT be done?
if thrombosis suspected or Px on anti-coagulation
Severe acute Ischaemia presentation
Loss of sensation
Weakness
Cold
Meningococcal meningitis - which serogroup in the MC in UK?
Group B
Meningococcal meningitis - which serogroup in the MC worldwise?
Group A
What does a Pos Rhomberg sign indicate?
Neuro condition
Cervical myelopath
Extra sign’s of Cushings
Thin skin
Easy bruising
PCS signs / symptoms
i dont know if this is right idk where i got this from
Hirsutism
Acne
Haemoptysis + Haematuria = ?
GOODPASTURE’S
Over 55 + IDA,
What do you do?
Refer via 2 week wait pathway
PE
If Well’s score is above 4, what do you do?
CTPA
PE
If Well’s score is below or equal to 4, what do you do?
D-Dimer
ACh coordinates ___
Both sympathetic and parasympathetic
Where can you NOT find noradrenaline?
Skin
Known AIDS + Owl eye inclusion bodies =
CMV colitis
HSV can cause?
Encephalititis
What is the MC cause of LBO?
Malignancy
Describe some symptoms of optic neuritis
Blurry vision
Painful when looking sideways
Describe the cell type affected in Bladder cancer
Transitional (urothelial) = MC
UNLESS SCHISTOSOMIASIS, then Squamous Cell
Haemachromotosis Signs / Symptoms
Slate grey skin
Pituitary insufficiency
Testicular atrophy
Deranged LFTs
What would you find in a temporal artery biopsy in GCA?
Granulomatous w skip lesions
Tx GCA
Oral prednisolone if no vision change
IV prednisolone if vision change
Status Epilepticus Tx
IV Lorazepam 4mg
Then again after 5 mins if not working
Then IV phenytoin
What can sideroblastic anaemia be caused by?
Vitamin B6 def
H.Pylori increases the risk of which malignancy?
MALT Lymphoma