3B past papers Flashcards
What is the first investigation for PE?
Chest X-Ray, then Wells’ score
If PE is unlikely, what is the next investigation?
D-Dimer
If PE is likely, what is the next investigation?
CTPA (or V/Q scan)
USS Doppler lower leg within 4 hours if clinically indicated
Which investigation measures intra-ocular pressure?
Tonometry
What is the pathophysiology of pleural effusions?
Increased capillary permeability due to exudate
What is a differential of PCOS and what is the appropriate investigation?
Androgen secreting tumour
CT adrenals
What are the components of the sepsis 6 (BUFALO)?
Blood cultures Urine output Fluids IV Antibiotics IV Lactate Oxygen
What are some risks for non-accidental injury in children?
Domestic abuse
Parent with mental health problems
Delayed emotional attachment e.g. premature baby
Alcohol/drug use
If non accidental injury is suspected what is the investigation of choice?
Skeletal survey (X-Ray whole body)
What is seen on slit lamp examination in anterior uveitis?
Keratic precipitates on cornea
Ciliary flush/cell and flare
Hypopyon
What is an infective cause of anterior uveitis?
VZV
In secondary eczema infection with staph and/or herpes, what must be stopped?
Topical steroid creams
Which immunosuppressants are not used in SLE?
Anti-TNFs
Which drugs can cause low mood as a side effect?
Isoretinoin COCP Lithium Anti-epileptics Doxycycline
What is seen on examination in a patient ascites?
Shifting dullness
Fluid thrill
What investigations are needed in a patient with ascites?
Diagnostic ascitic tap/paracetesis
Abdominal ultrasound
CT abdomen
What investigations are required in suspected Lymphoma patient?
FBC
BM biopsy
PET/CT
What is the treatment of primary generalised seizures?
Sodium valproate
What are the components of a health economic evaluation?
Cost-effectiveness of a treatment in terms of costs and benefits, and in terms of increments - can be measured in natural units, monetary, or QALY
Define QALY.
Quality of life (Y) x Quantity of life (X)
Define DALY.
Years lost to premature mortality x years lost due to disability
What does a QALY take into account?
Age, causality, rareity, severity, and end of life
What is a subarachnoid haemorrhage?
Bleeding between the arachnoid and pia mater
What is the cause of a fixed dilated pupil?
3rd (oculomotor) nerve palsy
Increased ICP from posterior communicating artery aneurysm/SAH
What is the management of SAH?
ABCDE Phone neurosurgery IV fluids, analgesia, pre-op bloods CT and CT angiogram for aneurysm Nimodipine to reduce vasospasm LP after 12h if CT -ve
What is seen on CT in SAH?
Pooling of blood in cisterns, ventricles, and sulci
Name three complications of SAH.
Rebleeding
Hydrocephalus
Cerebral ischaemia
Name four features of brainstem death.
Absent pupillary response Absent corneal reflex Absent gag reflex Absent cough reflex No motor response No respiratory movement when patient is disconnected from a ventilator
What is done in GP as part of screening for microvascular complications of diabetes?
Fundoscopy
eGFR/urine A:C ratio
Neurological and diabetic foot examination
What class of drug is an atypical antipsychotic?
Dopamine antagonist
What talking therapies are available for psychotic patients?
CBT
Family therapy
Interpersonal therapy
What is important to check on breast examination?
Axillary and cervical nodes
Check other breast
What three investigations are required in suspected retinal detachment?
Visual field testing (peripheral loss)
Fundoscopy - detached retinal fold
Slit lamp microscopy - detached retinal fold
Give three causes of retinal detachment.
Recent eye surgery
Eye trauma and vitreous haemorrhage
Diabetic retinopathy
What are the guidelines with eye conditions and driving?
One eye affected - ask if treatment affects driving.
Treatment in both eyes - inform DVLA
Where is transitional cell carcinoma found?
Bladder, renal pelvis, ureter
What are four risk factors for bladder cancer?
Smoking Aromatic amines Aniline dye/rubber Schistosomiasis Cyclophosphamide
Where does cauda equina start?
L1
What are the bowel/urinary symptoms of cauda equina?
Retention first, incontinence later
What are the investigations for lung cancer?
Bronchoscopy and biopsy
CT whole body
PET scan +/- bone scan
What features suggest small cell cancer
Paraneoplastic features
Central tumour
What is the surgical treatment of lung cancer?
Lobectomy
Pneumonectomy
Wedge resection
Give four causes of constipation in an elderly patient.
Dehydration
Malignancy
Immobility
Lack of fibre
What are the components of the health transaction?
Persons health needs and demands
Providers services that are supplied
How is it paid for
What is the main difference between different healthcare systems?
How it is paid for
Name 5 barriers to accessing healthcare.
Costs Geography Awareness/education Risk perception Physical barriers
What are the components of health economics?
Opportunity cost
Economic efficiency
Equity
Economic evaluation
What is opportunity cost?
Sacrifice e.g. benefits lost from not allocating resources to the next best activity
What is economic efficiency?
Resources allocated to maximise benefit
What is an economic evaluation?
Comparative study of costs and benefits of healthcare interventiosn
What does a QALY measure?
Disease burden
What is the incremental cost analysis ratio?
Cost intervention A - cost intervention B
/
Benefit intervention A-benefit intervention B
What type of antibiotic is tazocin?
Tazobactam = b-lactamase inhibitor Piperacillin = penicillin
What is the most common type of renal cancer?
Renal (clear) cell carcinoma
What is the treatment of stable angina?
Aspirin and statin if not CI
GTN for symptoms
BB or CCB (non-dihydropyridine)
What is seen on spirometry in asthma?
FEV1 <70% predicted
FEV1/FVC ratio <0.7
What is the ABPI value that indicates ischaemia?
0.9-0.6 = intermittent claudication
0.3-0.6 = rest pain
0-0.3 = impending gangrene
When is a stem cell transplant given?
When patient is in remission
What is the treatment of acute heart failure?
LOON IV furosemide Morphine Oxygen Vasodilators/inotropes Discontinue beta blockers
Define incidence.
Number of new cases per 100,000 per year
Give an example of confounding?
Grey hair gives you AMD
What are three talking therapies for psychosis?
CBT
Interpersonal therapy
Family therapy
What test shows chronic hepatitis B?
HbsAg - surface antigen
HbcAb - core antibody
What is the mechanism of aspirin?
Thromboxane A2 inhibitor
When should IV amiodarone and IV adrenaline be given in cardiac arrest?
If pulseless electrical activity
in VT, if three shocks have been given with no response
Give two medications used to maintain sobriety.
Antabuse (disulfiram) - makes you feel sick when you drink
Acamprosate - stops cravings
How is Conn’s syndrome diagnosed, apart from renin:aldosterone ratio and hypokalaemia?
Selective adrenal venous sampling
Which medications interact with lithium?
Amiodarone
Amitriptyline
St Johns Wort
What are the symptoms of serotonin syndrome?
Altered mental state
Autonomic excitation eg hyperthermia
Neuromuscular excitation
What is the treatment of serotonin syndrome?
Cyproheptadine
Why is lorazepam preferred to diazepam?
Decreased risk of respiratory depression
What are the components of the paediatric sepsis 6?
High flow oxygen
IV/IO access and take blood cultures and bloods
IV/IO antibiotics
IV fluids
Involve specialist help early
Consider inotropes early: dopamine or adrenaline given via peripheral line
What are the risk factors of oesophageal cancer?
Barrett’s oesophagus
Obesity
Smoking
Alcohol
What score indicates prognosis of PE within 30 days?
Pesi score
What are the doses of adrenaline in anaphylaxis and cardiac arrest?
Anaphylaxis: 0.5mls of 1 in 1000 IM
Arrest: 10mls of 1 in 10000 IV
What is the pathophysiology of Graves’ eye disease?
TSH receptors on extra ocular muscles
TSH receptor stimulating antibodies
What is a side effect of levothyroxine?
Can worsen angina
What is the score that predicts a difficult intubation?
Mallon-Pati
Morphine –> diamorphine
divide by 2
How is compartment syndrome prevented against?
Ice and elevation to decrease pressure in the compartment
What is the mode of action of rivaroxaban?
Factor Xa inhibitor
What are the transmission rates following a needle stick injury in HBV, HCV, and HIV?
HBV - 30%
HCV - 3%
HIV - 0.3%
What is the mode of action of hydroxyurea in sickle cell anaemia and polycythaemia?
SC: increases foetal haemoglobin
PV: decreases platelets
When is BiPAP and CPAP given?
CPAP - type 1 resp failure
BiPAP/NIV - Type 2 resp failure
Name four thromboprophylaxis measures for PE.
Compression stockings
Encourage mobilization
Leg elevation
Intermittent compression device - flowtron
What are the two causes of Down’s syndrome?
Trisomy 21
Non-disjunction
What drug class is colchicine?
Plant alkaloid
Which antibodies are present in coeliac disease?
Anti-gliaden
Anti-endomysial
Anti-tissue transglutaminase
What are the deficiency states of vitamins D, E, A, and K?
D - osteomalacia
E - peripheral neuropathy
K - bleeding disorder
A - night blindness
Why might malaria prophylaxis not work?
Poor compliance
Resistance in that area
Incorrect prophylaxis e.g. for plasmodium falciparum
What is the diagnostic test for malaria?
Thick and thin blood films, 3 taken on 3 subsequent occasions
What are the signs of cerebral malaria?
Confusion, seizures, coma
What are the signs of lithium toxicity?
Tremor
Confusion
Ataxia
Irritability
What must you check before starting lithium?
TFTs
eGFR
FBC
What nerve root corresponds to the median nerve?
C8-T1
What are the signs of bulbar palsy?
Dysarthria and dysphagia
Drooling
Absent gag reflex
Tongue fasciculations
What is amiodarone and its mechanism?
Class III anti-arrhythmic agent - K+ channel blocker
What is flecainide and its mechanism?
Class Ic anti-arrhythmic agent - Na+ channel blocker
In Ramsey Hunt syndrome, where does the HSV virus reside?
Geniculate ganglion of facial nerve
What enzyme do NSAIDs inhibit and what substances do they inhibit the production of?
Cyclo-oxygenase
Prostaglandin and thromboxane
What is the cause of confusion in myeloma?
Hypercalcaemia
Uraemia
Which bone scan Is used in myeloma and why?
Skeletal survey - technetium scan looks at osteoblastic activity and plasma cells secrete IL-6 which inhibits osteoblasts and increases osteoclasts
How can a person apply for non-NICE funded treatment?
Private funding
Charity drug fund
Individual funding - consultant can apply
Where does spironolactone act?
Collecting ducts
What are the components of the mental state examination
Appearance, behaviour, mood/affect, speech, thoughts, insight, cognition
What is the treatment of erythema nodosum?
Analgesia, compression, elevation