random Flashcards
Patient with hypercalcaemia + high PTH with normal U&E’s
Is it primary or secondary hyperparathyroidism and why
Primary hyperparathyroidism
Why?
Primary is characterised by both elevated PTH and hypercalcaemia (due to abnormally active parathyroid glands e.g. adenoma)
Whereas secondary is characterised by high PTH and hypocalcaemia ( it is because of low calcium that there is a reactive overproduction of PTH)
Normal u+ e excludes tertiary hyperparathyroidism
Patient presenting with painful stiff shoulder with restriction of active and passive range of motion in abdication, internal and external rotation**
Adhesive capulitis aka frozen shoulder
- pts will complain of difficulty dressing / doing up bra + difficulty sleeping on the affected side
- common in middle aged females
- episodes can last 6months to 2 years
Management of adhesive capulitis
NSAIDs / physiotherapy ,
Oral corticosteroid / infra-articular corticosteroids
*no single intervention exists
Patient presents with
Pins and needles in thumb, index and middle finger
May need to shake hand to obtains relief
Signs: weakness of thumb abduction, Tinels sign
?
Carpel tunnel syndrome I.e compression of median nerve
Treatment of carpel tunnel syndrome
Wrist splints at night
Corticosteroid injection
*consider surgical decompression
Patient presents with feeling of becoming incontinent
No dysuria or frequency but commonly leaks when she coughs or laughs
Initial management?
+ investigations
Pelvic floor muscle training
- this is known as stress incontinence
RF: advancing age, previous pregnancy/childbirth, high bmi + fhx
Investigations:
1) bladder diary for min 3 days
2) urine dip and culture for infection
3) vaginal exam to exclude pelvic organ prolaps
Initial management for urgen incontinence
Bladder retraining
- trains you to hold more urine for longer periods of time
- lasts for a minimum 6 weeks
55 yo man started fitting around 5 mins ago
Admitted for ACS
PMH: tonic clinic epilepsy which is generally well controlled
Says normal but pulse 97 - has iv access in situ
Next step? And what is it
Give IV LORAZEPAM
patient has status epilepticus
- medical emergency
- priority is to terminal seizure as it can lead to irreversible brain damage
If ineffective after 10 mins
2nd line: (phenytoin or sodium val)
If ineffective after 30 mins
3rd line: (general anaesthesia )
CSF flows from the 3rd to the 4th ventricle via ?
Aqueduct of sylvuis
Patient 53 YO complains of cough after starting lisinopril? what would you change her meds to?
Angiotensin 2 receptor blocker (ARB) e.g. Losartan
Which of the following site do TB commonly reactivate in?
- Apex of lung
- Base of Lung
Apex of lung
why? site is better oxygenated than elsewhere allowing the mycobacteria to multiply more rapidly and then spread both locally and distantly.
Mechanism of resistance of penicillins by E.coli?
It produces beta-lactamase which cleaves the beta-lactam ring of the antibiotic
Presentation of bacterial vaginosis
Need 3/4
1 ) Grey discharge with a fishy odour (asymptomatic in 50% of patients)
2) Vaginal pH > 4.5 (raised vaginal pH) - urine dip
3) Clue cells on microscopy
4) Positive whiff test (addition of potassium hydroxide results in fishy odour)
Extra
- almost exclusively seen in sexually active women
- Management: oral metronidazole for 5-7 days (has > 50% chance of coming back
Most common cause of AKI (in someone fallen + remained laying for on floor all night)
Rhabdomyolysis
* Damaged muscles release myoglobin which is nephrotoxic and causes renal ischaemia, the pathology of acute tubular necrosis.
What stimulates platelet production
Thrombopoietin
Mallory weiss tear commonly occurs after …
severe bouts of vomiting
Safest blood group for transfusion if unable to cross match a patient
Type O (universal donor)
*has no anti-A or anti-B antibodies
Symptoms of hypocalcemia
- tingling of lips
- convulsions
- tentany (intermittent muscular spasms)
- Cramps
Mechanism of action of Aspirin
it suppresses production of thromboxane A2 and prostaglandin (cox -1/2 inhibitor)
> reduces the ability of platelets to aggregate
Mechanism of action of clopidogrel
Inhibits ADP receptors on platelets
Acute phase response includes
Acute phase proteins (ESR/CRP) Reduction of transport proteins (albumin, transferrin) Hepatic sequestration cations Pyrexia Neutrophil leucocytosis Increased muscle proteolysis Changes in vascular permeability
A middle-aged man presents with unilateral facial weakness and asymmetry, and ptosis. The doctor suspects either Bell’s palsy or an upper motor lesion. Upon clinical investigation, which of the following would be the most indicative of Bell’s palsy?
- postive fhx
- loss of tast in anterior 2/3 of tongue, ear pain and hyperacusis (heightened sensitivity to certain sounds)
- loss of taste in posterior 2/3 tongue, ear pain and deafness
2* due to damage to the facial nerve
Features include
1) Lower motor neuron facial nerve palsy - forehead affected*
2) Patients may also notice post-auricular pain (may precede paralysis), altered taste (anterior 2/3rds of tongue), dry eyes, hyperacusis
Erythromycin MOA
Targets protein synthesis in bacteria
What is ERCP (Endoscopic Retrograde Cholangio-Pancreatography ?
Type of x-ray and camera examination that enables your doctor to examine and/or treat conditions of the biliary system (liver, gall bladder, pancreas, pancreatic and bile ducts)
- enters from mouth
- can insert stent or remove stones
- Used to investigate jaundice/ stones
Clinical features of Cholangitis
Charcots triad: Fever, RUQ pain and jaundice
A 57-year-old gentleman presents to his GP with an acute onset back pain, causing sharp shooting pains to radiate down his buttocks and the back of his legs. He describes doing some heavy lifting in his garden just before the onset. You perform a full physical examination and find that the ankle jerk reflex is delayed. You suspect an intervertebral disk prolapse.
What level is disc prolapse likely to occur?
L5/S1
L3/L4
S2-S3
L5 -S1
Ankle reflex is typically delayed in L5/S1 disc prolapse.
L5 may also compress the nerve route leading to sciatica
An 18-year-old male presents to casualty with a depressed skull fracture. This is managed surgically. Over the next few days he complains of double vision on walking down stairs and reading. On testing ocular convergence, the left eye faces downwards and medially, but the right side does not do so. Which nerve is responsible?
Trochlear nerve
Features include :
- Vertical diplopia (diplopia on descending the stairs)
- Unable to look down and in
Management of SVC obstruction
Emergency: oxygen + dexamethasone 16 po IV
+ low dose morphine