Geries Flashcards
Presentation of digoxin toxicity
Disorientation
Vomiting
Mental confusion
Amnesia
Depression
Yellow visual field discolouration (xanthopsia)
What are lewy bodies made up of?
Alpha synuclein
When is ECT recommended
Life threatning depressive stupor
- especially when refusing to eat or drink
Treatment resistant depression
WHat does paralysis of the deltoid muscle cause
Weakness of shoulder abduction, particularly after 30 degrees of abduction (supraspinatus assists in the first 30)
Weakness of drawing arm forward and internal rotation
What causes osteomalacia
Lack or impaired metabolism of Vitamin D
What kind of drug is rifampicin
cytochrome p450 enzyme inducer
Interaction of rifampicin and warfarin
Increased metabolism of warfarin and a fall in INR
Drugs that can reduce INR when on warfarin
Rifampicin
Phenytoin
Carbamazepine
St johns wort
Drugs that can increase INR when on warfarin
Erythromycin
Metronidazole
Cipro
Cimetidine
Allopurinol
Triad of NPH
Gait disturbance
Incontinence
Cognitive impairment
CT features of NPH
Ventricular enlargement
Treatment of NPH
Large volume CSF removal (LP or lumbar drain)
If benefits from above - VP shunt placement
Type of gait in NPH vs PD
NPH - broad based shuffling gait
PD - narrow based shuffling gait
When does senile degenetative AS occur
Progressive calcification of the valve leaflets in response to long standing haemodynamic stress
What can cause subacute combined degeneration of the spinal cord
Vitamin B12 deficiency
Features of walderstroms macroglobulinaemia
Hepatosplenomegaly
Anaemia
Thrombocytopenia
Raised plasma viscosiity
Raised IgM
Immeediate treatment of increased plasma viscosity of walderstoms macroglobulinaemia
Urgent plasmapheresis
Treatment of mild - mod alzheimers
Acetylcholinesterase inhibiting drugs e.g.
- donepezil
- rivastigmine
- galantime
Treatment of severe alzheimers
Memantime
MMSE score for someone with severe alzheimers
< 10 / 30
Why does digoxin take a while to work
High degree of protein binding
Indicators of DIC
Hx of malignancy
Thrombocytopenia
Prolonged PT, APTT
Reduced fibrinogen levels
What do brainstem strokes cause
Contralateral weakness
Ipsilateral sympathetic pathway (horners syndrome)
Ipsilateral hypoglossal nerve causing tongue weakness on the affected side
Medial longitudinal fasciculus causing nystagmus as part of an ipsilateral internuclear opthalmoplegia
Body sensory loss on contralteral side
Facial sensory loss on ipsilateral side
Presentation of cerebellar strokes
Ipsilateral weakness
DANISH
- dysdiadokokinesis
- ataxia
- nystagmus
- intention tremor
- slurred speech
- hypotonia
Neuro exam of myasthenia gravis
Proximal muscle weakness
Ptosis
No muscle wasting or fasiculation
Sensation normal
Tone normal
Reflexes normal
Antibodies of myasthenia gravis
anti-acetylcholine receptor Abs
Treatment of myasthenia gravis
Acetylcholinesterase inhibitors
Oral corticosteriods
When is Lambert Eatson syndrome seen
Bronchial carcinoma
Neurology of Lambert Eaton syndrome
Proximal muscle weakness
May improve initially on exercise
Lessens as exercise is sustained
Reflexes reduced or absent
Presentation of GBS
Ascending pattern of progressive symmetrical weakness, starting in lower extremeties
Neuropathic pain may develop
Reflexes reduced or absent
Why does TMP exacerbate poor renal function
Compettive inhibition of creatinine secretion
Diagnosis for amyloidosis on histology post biopsy
Congo red staining
Who should you not give haloperidol to
PD patients
What can risperdione worsen
PD symptoms
Treatment of VT with no adverse features
Amiodarone
Presentation of SCC
Ulcerated nodular lesion
Surrounding paraesthesia
Hyperkeratotsis
What can SCC evolve from
actinic keratosis
What causes melanosis coli
Long term laxative abuse
Over time this leads to pigment deposition in the mucosa
What area of the brain do the cranial nerves pass through
Jugular foramen
Lesions that affect brocas area result in what
Expressive aphasia
Features of PSP (progressive supranuclear palsy)
Falls seen very shortly after onset of Sx
Symmetrical (proximal > distal) rigidity
Poor response to levodopa
Dysphagia
Decreased verbal fluency
Supranuclear gaze palsy (loss of vertical gaze)