Neurological Flashcards
What is the 3rd most common cause of death in the UK?
Stroke
Fraction of Ischaemic Vs Hemorrhagic
87% Ischaemic
2 types of Ischaemic Stroke
2 types of Haemorrhagic Stoke
Thrombotic and Embolic
Intracerebral and SAH
Carotid Symptoms
Amaruosis Fugax and Hemisensory loss, transient loss of vision
Vertebrobasilar symptoms
Diplopia, Vertigo, Vomiting, Dysarthria, Ataxia and Visual loss
Treatment for Ischaemic and Haemorrhagic
Ischaemic = Altepase withing 4.5 hrs, mechanical clot clearance Haemorrhagic = Reverse anticoagulation with prothrombin concentrate and possible surgical intervention
Risk factors for SAH
50 yrs old, Female, afro-carribbean, smoking, HTN, cocaine and alcohol
Most common site of SAH
Berry Aneurysm in circle of willis
Symptoms of SAH
Thunderclap headache, may be sentinel bleeds - small leaks from aneurysm gives some symptoms but resolve themselves
Decreases level of consciousness, neck stiffness, loss of pupillary light reflex
Investigations of SAH
CT head and the LP if negative
Treatment of SAH
Prevent further bleeding/ re-bleeding
70% die before leaving hospital
Define Epilepsy
Transient occurrence of signs and symptoms due to abnormal electrical activity in the brain
When is a diagnosis of epilepsy made?
1) > 1 unprovoked seizure > 24 hrs apart
2) 1 unprovoked seizure + 60% probability of another
3) Diagnosis of an epilepsy syndrome
Focal/Partial Seizures
Activity is limited to one part of one brain hemisphere -
Generalised
Widespread seizure activity with many different subtypes
Absence
Activity throughout the whole brain - causes unconsciousness without convulsions - 2 to 10 seconds