Stroke Flashcards
What is TIA
mini stroke
brief blockage of blood flow = temporary stroke like symptoms
dose NOT damage brain cells = no permanent damage or disability
how long does TIA last
few mins to few hours
fully resolved <24h
what is ischaemic stroke
blockage cuts off blood supply to brain
kills brain cells = permanent damage
symptoms usually very sudden
how long does ischaemic stroke last
few mins - hours - days
>24h
FAST
facial drooping or unilateral weakness
arm weakness/numbness
speech impairment
time to call 999
headache in intracranial haemorrhage
- sentinel headaches can occur in preceding weeks
- bleed in brain (not blockage)
- sudden severe headache, usually gradually increasing intensity
- THUNDERCLAP headache
headache in subarachnoid haemorrhage
- bleed between brain and membrane that covers it
- thunderclap headache - very severe and sudden
- neck stiffness
Patient comes in with very bad headache and neck stiffness. What is this
subarachnoid haemorrhage, call 999
Why should you not give aspirin in suspected stroke
First need to rule out haemorrhage, giving aspirin would make it worse
management of TIA and minor ischaemic stroke
- 300mg daily until diagnosis established
- if presenting within <24 hours and low risk of bleeding, consider DAT: C+A followed by C monotherapy, or, T + A followed by T or C monotherapy
- if not appropriate for DAT, give C monotherapy
- consider PPI as necessary
- secondary prevention following diagnosis
dose of aspirin for suspected TIA
300mg daily until diagnosis established
dose of aspirin for TIA or minor ischaemic stroke, in combination with clopidogrel in pt with low risk bleeding
300mg aspirin initially for one dose to be started within 24h of symptom onset
then 75mg OD for 21 days
dose of aspirin for disabling acute ischaemic stroke
PO or rectally
300mg OD for 14 days
start 24h after thrombolysis or within 24h symptom onset in people not receiving thrombolysis
management of ischaemic stroke
- thrombolysis with alteplase or tenecteplase if it can be given within 4.5 hours of symptom onset and haemorrhage excluded by imaging techniques
- if you have had thrombolysis, start on antiplatelet after 24h unless CI (PO or rectal 300mg OD for 14 days)
- some patients may be eligible for surgery
who can administer thrombolytis e.g. alteplase
only experienced medical staff within specialist stroke centre