Intro to stroke 3 - subtypes Flashcards
how are stroke classified
clinical classification:
Oxford Community Stroke Project classification (OCSP)
what are the different classifications of stroke
TACS - total anterior circulation syndrome
PACS - partial anterior circulation sundrome
LACS - LACunar syndrome
POCS - posterior circulation syndrome
Basilar artery occlusion
what is occluded in TACS and what is presentation (TACS criteria)
main artery to one hemisphere -
“full house” of effects (3 of 3)
BOTH OF:
- complete hemiparesis/numbness
- loss of vision on one side (hemianopia)
+ EITHER OF:
3a. loss of awareness on one side (inattention) NON-DOMINANT
3b. dysphagia - DOMINANT
what is occluded in PACS an what is the presentation
branch of the main artery
inbetween LACS and TACS
2 of 3 TACS criteria OR one higher cortical deficit (inattention or dysphagia) OR monoparesis
what is occluded in LACS and what is the presentation
small “perforation artery” - movement and sensation pathways affected
weakness/numbness of: - face + arm + leg - OR face +arm - OR arm + leg may have dysarthria ataxic hemiparesis no affect on higher function*
*no dysphagia, inattention or hemianopia
what is occluded in POCS and what is the presentation
any posterior artery
combo of symptoms including: loss of balance/coordiantion vertigo double vision dysarthria visual loss (hemianopia)
what occurs in basilar artery occlusion and what is the presentation
ischaemia in the pons
predominatly motor/oculomotor sings/symptoms
bilateral BUT asymmetrical
altered level of consciousness common - can progress over 12-24hrs
reduced responsiveness requiring critical care
what are the mortality rates for each type at 1 yr
TACs - 60%
PACS - 16%
LACS - 11%
POCS - 19%
what are the recurrence rates for each type at 1 yr
TACS - 6%
PACS - 17% (high early)
LACS - 9% (constant)
POCS - 20%
