Stroke Flashcards
dysarthria
difficulty with mechanics of speech
aphasia receptive
- temporal
- can’t understand or process speech (auditory or visual
expressive aphasia
-frontal
- can’t form language
- spoken or written
temperature change damages
hypothalamus or upper brainstem
pulse change (Bradycardia)
- pressure on brainstem and cranial nerves stimulate vagus nerve
- cervical spinal cord injuries (block SNS)
pulse change (tachycardia)
acute increased inter cranial pressure
factors affecting cerebral blood flow
systemic BP, cardiac output, blood viscosity
stroke
when there is ischemia (inadequate blood flow to brain) or haemorrhage resulting in brain cell death
non-modifiable factors
age, sex, prior TIA, hereditary
modifiable risk factors
- hypertension, heart disease (afib, MI), DM, increased serum cholesterol, carotid stenosis, smoking, overweight, early birth control pills
ischemic stroke
inadequate blood flow to brain from partial/complete blockage of artery
hemorrhagic stroke
bleeding into brain tissue in subarachnoid space
thrombotic stroke
- most common
- blood clots form in narrowed blood vessels (atherosclerosis – plaque)
- lacunae stroke
embolic stroke
occludes vessels in brain (foreign objects or clots)
- results form heart disease (afib)
intracerebral hemorrhage
- ruptured vessels