Chapter 25 - Stroke Flashcards
How is a TIA defined?
Brief episode of neurological dysfunction caused by ischemia
No infarct on imaging
Acute sx of stroke depend on what factors?
Location of injury Duration of effect Edema Changes to blow flow Blood vessel involved
When is the term perinatal stroke applied?
Between 20 weeks gestation and first 28 days of life
What circulation is affected most frequently?
Anterior:
anterior cerebral,
middle cerebral
Anterior choroidal
What % of the brain does the MCA territory cover?
50-60%
What is the most common cause of subarachnoid hemorrhage?
Aneurysm of the anterior communicating artery
What are two major forms of infarction in kids?
Arterial ischemic stroke
Sinovenous thrombosis
What are the sx of anterior circulation strokes?
Hemiparesis Hemianesthesia Aphasia Visualspatial Visual field cuts
What are sx of stroke in posterior circulation?
Ataxia
Vertigo
Vomiting
What are the triad of sx post ACA hemorrhage?
Impaired episodic memory
Confabulation
Personality change
What are deficits resulting from a stroke that affects left ACA territory?
Right leg weakness Right leg sensory loss Grasp reflex EF deficits Transcortical aphasia Right hemiplegia
What are deficits resulting from a stroke that affects right ACA territory?
Left leg weakness Left leg sensory loss Grasp reflex EF deficits Left hemineglect Left hemiplegia
What are deficits resulting from a stroke that affects left PCA territory?
Right homonymous hemianopia Alexis w/o agraphia (if splenium involved) Aphasia (if thal and IC involved) Right hemisensory loss Right hemiparesis Verbal memory ( if MTL involved)
What are deficits resulting from a stroke that affects right PCA territory?
Left homonymous hemianopia
Left hemisensory loss (if thal and IC involved)
Left hemiparesis (if thal and IC involved)
Spatial memory ( if MTL involved)
Broca’s aphasia can result from a stroke affecting what territory?
Left MCA superior division
