9.1 - Brain and spinal cord Blood supply Flashcards

1
Q

What is a TiA and Stroke?

A

Stroke - lack of blood supply to the brain resulting in neurological symptoms lasting over 24 hours TIA - less than 24 hours

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2
Q

What is some symptoms of a tia?

A

hemiparesis, aphasia

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3
Q

Which artery is blocked in a TACS? Symptoms?

A

ICA or proximal MCA contrlateral hemiparesis. contralateral hemianopia. Dysphasia, dyspraxia

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4
Q

Which artery is blocked in a PACS? Symptoms?

A

MCA motor defecit

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5
Q

Which artery is blocked in a LACS? Symptoms?

A

Lacunar stroke basal ganglia artery Pure motor, pure sensory, or sensorimotor

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6
Q

Which artery is blocked in a POCS? Symptoms?

A

Posterior circulation stroke Brainstem, cerebellar or occipital involvement

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7
Q

What is lateral medullary syndrome and what is its symptoms?

A

Stroke of the posterior inferior cerebellar artery. Causes vertigo with cerebellar signs

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8
Q

What causes locked in syndrome?

A

Upper brainstem infarction

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9
Q

in a hypertensive patient, where would an hemorrhagic stroke most likely occur

A

basal ganglia, pons, cerebellum, sub cortical white matter

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10
Q

In a normotensive patient, where would a hemorrhagic stroke most liekly occur

A

lobar intracranial hemorrhage

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11
Q

what supplies the blood supply to the spinal cord?

A

anterior 2/3rds - anterior spinal artery posterior - paired posterior spinal artery

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12
Q

How does an anterior spinal infarct present?

A

painful. spinal shock syndrome.

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13
Q

What is the decorticate response?

A

isolation of cortex from lower brain. Lower limbs extend and upper limbs flexed. Like a mummy

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14
Q

What is a decerebrate response?

A

Damage to lower parts of brain, loss of descending inhibition. Complete extension of lower and upper limbs and head.

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15
Q
A
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