c l i n i c a l f o l i o s : n a r r a t i v e





A D V E R T I S E M E N T

 

Cerebrovascular Disease: 4

A D V E R T I S E M E N T

   
 

Stroke, permanent cranial neurologic defecit, is a leading cause of morbidity and mortality.       

Notes:

Link to this frame from your Personal Thumbnails page? Yes No


 

Cerebrovascular Disease: 5

A D V E R T I S E M E N T

   
 

Interrupted blood flow to the brain is called infarction. The result of infarction is tissue death or necrosis. The loss of function of the dead tissue results in a focal neurologic deficit, if the patient survives the initial event as most (80%) do. In the majority of cases the deficit is permanent.

Stroke may result from occlusion of vessels or from rupture of weakened vessels, both most commonly secondary to atherosclerosis. Hemorrhagic stroke is usually related to hypertension in combination with atherosclerosis. Occlusion from atherosclerotic narrowing, secondary thrombosis or emboli (mural thrombus after MI, carotid plaque) initially causes dry or non-hemorrhagic infarction, but weakened vessels in the infarcted area may secondarily rupture, compounding the damage.    

Notes:

Link to this frame from your Personal Thumbnails page? Yes No


 

Cerebrovascular Disease: 6

A D V E R T I S E M E N T

   
 

Cardiac mural thrombus or extracranial internal carotid artery atherosclerosis are the most common cause of focal vascular occlusion:

ophthalmic: decreased vision, but may be asymptomatic because of collateral globe circulation. 

anterior choroidal: contralateral hemiparesis, hemihypesthesia or hemianopsia.

anterior cerebral: contralateral paralysis with lower extremity more involved than upper, hemisensory loss, expressive aphasia if dominant hemisphere. 

middle cerebral: contralateral hemiparesis, non-fluent aphasia if dominant hemisphere, hemianopsia.

posterior cerebral: contralateral homonymous hemianopsia, alexia, sensory derangements (thalamic).

superior cerebellar: ipsilateral limb ataxia, oculomotor impairment, Horner's syndrome, contralateral sensory loss.

anterior inferior cerebellar: ipsilateral facial paralysis, deafness, gaze impairment, ataxia, contralateral pain and temperature loss.

posterior inferior cerebellar: ipsilateral sensory loss on face, limb ataxia, Horner's syndrome, vocal cord paralysis, contralateral pain and thermal loss.   

Notes:

Link to this frame from your Personal Thumbnails page? Yes No

 

Click the "Update" button to save your Notes and Personal Thumbnails.

 

Thumbnails

This page was last modified on 7/20/1999.