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word document on peripheral artery aneurysms
Vascular Occlusive Disease in Specific Territories
Cerebrovascular Occlusive Disease
| EPIDEMIOLOGY | |
| How does stroke rank among the different causes of death? | Third most common cause of death in the US |
| The other more common causes of death? | |
| What is the most common cause of stroke? | Atheroscledrotic occlusive disease of the extracranial portion of the carotid artery |
| ANATOMY | |
| Three branches of the ascending aorta? | Brachiocephalic, left common carotid artery, and the
left subclavian artery 10% of the normal population have a left common carotid artery which arises directly from the brachiocephalic artery |
| Other name for the brachiocephalic artery? | Innominate artery |
| The brain is supplied by four arteries: | The paired internal carotid arteries anteriorly and the vertebral arteries posteriorly |
| The internal carotid artery can be divided into four segments: | Cervical, intrapetrosal, intracavernous , and supraclinoid |
| The intracavernous and supraclinoid portions are referred to clinically as the: | Carotid siphon |
| Does the cervical portion of the internal carotid have branches? | No. The cervical (extracranial) portion of the internal carotid artery has no branches. |
| What is the first major branch of the internal carotid artery? | Ophthalmic artery |
| What are the major branches of the internal cartoid artery? | The supraclinoid portion of the internal carotid artery gives rise to the major branches of the internal carotid artery, including the ophthalmic, posterior communicating, and anterior choroidal arteries. Eventually, the internal carotid artery bifurcates into its terimnal branches, the anterior cerebral and the middle cerebral arteries. |
| What percentage of the population have no anastomoses between the anterior and the posterior cerebral circulations | 15%. Deficiency of collateral pathways has important clinical consequences when one of the four major cerebral arterires become occluded. |
| The vertebral arteries arise from the | first portion of the subclavian artery. And it eventually unites to form the basilar artery. |
| When the internal carotid artery is stenosed at the level of the carotid bifurcation, communication between the external carotid artery and the internal carotid artery occurs via which arteries? | Branches of the external carotid, facial, internal,
maxillary, and superficial temporal arteries may
anastamose with the ophthalmic artery branch of the
internal carotid artery. ******** |
© Copyright Calvin Lee 1998. Copying of this information is strictly prohibited.