• Ischemia
  • In the setting of increased resistance in the proximal subclavian artery, blood may flow backward away from the heart along the ITA, causing myocardial ischemia due to coronary steal. (wikipedia.org)
  • If one part of the circle becomes blocked or narrowed (stenosed) or one of the arteries supplying the circle is blocked or narrowed, blood flow from the other blood vessels can often preserve the cerebral perfusion well enough to avoid the symptoms of ischemia. (wikipedia.org)
  • contralateral
  • citation needed] The vertigo due to VBI can be brought on by head turning, which could occlude the contralateral vertebral artery and result in decreased blood flow to the brain if the contralateral artery is occluded. (wikipedia.org)
  • neck
  • Extreme motions of the head and neck, can injure vertebral arteries, resulting in vertebrobasilar artery strokes & brain damage. (denverback.com)
  • Each vessel courses superiorly along each side of the neck, merging within the skull to form the single, midline basilar artery. (wikipedia.org)
  • Behind it are the transverse process of the seventh cervical vertebra, the sympathetic trunk and its inferior cervical ganglion The second (foraminal) part runs upward through the foramina in the transverse processes of the C6 to C2 vertebr√¶, and is surrounded by branches from the inferior cervical sympathetic ganglion and by a plexus of veins which unite to form the vertebral vein at the lower part of the neck. (wikipedia.org)
  • brain
  • The tumor may encase the vertebral, basilar, and their perforating arteries and cranial nerves, may invade bony structures of the craniocervical junction, or may be densely adherent to the brain stem. (c3.hu)
  • We report 5 cases attended in our neurology department in the last 2 years in which vertebral artery (VA) halo sign was the clue for the early diagnosis of GCA as the primary cause of brain infarction. (ahajournals.org)
  • Vertebrobasilar circulatory disorders are conditions in which blood supply to the back of the brain is disrupted. (drugs.com)
  • The areas in the back of the brain that receive blood from these arteries are needed to keep a person alive. (drugs.com)
  • Vertebrobasilar circulatory disorders are a group of diseases in which not enough blood is supplied to the back of the brain. (healthline.com)
  • Obstruction of blood flow through the affected vessel may lead to dysfunction of part of the brain supplied by the artery. (wikipedia.org)
  • The basilar artery is the main blood supply to the brainstem and connects to the Circle of Willis to potentially supply the rest of the brain if there is compromise to one of the carotids. (wikipedia.org)
  • In human anatomy, the basilar artery is one of the arteries that supplies the brain with oxygen-rich blood. (wikipedia.org)
  • internal
  • Internal jugular vein cannulation is a common clinical procedure but not without risks including inadvertent artery puncture. (biomedsearch.com)
  • Ehlers-Danlos syndrome type 4, caused by mutations of the COL3A gene, leads to defective production of the collagen, type III, alpha 1 protein and causes skin fragility as well as weakness of the walls of arteries and internal organs. (wikipedia.org)
  • As in vertebral-subclavian steal, coronary-subclavian steal may occur in patients who have received a coronary artery bypass graft using the internal thoracic artery (ITA), also known as internal mammary artery. (wikipedia.org)
  • distal
  • As a result of this procedure, the distal end of the ITA is diverted to one of the coronary arteries (typically the LAD), facilitating blood supply to the heart. (wikipedia.org)
  • branches
  • Its branches can be divided into two groups: Paramedian perforating arteries arising either directly from the dorsal surface or from short circumferential arteries running around and into the pons supplying the corticospinal tracts and vital deep nuclei. (wikipedia.org)
  • All arteries involved give off cortical and central branches. (wikipedia.org)