Furthermore, 35%-40% of ischemic strokes are considered LVOs, which are composed of internal carotid artery, middle cerebral artery (MCA), and basilar artery occlusion
Within minutes, they were able to confirm Osaka was not only suffering a stroke but probably had one of the rarest and most fatal types of stroke, a basilar artery occlusion, which means the blood clot was blocking an artery that provides blood to the brain stem.
Patients with an acute basilar artery occlusion, the type of stroke that Osaka suffered, typically have a mortality rate of greater than 85 percent.
Excessive sweating: an uncommon sign of basilar artery occlusion
However, the absence of any neurological changes between examinations, as would be expected with a typically devastating basilar artery occlusion, weighs against this possibility.
The complete absence of any clinical deterioration between CTA and MRA makes basilar artery occlusion unlikely.
Given the CT findings and stable clinical examination, it is likely that DSA reflected a false-positive finding of basilar artery occlusion.
Intravenous thrombolysis is as good as, if not better than, the recommended intraarterial approach for basilar artery occlusion, according to Perttu J.
Several research groups have advocated the endovascular administration of thrombolytic agents directly to the posterior circulation in patients with basilar artery occlusion, and many medical centers have adopted this approach, even though there are no data comparing it with the less invasive intravenous approach.
Lindsberg and associates switched to using immediate intravenous recombinant tissue plasminogen activator (rTPA) in 50 consecutive patients with angiographically proven basilar artery occlusion between 1995 and 2003 (JAMA 2004;292:1862-6).
8,10] Symptoms consistent with basilar artery occlusion
include limb paralysis, bulbar or pseudobulbar paralysis of the cranial nerve motor nuclei, nystagmus, eye movement disturbances and coma.