Are nonfocal symptoms more frequent in patients with vertebral artery than carotid artery stenosis?
More than half of the TIAs or nondisabling ischemic strokes were associated with nonfocal neurological symptoms. Nonfocal symptoms occurred more frequently in patients with a symptomatic VA stenosis than CA stenosis.
Visceral organs were perfused to some extent through collaterals and protected from ischemia during SCP. Left subclavian arterial perfusion enabled significant CBF to the lower body. Considering this CBF, three-vessel perfusion appears to be better than two-vessel perfusion during SCP; however, the choice of perfusion technique may not be so important under conditions of hypothermia because the difference in CBF between the two methods was small.