نتایج جستجو برای: cerebral vasospasm
تعداد نتایج: 186646 فیلتر نتایج به سال:
A person in his 20s with known migraine with aura developed infarcts in the right middle cerebral artery and both anterior fields of supply (Figure 1 shows a magnetic tomography diffusion weighted series). Cerebral computed and magnetic tomography with magnetic resonance angiography (MRA) after admission showed normal blood flow and no sign of dissection or vasculitis. Hemicraniectomy became ne...
We believe that current experimental and clinical evidence can be most satisfactorily interpreted by assuming that oxyhemoglobin is the cause of cerebral vasospasm that follows subarachnoid hemorrhage. We review the pathogenetic mechanisms by which oxyhemoglobin affects cerebral arteries. The relative importance of each of these mechanisms in the genesis of vasospasm, the biochemical pathways o...
Despite advances in aneurysm ablation and the initial management of patients presenting with aneurysmal subarachnoid hemorrhage, delayed cerebral ischemia remains a significant source of morbidity. Traditionally, delayed cerebral ischemia was thought to be a result of vasospasm of the proximal intracranial vessels, and clinical trials have relied largely on radiographic evidence of vasospasm as...
injury: a randomized, controlled, experimental study. Crit Care 2013;17:R86. 5. Robson MC, Del Beccaro EJ, Heggers JP. The effect of prostaglandins on the dermal microcirculation after burning, and the inhibition of the effect by specific pharmacological agents. Plast Reconstr Surg 1979;63:781-7. and the left MCA contraction period blood flow velocity was 98 cm/sec, which was higher than the no...
THE CANADIAN JOURNAL OF NEUROLOGICAL SCIENCES Cerebral vasospasm refers to delayed-onset cerebral arterial narrowing in response to blood clots left in the subarachnoid space after aneurysm rupture. It is rare in the first 72 hours from bleeding, peaks in severity about the end of the first week, and thereafter resolves within three to four weeks. When the arterial narrowing is severe or diffus...
Does the location of the arterial input function affect quantitative CTP in patients with vasospasm?
BACKGROUND AND PURPOSE In recent years, there has been increasing use of CTP imaging in patients with aneurysmal SAH to evaluate for vasospasm. Given the critical role of the arterial input function for generation of accurate CTP data, several studies have evaluated the effect of varying the arterial input function location in patients with acute stroke. Our aim was to determine the effect on q...
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