Neurocritical care
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Review Case Reports
Sphenoid and Subdural Hemorrhage as a Presenting Sign of Ruptured Clinoid Aneurysm.
Aneurysm rupture presenting as an isolated or pure subdural hematoma (SDH) without subarachnoid hemorrhage is an extremely rare radiographic presentation. We present a case of a ruptured internal carotid artery aneurysm with a pure SDH and concurrent sphenoid sinus hemorrhage. ⋯ Acute subdural hematoma may be due to a ruptured clinoid carotid aneurysm. Acute hemorrhage into the sphenoid sinus can be an important clue.
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Multicenter Study Clinical Trial
Increased Brain Volume Among Good Grade Patients with Intracerebral Hemorrhage. Results from the Antihypertensive Treatment of Acute Cerebral Hemorrhage (ATACH) Study.
We ascertained the occurrence of global cerebral edema manifesting as increased brain volume in subjects with intracerebral hemorrhage (ICH) and explored the relationship between subject characteristics and three month outcomes. ⋯ We found preliminary evidence of increased cerebral brain volume in subjects with good grade and small ICHs, which may be suggestive of global cerebral edema.
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Review Case Reports
Artery of Percheron Infarction as an Unusual Cause of Coma: Three Cases and Literature Review.
Stroke due to occlusion of the artery of Percheron (AOP), an uncommon anatomic variant supplying the bilateral medial thalami, may raise diagnostic challenges and cause life-threatening symptoms. Our objective here was to detail the features and outcomes in three patients who required intensive care unit (ICU) admission and to review the relevant literature. ⋯ Bilateral paramedian thalamic stroke due to AOP occlusion can be life threatening. The early diagnosis relies on MRI with magnetic resonance angiography. Recovery of consciousness is usually rapid and mortality is low, warranting full-code ICU management.
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Refractory status epilepticus (RSE) poses significant challenge, with a variety of novel therapeutics employed. Our goal was to evaluate the effectiveness of N-methyl D-aspartate (NMDA) receptor antagonists in the control of RSE. We performed a systematic review of all the literature, with all articles pulled from MEDLINE, BIOSIS, EMBASE, Global Health, HealthStar, Scopus, Cochrane Library, the International Clinical Trials Registry Platform (inception to September 2013), reference lists of relevant articles, and gray literature. ⋯ Outcomes were poorly documented in the majority of the studies. There currently exists Oxford level 4, GRADE C evidence to support the use of ketamine for refractory seizures in the adult and pediatric populations. Further prospective study of early ketamine administration is warranted.
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Clinical Trial
Continuous Optical Monitoring of Cerebral Hemodynamics During Head-of-Bed Manipulation in Brain-Injured Adults.
Head-of-bed manipulation is commonly performed in the neurocritical care unit to optimize cerebral blood flow (CBF), but its effects on CBF are rarely measured. This pilot study employs a novel, non-invasive instrument combining two techniques, diffuse correlation spectroscopy (DCS) for measurement of CBF and near-infrared spectroscopy (NIRS) for measurement of cerebral oxy- and deoxy-hemoglobin concentrations, to monitor patients during head-of-bed lowering. ⋯ DCS/NIRS detected differences in CBF and oxygenation responses of brain-injured patients versus controls during head-of-bed manipulation. This pilot study supports the feasibility of continuous bedside measurement of cerebrovascular hemodynamics with DCS/NIRS and provides the rationale for further investigation in larger cohorts.