Neurocritical care
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Cardiac arrest is an important cause of morbidity and mortality. Brain injury severity and prognosis of cardiac arrest patients are related to the cerebral areas affected. To this aim, we evaluated the variability and the distribution of brain glucose metabolism after cardiac arrest and resuscitation in an adult rat model. ⋯ Our data suggest that cerebral regions have different susceptibility to moderate global ischemia in terms of glucose metabolism. The neocortex showed a higher sensibility to hypoxia-ischemia than other regions. Other subcortical regions, in particular brainstem and cerebellum, showed no significant change compared to non-ischemic rats.
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Large ischemic stroke in the very elderly population is presumed to invariably carry a poor prognosis and clinicians may refrain from continuing intensive care. Many elderly patients are not surgical candidates, and there is a paucity of data outlining the real-world outcomes of continued medical management. Our objective is to identify the factors associated with the outcome of very elderly patients with large hemispheric infarction (LHI) treated with medical management alone. ⋯ Ten percent of medically managed patients (≥ 70 years of age) with LHI can go home or to assisted living, but with a mRS of 4. Whether this is an acceptable outcome must be individualized on a case-by-case basis; however, poor prognosis should not be automatically presumed solely based on the combination of older age and a large stroke.
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Patients with posterior fossa lesions causing obstructive hydrocephalus present a unique clinical challenge, as relief of hydrocephalus can improve symptoms, but the perceived risk of upward herniation must also be weighed against the risk of worsening or continued hydrocephalus and its consequences. The aim of our study was to evaluate for clinically relevant upward herniation following external ventricular drainage (EVD) in patients with obstructive hydrocephalus due to posterior fossa lesions. ⋯ Radiographic presence of upward herniation was often present prior to EVD placement. Clinically relevant upward herniation was rare, with only two patients worsening after the procedure, in the presence of other clinical confounders that likely contributed as well.
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To determine the cerebral protective effects of mild hypothermia (MH) on cerebral microcirculation. ⋯ These results indicate that MH could inhibit RBMEC apoptosis by preventing pro-apoptotic cells and early apoptotic cells from progressing to intermediate and advanced stages. This may be due to the effect of MH on I/R-induced apoptotic gene expression changes.