Neurocritical care
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Review Case Reports
Dialysis-Induced Worsening of Cerebral Edema in Intracranial Hemorrhage: A Case Series and Clinical Perspective.
Intracranial hemorrhage (ICH) is not an uncommon complication of end-stage renal disease (ESRD), and may be complicated by cerebral edema. Hemodialysis (HD) may induce rapid osmolar and fluid shifts, increasing brain water content with the potential to worsen cerebral edema. The dangers of HD in patients with acute ICH have only been highlighted in isolated reports. ⋯ Hemodialysis may worsen cerebral edema in the setting of ICH sufficient to precipitate cerebral herniation. Caution should be exercised when dialysing a patient with an acute mass lesion and reduced intracranial compliance, especially those in whom HD is new or not routine. Delaying HD till risk of edema is attenuated, or ensuring gradual urea removal (such as with continuous hemofiltration) may be advisable.
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Mortality and morbidity have remained high in bacterial meningitis. Impairment of cerebral energy metabolism probably contributes to unfavorable outcome. Intracerebral microdialysis is routinely used to monitor cerebral energy metabolism, and recent experimental studies indicate that this technique may separate ischemia and non-ischemic mitochondrial dysfunction. The present study is a retrospective interpretation of biochemical data obtained in a series of patients with severe community-acquired meningitis. ⋯ In patients with severe community-acquired meningitis, compromised cerebral energy metabolism occurs frequently and was diagnosed in 7 out of 15 cases. A biochemical pattern of non-ischemic mitochondrial dysfunction appears to be a more common underlying condition than cerebral ischemia.
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Multicenter Study Observational Study
Predictors of Nosocomial Pneumonia in Intracerebral Hemorrhage Patients: A Multi-center Observational Study.
Nosocomial pneumonia (NP) is a frequent complication among spontaneous intracerebral hemorrhage (sICH) patients. This study was aimed at identifying in-hospital risk factors that predispose sICH patients to NP. ⋯ Independent predictors of NP included early hospital admission, in-hospital aspiration, intubation, and tracheostomy. NP was associated with prolonged hospital LOS.
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Patients recovering from aneurysmal subarachnoid hemorrhage (SAH) are at risk for developing delayed cerebral ischemia (DCI). Experimental and human studies implicate the vasoconstrictor P450 eicosanoid 20-hydroxyeicosatetraenoic acid (20-HETE) in the pathogenesis of DCI. To date, no studies have evaluated the role of vasodilator epoxyeicosatrienoic acids (EETs) in DCI. ⋯ Our findings suggest that P450 eicosanoids play an important role in the pathogenesis of DCI. While 20-HETE may contribute to the development of DCI, 14,15-EET may afford protection against DCI. Strategies to enhance 14,15-EET, including sEH inhibition, should be considered as part of a comprehensive approach to prevent DCI.
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Review Case Reports
A Cause of Atypical Intracranial Subarachnoid Hemorrhage: Posterior Spinal Artery Aneurysms.
Approximately 1 % of cases of intracranial subarachnoid hemorrhage (SAH) are caused by spinal vascular pathologies. Among them, isolated spinal artery aneurysms are uncommon and a limited number of cases have been reported in the literature. ⋯ Isolated spinal artery aneurysms represent a rare cause of intracranial SAH. Symptoms such as back pain and lower-extremity weakness can be clues to the adequate diagnosis. Surgical or endovascular treatment should be pursued in all patients, as the risk of rebleeding is non-negligible.