Neurocritical care
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Comparative Study
"Optimal cerebral perfusion pressure" in poor grade patients after subarachnoid hemorrhage.
Cerebrovascular pressure reactivity depends on cerebral perfusion pressure (CPP), with the optimal CPP (CPPopt) defined as pressure at which cerebrovascular reactivity is functioning optimally, reaching minimal value of pressure reactivity index (PRx). The study investigates the association between vasospasm, PRx, and CPPopt in poor grade patients (WFNS 4&5) after subarachnoid hemorrhage (SAH). ⋯ Most WFNS 4&5 grade SAH patients with PRx below zero at optimal CPP during the first 48 h after ictus survived. Optimal CPP increases during vasospasm.
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Comparative Study
Trends in surgical management and mortality of intracerebral hemorrhage in the United States before and after the STICH trial.
The Surgical Trial in Intracerebral Hemorrhage (STICH) showed no overall benefit from early surgery compared with initial conservative treatment for intracerebral hemorrhage (ICH). We hypothesized that the STICH trial findings would lead to a reduction in the rates of surgery for ICH in the United States. Using a national hospital database, we determined trends in surgery for ICH before and after publication of STICH. We also determined trends in ICH mortality during the study period. ⋯ The rate of surgery among ICH discharges in the United States has remained stable in the past decade. While in-hospital ICH mortality decreased, controlled clinical trials are needed to determine which ICH patients would benefit from surgery, and if decreasing in-hospital mortality is associated with decreased longer term mortality and improved functional outcomes.
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Ornithine transcarbamylase deficiency (OTCD) is the most common of the urea cycle disorders and results in an accumulation of ammonia and its metabolites. Excess ammonia in the brain is metabolized to glutamine, which increases intracellular osmolarity and contributes to cytotoxic edema. ⋯ Aggressive multimodality management of the patient coupled with bifrontal decompressive hemicraniectomy was a life-saving measure, offering the patient a reasonable outcome. At 6 month follow-up she had moderate disability on the Glasgow Outcome Score associated with cognitive difficulties.
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Anemia is associated with metabolic distress and brain tissue hypoxia after subarachnoid hemorrhage.
Anemia is frequently encountered in critically ill patients and adversely affects cerebral oxygen delivery and brain tissue oxygen (PbtO2). The objective of this study is to assess whether there is an association between anemia and metabolic distress or brain tissue hypoxia in patients with subarachnoid hemorrhage. ⋯ Anemia is associated with a progressively increased risk of cerebral metabolic distress and brain tissue hypoxia after subarachnoid hemorrhage.
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Guillain-Barre syndrome (GBS) is a well known entity that has many infectious agents reported as antecedent events. The spectrum of GBS includes acute inflammatory demyelinating polyneuropathy (AIDP), acute motor axonal neuropathy (AMAN), acute motor sensory axonal neuropathy (AMSAN), and some other variants like Miller-Fisher syndrome (MFS). ⋯ We report a case of AMAN variant of GBS associated with proven H1N1 influenza A infection. This virus has not been reported previously as the agent of antecedent infection that induced this disorder. Risk factors for other causes of ICU neuromuscular weakness are usually present in the ICU patients and should not be the reason for reluctance in active quest for GBS. Once the diagnosis of GBS is established or suspected the treatment with plasma exchange or intravenous immune globulin is indicated.