Neurocritical care
-
Thrombolysis heralded a new era of acute intervention for ischemic stroke, accompanied by an increasing need for comprehensive acute critical care support. There remains the prospect of novel cerebral protection strategies. Cerebral ischemia initiates a complex cascade of events at genomic, molecular, and cellular levels, and inflammation is important in this cascade, both in the CNS and in the periphery. ⋯ A promising novel therapeutic approach is the interleukin-1 receptor antagonist (IL-1ra), which limits the action of the cytokine IL-1, a pivotal mediator in the pathophysiology of acute neurodegeneration. Critical care has much to offer some patients after acute ischemic stroke, including the delivery of acute interventions, often with very short therapeutic time windows, physiological support, and the management of complications. We discuss inflammation and its mediators in acute ischemic stroke, the systemic stress, and acute phase protein responses to acute ischemic stroke, how inflammation is relevant in deteriorating ischemic stroke, the impact of physiological variables, and both current and emerging interventions for acute ischemic stroke.
-
Historically, the prognosis for poor grade subarachnoid hemorrhage patients has been considered dismal. As a result, many hospitals have chosen conservative management over aggressive therapy. This guarded approach, however, is based on studies that do not take into account newer, more effective, management protocols and more recent long-term evidence that significant neurological recovery occurs in the months to years following discharge. More accurate and predictive methods are needed to decide when aggressive therapy is warranted. ⋯ This study demonstrates that significant recovery occurs in the weeks to months after poor grade aSAH. Pupillary reactivity on admission can be used as a predictor of survival and recovery at intermediate and long-term time points, more so than Hunt and Hess grade.
-
Takotsubo cardiomyopathy can complicate several conditions including neurological emergencies. A few recurrent cases associated with seizures have been reported, but none of the patients had status epilepticus. The pathophysiology of takotsubo syndrome, although debated, may involve stunning of the myocardium by a catecholamine storm triggered by stress. Patients with epilepsy may be at increased risk for takotsubo syndrome, which may occur repeatedly. ⋯ The occurrence of takotsubo cardiomyopathy in association with convulsive status epilepticus, but not with brief seizures, supports neurogenically mediated myocardial stunning related to direct toxicity of endogenous catecholamines. Neuro-intensivists must be aware of this potentially fatal but fully reversible cardiac complication, which may be among the causes of death in patients with status epilepticus.
-
Comparative Study Clinical Trial
A prospective, observational clinical trial of fever reduction to reduce systemic oxygen consumption in the setting of acute brain injury.
Fever after acute brain injury appears to be a detrimental factor, associated with impaired neurological outcomes. This study assessed physiological changes in systemic oxygen consumption (VO2) during cutaneous cooling after severe brain injury. ⋯ Fever reduction in acute brain injury appears to significantly reduce systemic VO2, but is highly dependent on shivering control.
-
Randomized Controlled Trial Multicenter Study
Association between disability measures and short-term health care costs following intracerebral hemorrhage.
Small improvements in clinical outcomes after intracerebral hemorrhage (ICH) can have a substantial impact on overall health care costs, yet little data exists on the costs associated with the most commonly studied clinical outcomes in this type of stroke. ⋯ Health care costs vary significantly by levels of disability as measured by the mRS, but costs do not vary across the full range of mRS outcomes. The mRS is more informative than the Barthel index and NIHSS for discriminating the resource use and costs associated with different levels of disability after ICH.