Stroke; a journal of cerebral circulation
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Disturbances of cerebrovascular autoregulation are thought to be involved in delayed cerebral ischemia and infarction after aneurysmal subarachnoid hemorrhage (SAH). We hypothesized that the continuous monitoring of brain tissue oxygen (PtiO(2)) pressure reactivity enables the detection of impaired autoregulation after SAH and that impaired autoregulation is associated with delayed infarction. ⋯ ORx indicates impaired autoregulation in patients who develop delayed infarction after SAH. Furthermore, this index may distinguish between patients who finally develop delayed infarction and those who do not.
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Intra-operative cerebral microembolism may be a factor in the etiology of cognitive decline after orthopedic surgery. We here examine the impact of intra-operative microembolism on cognitive dysfunction after hip and knee replacement surgery. ⋯ Cognitive decline was seen frequently after hip and knee surgery. Intra-operative microembolism occurred universally but did not significantly influence postoperative cognition. Quality of life and functional outcome demonstrated improvement in all cases in spite of cognitive dysfunction.
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Multicenter Study Comparative Study
Association of pretreatment blood pressure with tissue plasminogen activator-induced arterial recanalization in acute ischemic stroke.
Elevated systolic blood pressure (SBP) and lack of early vessel recanalization are predictors of poor outcome among patients with stroke treated with systemic tissue plasminogen activator (tPA). We aimed to evaluate the potential relationship between pretreatment SBP and tPA-induced recanalization. ⋯ Higher pretreatment SBP levels are associated with poor recanalization in patients with acute stroke treated with intravenous tPA.
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Comparative Study
Disparities in outcomes among patients with stroke associated with insurance status.
Despite well-documented discrepancies in many clinical conditions across insurance groups, limited research has examined insurance-related disparities for patients with stroke. This study examined the relationship between insurance status and hospital care for patients with stroke. ⋯ Policy should promote access to outpatient and preventive care for uninsured patients so risk factors such as hypertension can be detected and treated during early, asymptomatic stages. Further research is needed to evaluate the extent to which differences in outcomes are attributable to differences in severity level on admission.