Neurocritical care
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Emergency Neurological Life Support (ENLS) is a series of protocols, generated by experienced neurocritical care and emergency physicians that describe key steps when managing a patient within the first hours of a neurological emergency. The protocols are designed to help standardize these important early steps for several reasons: (1) patients will likely experience better outcomes, (2) they provide the essential elements to communicate to receiving physicians a patient's diagnosis and emergency treatment, (3) this approach forms the foundation for eventual consensus on neurological emergency decisions, and (4) this consensus can inform researchers about the important clinical questions that need resolution to enhance patient care. ⋯ Certification and training in ENLS is hosted by the Neurocritical Care Society. This document introduces the concept of ENLS, reviews the history of its creation, and enumerates future goals as ENLS becomes adopted more widely.
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Coma is an acute failure of neuronal systems governing arousal and awareness and represents a neurological emergency. When encountering a comatose patient, the clinician must have an organized approach to detect easily remedial causes, prevent ongoing neurologic injury, and determine a hierarchy of diagnostic tests, treatments, and neuromonitoring. Coma was chosen as an Emergency Neurological Life Support (ENLS) protocol because timely medical and surgical interventions can be life-saving, and the initial work-up of such patients is critical to establishing a correct diagnosis.
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Acute spinal cord compression (SCC) is the most serious of the diseases of the cord and should be accorded special attention in neurocritical care. Patients with SCC have a combination of motor and sensory dysfunction that has a distribution referable to one, or a few contiguous, spinal levels. Bowel and bladder dysfunction and neck or back pain are usually part of the clinical presentation but are not uniformly present. Because interventions are time-sensitive, the recognition and treatment of SCC was chosen as an ENLS protocol.
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Airway management is central to the resuscitation of the neurologically ill. These patients often have evolving processes that threaten the airway and adequate ventilation. Therefore, airway, ventilation, and sedation were chosen as an Emergency Neurological Life Support (ENLS) protocol. Reviewed topics include airway management; the decision to intubate; when and how to intubate with attention to cardiovascular status; mechanical ventilation settings; and the use of sedation, including how to select sedative agents based on the patient's neurological status.
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Acute ischemic stroke is a neurological emergency that can be treated with time-sensitive interventions, including intravenous thrombolysis and endovascular approaches. Extensive study has demonstrated that rapid assessment and treatment are essential to improving neurological outcome. For this reason, acute ischemic stroke was chosen as an Emergency Neurological Life Support protocol. The protocol focuses on the first hour following the onset of neurological deficit.