Articles: general-anesthesia.
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Recovery from general anaesthesia is a period of intense stress for patients: there is sympathetic activation, catecholamine release, and increase in blood pressure or heart rate. Stressful events increase cerebral blood flow and cerebral oxygen consumption, potentially producing elevation of intracranial pressure and thus, favouring cerebral insults. Measures to prevent agitation, hypertension, shivering, and coughing are therefore very well justified in neurosurgical patients. ⋯ An awake patient is the best and the cheapest neuromonitoring available. If, after surgery, a patient does not rapidly recover consciousness, or a focal neurological deficit becomes apparent, a head CT-scan should be performed as soon as possible to rule out a neurosurgical complication. Close monitoring during the first 24 hours after craniotomy is mandatory.
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Best Pract Res Clin Anaesthesiol · Dec 2007
ReviewPrevention and treatment of homeostatic disorders after central neurosurgical procedures.
Prevention and treatment of homeostatic disorders after central neurosurgical procedures requires a coordinated effort by the entire medical team caring for the patient. The goal of management is to optimize physiologic and metabolic variables so that patient outcome is improved. This chapter reviews current knowledge and clinical approaches to prevention and treatment of general homeostatic disorders that commonly complicate the postoperative course of neurosurgical patients after general anesthesia. Practice recommendations based on current clinical trials and experience will be made on the following topics: therapeutic approaches to optimal hemoglobin, cerebral blood flow and hemorrheology; prophylaxis and treatment of thrombosis; temperature management including rewarming and the control of shivering; use and side effects of anticonvulsants and corticosteroids; and therapeutic approaches to optimal serum glucose levels.
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Classical adult type rapid sequence induction (RSI) intubation is not always appropriate in children. In newborns, infants and small children, limited cooperation during pre-oxygenation, reduced respiratory oxygen reserves, increased oxygen demand and a tendency for airway collapse, easily lead to hypoxaemia after induction of anaesthesia. Gentle mask ventilation with pressures not exceeding 10-12 degrees cm H(2)O allows oxygenation without the risk of gastric inflation and aspiration. ⋯ Application of cricoid pressure does not reliably prevent pulmonary aspiration. In children cricoid pressure clearly interferes with smooth induction of anaesthesia, results in difficult mask ventilation and intubation as well as provokes bucking and straining and, therefore, should not be routinely used. Key features of RSI intubation for children are effective induction of deep anaesthesia followed by profound muscle paralysis, careful mask ventilation and gentle tracheal intubation under optimised conditions.
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There are many case reports of serious complications and death among obstructive sleep apnea patients (OSA) during general anesthesia or postoperative analgesia. Sedatives and anesthetic agents, pharyngeal anatomy of these patients, opiates given for analgesia, and post operative REM sleep rebound represent potential hazards for general anesthesia in OSA patients. ⋯ A special attention should be given to the symptoms and signs suggestive of OSA during preoperative visits. Screening tests should be performed in patients with suspected OSA and, if positive, a treatment should be initiated.
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Review Case Reports
[Clinical electroencephalographic monitoring of depth of anesthesia].