Journal of neurosurgical anesthesiology
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J Neurosurg Anesthesiol · Jan 2000
Case ReportsIntraoperative cardiac arrest in a neurosurgical patient: what are the options?
Intraoperative cardiac arrest is uncommon. We describe a case of intraoperative cardiac arrest in a patient undergoing anesthesia for surgical repair of an intracranial arteriovenous malformation (AVM).
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J Neurosurg Anesthesiol · Jan 2000
Rate of CSF formation and resistance to reabsorption of CSF during sevoflurane or remifentanil in rabbits.
Information on the effects of sevoflurane on the rate of cerebrospinal fluid (CSF) formation (Vf) and resistance to reabsorption of CSF (Ra) is incomplete, and no such information is available for remifentanil. The present study examined the dose-related effects of sevoflurane and remifentanil on Vf and Ra in rabbits. Eight rabbits were studied during isoflurane 1.4% (baseline) and sevoflurane 1.4%, 2.5%, and 3.7%, and eight were studied during isoflurane 1.4% (baseline) and remifentanil 0.30, 0.67, and 1.00 microg x kg(-1) x min(-1) in randomized order. ⋯ Vf and Ra during either sevoflurane or remifentanil were not significantly different from Vf and Ra during the two isoflurane baseline conditions (Vf = 8.5+/-2.5 and 9.8+/-1.3 microl x min(-1), and Ra = 0.97+/-0.36 and 1.38+/-0.55 cm H2O x microl(-1) x min, mean +/- SD). Vf and Ra are of interest because they influence CSF volume, intracranial pressure, and/or intracranial elastance. In our model, sevoflurane or remifentanil did not significantly alter Vf or Ra.
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J Neurosurg Anesthesiol · Jan 2000
Anesthetic management of surgical neuroendoscopies: usefulness of monitoring the pressure inside the neuroendoscope.
Neuroendoscopic procedures are increasing in frequency in neurosurgical practice. We describe the anesthetic technique and the perioperative complications found in 100 neuroendoscopic interventions performed at our institution. Cranial tumor biopsy or retrieval (62%) and cisternostomy for hydrocephalus (33%) were the most frequent indications for neuroendoscopy. ⋯ Pressure values >30 mm Hg are associated with postoperative morbidity, especially unexpected delayed recovery. Measuring the pressure inside the endoscope is technically easy and might be beneficial if performed in all neuroendoscopic procedures. Reducing the incidence of episodes of high peak pressure values might decrease the rate of postoperative complications.