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We investigated two commercially available probes for measurement of the partial pressure of brain tissue oxygen (PbrO2) and calculation of the index of brain tissue oxygen pressure reactivity (ORx) in 7 patients after aneurysmal subarachnoid hemorrhage (SAH). Simultaneous monitoring of PbrO2 using the Licox(®) probe and the multiparameter Raumedic probe(More)
INTRODUCTION Hydrocephalus is still a not well-understood diagnostic and a therapeutic dilemma because of the lack of sufficient and comprehensive model of cerebrospinal fluid circulation and pathological alterations. CONCLUSIONS Based on current studies, reviews, and knowledge of cerebrospinal fluid dynamics, brain water dynamics, intracranial pressure,(More)
BACKGROUND Normal pressure hydrocephalus (NPH) has been an ongoing and challenging field of research for the past decades because two main issues are still not fully understood: the pathophysiologic mechanisms underlying ventricular enlargement and prediction of outcome after surgery. PURPOSE To evaluate changes in diffusion tensor imaging (DTI) derived(More)
OBJECTIVE The aim of the study was to analyze the diagnostic and predictive values of clinical tests, CSF dynamics, and intracranial pulsatility tests, compared with external lumbar drainage (ELD), for shunt response in patients with idiopathic normal pressure hydrocephalus (iNPH). METHODS Sixty-eight consecutive patients with suspected iNPH were(More)
OBJECTIVES Acute hydrocephalus ensues from various intracranial processes and is usually treated using external ventricular drainage (EVD). After the acute phase, a clamp trial is usually performed to identify patients requiring permanent CSF shunting. The aim of our study was to identify simple and clinically accessible factors that can help predict the(More)
PURPOSE The aim of this work was the evaluation of a navigated and power controlled milling system for spine surgery (navigated control spine). The navigation is based on a set of intraoperatively taken fluoroscopic images from different angles. A manually planned workspace limits the power of the mill and assures a higher automatisation degree than any(More)
BACKGROUND Cerebral vasospasm is one of the most serious complications after subarachnoid hemorrhage (SAH). The cerebral artery diameter is regulated by complex physiological mechanisms. Among them the regulation of intracellular calcium homeostasis seems to play a crucial role. Recent data suggest that ryanodine receptors (RYRs) are involved in regulating(More)
BACKGROUND Tracheostomy is performed in ventilated stroke patients affected by persisting severe dysphagia, reduced level of consciousness, or prolonged mechanical ventilation. The study aim was to determine the frequency and predictors of successful decannulation and long-term functional outcome in tracheotomized stroke patients. METHODS A prospective(More)
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