Minerva anestesiologica
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Minerva anestesiologica · May 2006
Randomized Controlled Trial Comparative StudyRemifentanil vs fentanyl with a target controlled propofol infusion in patients undergoing craniotomy for supratentorial lesions.
Remifentanil hydrochloride is an ultra-short acting m-opioid receptor agonist. This study compared the use of remifentanil with that of fentanyl during elective supratentorial craniotomy in a target controlled infusion (TCI)-propofol anesthesia regimen and evaluated the quality of recovery from anesthesia. ⋯ Remifentanil appears to be a reasonable alternative to fentanyl during elective surgery of supratentorial lesions.
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Minerva anestesiologica · May 2006
Comparative StudyBispectral Index compared to Ramsay score for sedation monitoring in intensive care units.
Continuous monitoring is of paramount importance in order to obtain a correct level of sedation in ICU patients. Clinical scoring systems, although simple and inexpensive, are often inadequate in evaluating the patient level of consciousness. Among instrumental tools for sedation monitoring, Bispectral Index (BIS) is now widely used due to its reliability and applicability. Nevertheless some doubts still exist regarding its usefulness in ICU. ⋯ BIS monitoring is useful in ICU patients and allows a finest differentiation of sedation level in deeply sedated ICU patients.
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Complications of liver disease are commonly seen in the intensive care unit (ICU). When evaluating patients with liver disease in the ICU, it is important to determine whether it is acute or chronic liver disease. ⋯ Chronic liver disease is best discussed in terms of the various complications that may ensue such as ascites, hepatorenal syndrome, spontaneous bacterial peritonitis, variceal hemorrhage and hepatic encephalopathy. Each of these conditions will be discussed with specific attention to critical care management.
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Minerva anestesiologica · May 2006
Comparative StudyAre hot-burning sensations produced by the axonal damage of afferent unmyelinated fibres?
Pain resulting from nerve lesions is classically referred to as a ''burning pain''. Both the axonal damage and sensitization of unmyelinated C-fibres have been considered as the possible generators of this sensation. The aim of this study was to verify the hypothesis that hot-burning sensations are produced by the axonal damage of afferent unmyelinated fibres in peripheral nerves. ⋯ This study does not confirm the hypothesis that hot-burning sensations are produced by the axonal damage of afferent amyelinated fibres in peripheral nerves. It agrees with clinical evidence suggesting that patients with different clinical conditions can complain of hot-burning sensations, independently of the presence of a nerve lesion.
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Minerva anestesiologica · May 2006
ReviewRisks, benefits, alternatives and indications of allogenic blood transfusions.
Allogeneic red blood cell (RBC) transfusions are associated with multiple disadvantages, such as limited availability, high costs, multiple risks and side effects. In addition, large outcome studies comparing liberal (hemoglobin transfusion trigger range 9-10 g/dL) and restrictive (hemoglobin transfusion trigger range 7-9 g/dL) transfusion regimens still need to be performed for surgical patients. Different transfusion alternatives are known for the pre-, intra- and postoperative period. ⋯ RBC transfusions are recommended under the following circumstances: for hemoglobin levels <6 g/dL and for physiologic signs of inadequate oxygenation such as hemodynamic instability, oxygen extraction rate >50% and myocardial ischemia, detectable by new ST-segment depressions >0.1 mV, new ST-segment elevations >0.2 mV or new wall motion abnormalities by transesophageal echocardiography. The aim of this article is to review the efficacy, risk and side effects of RBC transfusions, to discuss transfusion alternatives and to summarize current indications for RBC transfusions. This information will help the physician to judiciously use RBC transfusions when they are indeed indicated.