Acta anaesthesiologica Scandinavica
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In order to reduce comsumption of inhalational anaesthetsics during high-flow anaesthesia, a system open in regard to oxygen, nitrogen and nitrous oxide, but closed to inhalational anaesthetics, was developed. This was achieved by a reflecting filter for inhalational anaesthetics made of active carbon. ⋯ The ACD can be used for administering the inhalational agents isoflurane and sevoflurane as an alternative to low-flow anaesthesia systems during surgery. It can also be used in intensive care units to administer sedation using isoflurane or sevoflurane to critically ill patients.
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Acta Anaesthesiol Scand · Oct 2013
Review Meta AnalysisIs general anaesthesia for caesarean section associated with postpartum haemorrhage? Systematic review and meta-analysis.
Although general anaesthesia was associated with greater blood loss than regional anaesthesia in this meta-analysis (only ~100 mL), this is of questionable significance, and meta-analysis of RCTs showed there was no greater risk of blood transfusion.
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Total hip and knee arthroplasty (THA and TKA) are frequently performed surgical procedures with excellent long-term functional outcomes. However, pain is pronounced in the early post-operative phase, especially after TKA. Glucocorticoids have proven to relieve post-operative pain, but a higher dose might be needed, as compared with the lower dose recommended to reduce post-operative nausea and vomiting (PONV). Prior to this PhD study, procedure-specific data were limited on the effects of high-dose glucocorticoid on post-operative pain and recovery in THA and TKA. So, the following question remained to be answered: does high-dose glucocorticoid added to a multimodal analgesic regime reduce pain and improve recovery after THA and TKA? ⋯ This PhD thesis render new knowledge by demonstrating - for the first time - detailed procedure-specific beneficial effects of a single pre-operative dose of MP, 125 mg IV, on acute post-operative analgesia in THA, and on acute post-operative analgesia and on other immediate recovery aspects in TKA. Noteworthy, these benefits were observed with MP added to a comprehensive multimodal oral analgesic regime consisting of paracetamol, celecoxib and gabapentin - and in TKA also to an intra-operative local infiltration analgesia regimen. However, current data in hip and knee surgery preclude firm safety conclusions, and call for large-scale studies to definitively clarify the risk-benefit ratio, before final recommendations can be made. Also, the shortage of dose-finding data calls for studies to define the minimal effective dose to provide post-operative analgesia.
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Acta Anaesthesiol Scand · Oct 2013
Comparative StudySevoflurane is less sensitive than halothane for in vitro detection of malignant hyperthermia susceptibility.
Sevoflurane is a known triggering agent of malignant hyperthermia (MH). The present study analyzed different effects of sevoflurane on skeletal muscle of MH susceptible and nonsusceptible individuals in vitro and compared the results to the standardized test protocol with halothane and caffeine. A potential influence of a present ryanodine receptor type 1 (RyR1) mutation was investigated. ⋯ Sevoflurane-induced contractures do not reliably detect MH susceptibility on an individual level. Therefore, sevoflurane is no suitable alternative for diagnostic use. Mutation-specific effects regarding contracture sizes after incubation with sevoflurane, halothane, or caffeine were not found.
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Acta Anaesthesiol Scand · Oct 2013
Diastolic dysfunction of the left ventricle is associated with pulmonary edema after renal transplantation.
Post-operative pulmonary complications are associated with high mortality and graft loss in renal transplantation recipients. Left ventricular diastolic dysfunction is not uncommon in patients with chronic renal failure, including those with preserved left ventricular systolic function. The purpose of this study was to determine the relationship between left ventricular diastolic dysfunction and incidence of post-operative pulmonary edema in renal transplantation recipients with preserved left ventricular systolic function. ⋯ Pre-operative left ventricular diastolic dysfunction correlated with the development of post-operative pulmonary edema in renal transplantation recipients. Meticulous intraoperative volume therapy is important to avoid post-operative pulmonary edema in such patients.