Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · May 2014
Controlled Clinical TrialIntrathecal fentanyl decreases the optimal effect site concentration of propofol during spinal anaesthesia.
The aim of this study was to assess the possible difference in the optimal effect site concentration of propofol for conscious sedation during spinal anaesthesia with or without intrathecal fentanyl in patients undergoing urologic surgery. The hypothesis was that intrathecal fentanyl would decrease the effect site concentration of propofol needed for conscious sedation. ⋯ The EC50 of the effect-site concentration of propofol for sedation decreased from 1.67 ± 0.28 mcg/ml to 0.87 ± 0.15 mcg/ml with the addition of 25 mcg fentanyl to a spinal anaesthetic in patients undergoing urologic surgery.
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Acta Anaesthesiol Scand · May 2014
Observational StudyThromboelastometry as a supplementary tool for evaluation of hemostasis in severe sepsis and septic shock.
Sepsis leads to disruption of hemostasis, making early evaluation of coagulation essential. The aim of this study was to provide a detailed investigation of coagulation and the use of blood products in patients with severe sepsis or septic shock, admitted to a multidisciplinary intensive care unit. ⋯ ROTEM(®) demonstrated an overall normo-coagulation, whereas the conventional coagulation tests and thrombin generation analyses mainly reflected hypocoagulation. Given the dynamic and global features of ROTEM(®), this analysis may be a relevant supplementary tool for the assessment of hemostasis in patients with severe sepsis or septic shock.
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Acta Anaesthesiol Scand · May 2014
Heparin-binding protein (HBP/CAP37) - a link to endothelin-1 in endotoxemia-induced pulmonary oedema?
Vascular leakage and oedema formation are key components in sepsis. In septic patients, plasma levels of the vasoconstrictive and pro-inflammatory peptide endothelin-1 (ET-1) correlate with mortality. During sepsis, neutrophils release heparin-binding protein (HBP) known to increase vascular permeability and to be a promising biomarker of human sepsis. As disruption of ET-signalling in endotoxemia attenuates formation of oedema, we hypothesized that this effect could be related to decreased levels of HBP. To investigate this, we studied the effects of ET-receptor antagonism on plasma HBP and oedema formation in a porcine model of sepsis. In addition, to further characterize a potential endothelin/HBP interaction, we investigated the effects of graded ET-receptor agonist infusions. ⋯ ET-receptor antagonism reduces porcine endotoxin-induced pulmonary oedema and plasma levels of the oedema-promoting protein HBP. Moreover, direct ET-receptor stimulation distinctively increases plasma HBP. Together, these results suggest a novel mechanism by which ET-1 contributes to formation of oedema during experimental sepsis.
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Acta Anaesthesiol Scand · May 2014
Adrenaline increases blood-brain-barrier permeability after haemorrhagic cardiac arrest in immature pigs.
Adrenaline (ADR) and vasopressin (VAS) are used as vasopressors during cardiopulmonary resuscitation. Data regarding their effects on blood-brain barrier (BBB) integrity and neuronal damage are lacking. We hypothesised that VAS given during cardiopulmonary resuscitation (CPR) after haemorrhagic circulatory arrest will preserve BBB integrity better than ADR. ⋯ Resuscitation with ADR as compared with VAS after haemorrhagic circulatory arrest increased the ICP and impaired cerebrovascular autoregulation more profoundly, as well as exerted an increased BBB disruption though no significant difference in neuronal injury was observed.
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Acta Anaesthesiol Scand · May 2014
Randomized Controlled Trial Comparative StudyKetamine and magnesium association reduces morphine consumption after scoliosis surgery: prospective randomised double-blind study.
Intraoperative ketamine and magnesium improves post-operative analgesia after scoliosis surgery when compared to ketamine alone.
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