Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Apr 2015
Observational StudyPeripheral venous lactate at admission is associated with in-hospital mortality, a prospective cohort study.
The prognostic value of blood lactate as a predictor of adverse outcome in the acutely ill patient is unclear. The aim of this study was to investigate if a peripheral venous lactate measurement, taken at admission, is associated with in-hospital mortality in acutely ill patients with all diagnosis. Furthermore, we wanted to investigate if the test improves a triage model in terms of predicting in-hospital mortality. ⋯ We found elevated admission peripheral venous lactate to be independently associated with in-hospital mortality in the acutely ill patient admitted to the emergency department. Patients with a lactate>4 mmol/l at hospital admission should be considered triaged to the most urgent triage category.
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Acta Anaesthesiol Scand · Apr 2015
Viscoelastic haemostatic assays and fibrinogen concentration tests during haemodilution.
The efficacy of concentrates of fibrinogen and factor XIII in hypothermia and haemodilution has not yet been completely investigated. Clauss fibrinogen measurement may overestimate fibrinogen concentrations during in vitro haemodilution with hydroxyethyl starch (HES). ⋯ Fibrinogen concentrate increased coagulation more after haemodilution with HA than synthetic colloids, but equal with or less than after crystalloid haemodilution. FXIII had an additional effect to that of fibrinogen. Hypothermia and haemodilution with HES interacted to decrease coagulation. Fibrinogen ± FXIII increased coagulation also at 33°C. Two Clauss methods after in vivo HES haemodilution did not overestimate fibrinogen; however, fibrinogen-dependent clot strength decreased more than fibrinogen concentration. Between-method variability with seven Clauss methods was high. These findings support the use of fibrinogen concentrate after resuscitation with HA, also at hypothermia, but question the use of colloids, especially HES, in resuscitation. Clauss fibrinogen methods need to improve.
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Acta Anaesthesiol Scand · Apr 2015
Clinical TrialPre-operative baroreflex sensitivity and efferent cardiac parasympathetic activity are correlated with post-operative pain.
A maladaptation of the autonomic nervous system may been seen in patients with chronic pain that includes persistent changes in the autonomic tone, increased heart rate, and reduced heart rate variability and baroreflex sensitivity. Baroreflex sensitivity and acute pain intensity have been reported to be inversely correlated. However, it is unknown whether the same correlation applies with regard to post-operative pain. In the present study, autonomic function was measured in patients scheduled for minor hand surgery and correlated with early and persistent pain after the procedure. Thus, the cause (autonomic imbalance) was present before the effect (post-operative pain). Our primary hypothesis was that a lower level of pre-operative baroreflex sensitivity is correlated with increased early post-operative pain. ⋯ The findings suggest that a low pre-operative level of baroreflex sensitivity is associated with higher post-operative pain intensity. To our knowledge, this is the first study to show the correlation between baroreflex sensitivity and post-operative pain.
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Acta Anaesthesiol Scand · Apr 2015
Randomized Controlled TrialTransversus abdominis plane block vs. wound infiltration in Caesarean section: a randomised controlled trial.
Transversus abdominus plane block after caesarean section does not reduce morphine consumption when compared to wound infiltration with equivalent local anaesthesia.
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Acta Anaesthesiol Scand · Apr 2015
Randomized Controlled TrialOptimising abdominal space with deep neuromuscular blockade in gynaecologic laparoscopy - a randomised, blinded crossover study.
Insufflation of the abdomen during laparoscopy improves surgical space, but may cause post-operative shoulder pain. The incidence of shoulder pain is reduced using a lower insufflation pressure, but this may, however, compromise the surgical space. We aimed at investigating whether deep neuromuscular blockade (NMB) would enlarge surgical space, measured as the distance from the sacral promontory to the trocar in patients undergoing gynaecologic laparoscopy. ⋯ Deep NMB enlarged surgical space measured as the distance from the sacral promontory to the trocar. The enlargement, however, was minor and the clinical significance is unknown. Moreover, deep NMB improved surgical conditions when suturing the abdominal fascia.