Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Jul 2018
THAM administration reduces pulmonary carbon dioxide elimination in hypercapnia - an experimental porcine study.
In a previous study, we found a rebound of arterial carbon dioxide tension (PaCO2 ) after stopping THAM buffer administration. We hypothesized that this was due to reduced pulmonary CO2 elimination during THAM administration. The aim of this study was to investigate this hypothesis in an experimental porcine hypercapnic model. ⋯ In this respiratory acidosis model, THAM reduced PaCO2 , but seemed not to increase the total CO2 elimination due to decreased pulmonary CO2 excretion, suggesting only cautious use of THAM in hypercapnic acidosis.
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Acta Anaesthesiol Scand · Jul 2018
Randomized Controlled TrialSensory distribution of the lateral femoral cutaneous nerve block - a randomised, blinded trial.
The lateral femoral cutaneous nerve (LFCN) block may be used for post-operative pain management in patients undergoing total hip arthroplasty. The aim of this trial was to investigate the sensory coverage of the posterior and the lateral incision lines and the involvement of the femoral nerve after an LFCN block. ⋯ An LFCN block consisting of 8 ml 0.75% ropivacaine had limited coverage of the posterior and lateral incision lines.
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Acta Anaesthesiol Scand · Jul 2018
Simulation-based point-of-care ultrasound training: a matter of competency rather than volume.
Point-of-care ultrasonography plays an increasingly important role in the initial resuscitation of critically ill patients but acquisition of the skill is associated with long learning curves. The skills required to perform ultrasound examinations can be practiced in a simulated setting before being performed on actual patients. The aim of this study was to investigate the learning curves for novices training the FAST protocol on a virtual-reality simulator. ⋯ Novices can attain mastery learning levels using simulation-based ultrasound training with less than, on average, 2 h of practice. However, we found large variations in the amount of training needed, which raises questions about the adequacy of current volume-based models for determining ultrasound competency.
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Acta Anaesthesiol Scand · Jul 2018
Multicenter Study Comparative StudyEpidural extension failure in obese women is comparable to that of non-obese women.
Management of labor epidurals in obese women is difficult and extension to surgical anesthesia is not always successful. Our previous retrospective pilot study found epidural extension was more likely to fail in obese women. This study used a prospective cohort to compare the failure rate of epidural extension in obese and non-obese women and to identify risk factors for extension failure. ⋯ The failure rate of epidural extension did not differ significantly between the groups. Further research is needed to determine the influence of body mass index > 50 kg/m2 on epidural extension for cesarean section.