Acta anaesthesiologica Scandinavica
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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
The use of acute normovolemic hemodilution in paediatric cardiac surgery.
Acute normovolemic hemodilution (ANH) is considered safe and effective in decreasing perioperative transfusion in paediatric populations undergoing high blood-loss surgeries. We determined the association between ANH and the intraoperative use of allogeneic blood products in paediatric cardiac surgery patients. ⋯ We found a reduction in the administration of blood products and lower postoperative blood losses associated with the use of ANH in paediatric cardiac surgery patients. The data suggest that ANH might be beneficial in reducing perioperative morbidity in this patient population.
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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
Effective dose of dexmedetomidine as an adjuvant sedative to peripheral nerve blockade in elderly patients.
The median effective dose (ED50 ) of sedative dexmedetomidine adjuvant to peripheral nerve block (PNB) has not yet been verified in elderly patients. This study assessed the ED50 of intravenous dexmedetomidine for sedation in elderly patients who were undergoing total knee arthroplasty (TKA) with PNB. ⋯ We determined the ED50 for sedation using intravenous dexmedetomidine adjuvant to PNB in elderly patients. The ED50 of dexmedetomidine in the middle-old group decreased by 33% compared with that in the young-old group with a mean age difference of 11 years between the two groups.