Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Oct 1998
Randomized Controlled Trial Clinical TrialUnilateral spinal anaesthesia with hyperbaric bupivacaine.
The dosage of local anaesthetic and the time the patient must be kept in the lateral decubitus position for a unilateral spinal anaesthesia is not known. The aim of this study was to determine the ideal dosage of hyperbaric bupivacaine and the time required for the lateral decubitus position for a unilateral spinal block. ⋯ For unilateral spinal anaesthesia in lower extremity operations, 2ml 0.5% hyperbaric bupivacaine solution for operations above the knee and 1.5 ml 0.5% hyperbaric bupivacaine solution for operations below the knee and keeping the patients for 10 min in the lateral decubitus position were found to be appropriate.
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Acta Anaesthesiol Scand · Oct 1998
Randomized Controlled Trial Clinical TrialSurgeon's experience as a factor for emetic sequelae after middle ear surgery.
To test the hypothesis that an experienced surgeon is associated with less postoperative nausea and vomiting (PONV). ⋯ The patients operated by residents need more aggressive prophylaxis for PONV than those operated by specialists in middle ear surgery.
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Acta Anaesthesiol Scand · Oct 1998
Randomized Controlled Trial Clinical TrialPostdural puncture headache and transient neurologic symptoms in children after spinal anaesthesia using cutting and pencil point paediatric spinal needles.
In the last decade the use of spinal anaesthesia (SA) in paediatric anaesthesia has increased. In adults, pencil point spinal needles are supposed to be less traumatic and hence to be superior compared with cutting point needles in respect of postpuncture complaints. In children, the use of spinal needles with a special tip design have not been compared. The aim of this study was to study the clinical utility and postpuncture characteristics of four newly designed spinal needles in paediatric surgery. ⋯ SA using bupivacaine and the study needles produced smooth and safe anaesthesia for paediatric surgery with a high success rate. PDPH after SA is as common in children (5%) as in adults although most often mild and short lasting. SA using bupivacaine can cause transient radicular irritation.
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Acta Anaesthesiol Scand · Oct 1998
Randomized Controlled Trial Clinical TrialHydroxyethyl starch impairs in vitro coagulation.
Artificial colloids affect haemostasis. Particularly hydroxyethyl starch (HES) solutions may have detrimental effects on haemostatic mechanisms. ⋯ We conclude that HES at 20 and 50 vol.% concentrations has an adverse effect on in vitro measures of coagulation. A 50% dilution with high molecular weight HES seems to impair coagulation more than low molecular weight HES. Ringer's acetate and albumin caused a hypercoagulable state at a concentration of 20 vol.%, but the higher concentration decreased coagulability.