Canadian journal of anaesthesia = Journal canadien d'anesthésie
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Randomized Controlled Trial Comparative Study Clinical Trial
Maintenance and recovery characteristics after sevoflurane or propofol during ambulatory surgery in children with epidural blockade.
To compare the maintenance and recovery characteristics after sevoflurane with those after propofol in children with epidural blockade. ⋯ Sevoflurane and propofol exhibit similar maintenance and recovery profiles when combined with epidural analgesia in children undergoing ambulatory surgery.
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Randomized Controlled Trial Clinical Trial
Epidural saline solution prior to local anaesthetic produces differential nerve block.
The loss-of-resistance technique is generally used to identify the epidural space usually with normal saline. However, the effect of epidural saline on anaesthetic spread has not been demonstrated. The purpose of this study was to determine whether epidural saline affected the anaesthetic level and the quality of analgesia. ⋯ Our results suggest that a large volume of saline solution injected in the epidural space to elicit loss-of-resistance dilutes the local anaesthetic solution, resulting in reduced spread of the block to pinprick.
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Randomized Controlled Trial Comparative Study Clinical Trial
Postdural puncture headache after spinal anaesthesia in young orthopaedic outpatients using 27-g needles.
Two large studies reported a very low rate (0.5-1.8%) of postdural puncture headache (PDPH) with the use of 27-G spinal needles. We suspected that it might be higher in young ambulatory patients. The purpose of this study was to establish the rate prospectively in such a patient population using two types of needles. ⋯ The rate of PDPH was higher than in large published studies with 27-G Quincke and Whitacre needles and greater in women than in men.
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Randomized Controlled Trial Clinical Trial
Haemodynamic effects of induction of general anaesthesia with propofol during epidural anaesthesia.
To clarify whether propofol administration during thoracic or lumbar epidural anaesthesia intensifies the haemodynamic depression associated with epidural anaesthesia. ⋯ The hypotensive effects of propofol are additive to those of epidural anaesthesia, resulting in a profound decrease in mean arterial pressure.
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Randomized Controlled Trial Clinical Trial
Clonidine premedication modifies responses to adrenoceptor agonists and baroreflex sensitivity.
To evaluate the effects of clonidine on responses to adrenoceptor agonists and baroreflex sensitivity, we examined arterial blood pressure (AP) responses to phenylephrine and heart rate (HR) responses to isoproterenol and baroreflex sensitivity (HR response to AP changes due to phenylephrine or nitroglycerin). ⋯ The results suggest that premedication with clonidine might enhance critical hypotension during anaesthesia and surgery, but restoration both of AP and HR decrease can be achieved effectively by phenylephrine and isoproterenol i.v., respectively.