Canadian journal of anaesthesia = Journal canadien d'anesthésie
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Randomized Controlled Trial Clinical Trial
Esmolol blunts the haemodynamic responses to tracheal intubation in treated hypertensive patients.
To compare the ability of different bolus doses of esmolol to blunt the haemodynamic effects of laryngoscopy and tracheal intubation in treated hypertensive patients. ⋯ Esmolol 100 mg given as bolus, is effective as well as safe in blunting the haemodynamic responses to laryngoscopy and tracheal intubation in treated hypertensive patients.
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Randomized Controlled Trial Clinical Trial
Saphenous nerve anaesthesia--a nerve stimulator technique.
This two part study was undertaken to assess both the feasibility of identifying the saphenous nerve with a nerve stimulator and to assess the efficacy of saphenous nerve anaesthesia with electrical isolation of the nerve. ⋯ (Part I): The first part of the study established the feasibility of electrical identification of the saphenous nerve and demonstrated that the NS technique could be utilized to provide superior anaesthesia of the saphenous nerve when compared with a previously validated LOR technique. (Part II): The clinical utility of the NS technique of saphenous nerve block was successfully demonstrated.
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Randomized Controlled Trial Clinical Trial
Sevoflurane and isoflurane impair edrophonium reversal of vecuronium-induced neuromuscular block.
A dose-response relationship study for edrophonium to examine the modification of volatile anaesthetics on reversal of vecuronium block. ⋯ One MAC sevoflurane and isoflurane anaesthesia impair edrophonium reversal of vecuronium block to a similar degree.
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Randomized Controlled Trial Clinical Trial
Determination of end-tidal sevoflurane concentration for tracheal intubation in children with the rapid method.
Using the conventional method of determining the end-tidal concentration of inhalational anaesthetic for tracheal intubation, a constant end-tidal anaesthetic concentration is maintained for at least 15 min. As sevoflurane has a low tissue/gas partition coefficient, it seems possible in paediatric patients to determine end-tidal concentrations for tracheal intubation more rapidly by using a high inspired concentration. We determined ED50 and ED95 of sevoflurane for tracheal intubation, the end-tidal concentrations that prevented 50% and 95% of patients from coughing and gross purposeful muscular movements after intubation. ⋯ In paediatric patients, this method enabled determination of ED50 and ED95 end-tidal sevoflurane concentrations for tracheal intubation without obtaining a long stabilization period.
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This study assessed the accuracy of photometer based haemoglobin (Hb) determination technology (HemoCue) when used by different anaesthetists in situations of rapidly changing Hb values during anaesthesia. ⋯ The HemoCue haemoglobinometer has sufficient accuracy to support treatment decisions regarding blood transfusions.