British journal of anaesthesia
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Randomized Controlled Trial
Gabapentin attenuates the pressor response to direct laryngoscopy and tracheal intubation.
Laryngoscopy and tracheal intubation increase blood pressure and heart rate (HR). The aim of the present study was to investigate the effect of gabapentin when given before operation on the haemodynamic responses to laryngoscopy and intubation. ⋯ Gabapentin, under the present study design attenuates the pressor response but not the tachycardia associated with laryngoscopy and tracheal intubation.
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Randomized Controlled Trial Comparative Study
Emergence and recovery in children after desflurane and isoflurane anaesthesia: effect of anaesthetic duration.
We hypothesized that increasing duration of inhalation anaesthesia is associated with slower emergence and recovery in children, and that this effect would be less marked with desflurane in comparison with isoflurane. ⋯ The rate of recovery in children after exposure to desflurane was faster than those patients receiving isoflurane; recovery from desflurane, but not isoflurane, was relatively unaffected by the duration of anaesthesia.
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Randomized Controlled Trial
Nitrous oxide does not change the incidence of postoperative delirium or cognitive decline in elderly surgical patients.
Postoperative delirium and cognitive decline are common in elderly surgical patients after non-cardiac surgery. Despite this prevalence and clinical importance, no specific aetiological factor has been identified for postoperative delirium and cognitive decline. In experimental setting in a rat model, nitrous oxide (N(2)O) produces neurotoxic effect at high concentrations and in an age-dependent manner. Whether this neurotoxic response may be observed clinically has not been previously determined. We hypothesized that in the elderly patients undergoing non-cardiac surgery, exposure to N(2)O resulted in an increased incidence of postoperative delirium than would be expected for patients not receiving N(2)O. ⋯ Exposure to N(2)O resulted in an equal incidence of postoperative delirium when compared with no exposure to N(2)O.
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Review Randomized Controlled Trial
Ondansetron does not reduce the shivering threshold in healthy volunteers.
Ondansetron, a serotonin-3 receptor antagonist, reduces postoperative shivering. Drugs that reduce shivering usually impair central thermoregulatory control, and may thus be useful for preventing shivering during induction of therapeutic hypothermia. We determined, therefore, whether ondansetron reduces the major autonomic thermoregulatory response thresholds (triggering core temperatures) in humans. ⋯ /b>. Ondansetron appears to have little potential for facilitating induction of therapeutic hypothermia.
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Randomized Controlled Trial
Magnesium sulphate as a technique of hypotensive anaesthesia.
This randomized, double-blind, placebo-controlled study was designed to assess the effect of perioperatively administered i.v. magnesium sulphate as a technique of hypotensive anaesthesia. ⋯ Magnesium sulphate led to a reduction in arterial pressure, heart rate, blood loss and duration of surgery. Furthermore, magnesium infusion alters anaesthetic dose requirements and emergence time.