British journal of anaesthesia
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The effects of halothane and of prior administration of suxamethonium on atracurium neuromuscular blockade have been investigated. Halothane potentiated the intensity of block produced by atracurium 0.1 or 0.15 mg kg-1. Duration of block was prolonged (27%) by halothane with a small dose of atracurium (0.15 mg kg-1) and was also prolonged (29%) with larger doses of atracurium (0.4 mg kg-1). Prior suxamethonium 1 mg kg-1 increased the intensity of block after atracurium 0.15 mg kg-1 from 52% (control) to 84%, but caused minimal change in duration of atracurium blockade.
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Randomized Controlled Trial Clinical Trial
Intranasal administration of nitroglycerine attenuates the pressor response to laryngoscopy and intubation of the trachea.
The intranasal administration of nitroglycerine (NTG) was undertaken in 35 adult female patients 1 min before the induction of anaesthesia. A control group consisting of 32 patients did not receive NTG. Systolic arterial pressure (SAP) and heart rate (HR) were recorded before the induction of anaesthesia and at 0, 3, and 5 min after tracheal intubation. ⋯ SAP did increase significantly in the control group. HR was increased in both groups immediately after intubation (P less than 0.001 and P less than 0.001 respectively). NTG administered intranasally is a safe, simple and effective method to attenuate the hypertensive response to laryngoscopy and tracheal intubation.
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The antagonistic action of a bolus dose of edrophonium 0.75 mg kg-1 on the neuromuscular blockade induced by atracurium was studied in 10 patients anaesthetized with nitrous oxide and narcotic supplements. The reversal agent was administered when the twitch height had recovered spontaneously to approximately 20% of control. ⋯ Clinically adequate reversal (train-of-four ratio of 75% or better) was achieved 6.6 +/- 1.5 min following injection of the edrophonium and there was no evidence of subsequent muscle weakness. The possible advantages of the clinical use of edrophonium in producing a rapid reversal of atracurium blockade are discussed.
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Comparative Study
Comparative study of atracurium, vecuronium (Org NC 45) and pancuronium.