British journal of anaesthesia
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Letter Case Reports
Fire and explosion hazards in operating theatres: a reply and new evidence.
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A simple apparatus and a method are described by which an exact end-point can be attained in inflating the bronchial cuff of a double-lumen tube, and accidental collapse of the cuff detected.
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Randomized Controlled Trial Clinical Trial
Effect of maternal position on fetal heart rate during extradural analgesia.
Using continuous cardiotocography, the effect of maternal position on fetal heart rate (FHR) was studied during extradural analgesia (EA) with either 50 or 100 mg of etidocaine without adrenaline for labour and vaginal delivery. Of 70 healthy parturients, 39 were supine and 40 were in the lateral position. ⋯ Transient abnormal patterns occurred in 26 patients, 22 (56%) in the supine group and four (10%) in the lateral group, a significant difference (P less than 0.001). The decrease in arterial pressure (AP) did not differ between the groups, but the frequency of abnormal FHR associated with a small or moderate decrease in AP (30% or less) was greater in the supine (51%) than in the lateral group (3%).
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Five hundred patients receiving one of three different formulations of etomidate were observed on the 2nd and 3rd days after operation for possible venous sequelae. The total frequency of sequelae was 8% or more, the greatest being with the propylene glycol formulation (23%). Formulation of the drug and total dose employed were the most important factors influencing venous sequelae, which were not related to pain on injection.