Der Anaesthesist
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Biography Historical Article
[The Ombrédanne ether-inhaler. A contribution to the history of ether-anesthesia].
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The neuromuscular blocking and circulatory effects of a recently synthesized relatively short acting nondepolarizing muscle relaxant, Duador, have been investigated in anaesthetized patients. Duador appears to be a potent muscle relaxant with intermediate duration of action. It had no cumulative effects even after as many as five maintenance doses. ⋯ The increase in heart rate was inversely proportional to the control rate. Repeat doses did not cause further elevation in frequency. Duador had no effect on mean blood pressure.
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The increasing use of cannulation of the internal jugular vein led to an increase of complications associated with this procedure. In most cases the reason is incorrect puncture. ⋯ The optimal site of puncture was detected with a sector scan by measuring volumes in both internal jugular veins in 12 patients dependent on the position and rotation of the head. As a result of our study we propose a modification in the cannulation technique with a headdown position and 45 degrees rotation of the head to the opposite site without palpating the carotid artery.
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Historical Article
[The history of anesthesia apparatus: basic principles].
The beginnings of modern anesthetic equipment date back to Morton's inhalation flagon in 1846. The numerous devices developed and introduced subsequently can be divided into four groups: 1. Simple ether and chloroform masks for open inhalation anesthesia, from Simpson (1847) to Brown (1928). 2. ⋯ In addition, reducing valves, flow meters and vaporizers were developed. The first anaesthetic apparatus with circle system and CO2-absorber was constructed in 1925 by the Dräger factory in Lübeck. Sudeck and Schmidt introduced this technique of anaesthesia in the university hospital of Hamburg-Eppendorf between 1920 and 1925.