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  • Title: [Batching of low-concentration anesthetics with evaporators used in apparatuses for inhalation anesthesia].
    Author: Isaev IV, Morozov VIu.
    Journal: Med Tekh; 2005; (6):40-2. PubMed ID: 16491663.
    Abstract:
    The accuracy of the anesthetic vaporizers with modern vaporizing devices is complicated by necessity of providing small anesthetic vapor concentration for a wide range of gas flows, especially at small flows, and at use of a combination of inhalation anesthesia with intravenous one. Compliance with the requirements of the international standards concerning the accuracy of low-concentration anesthetic vapor batching also does not provide management of anesthesia depth at various stages of surgical operations. The problem is solved well by replacement traditional vaporizers with so-called barbotage ones equipped by adjustment of vapor concentration by modem electronic methods. It is even more promising to use direct injection of the liquid anesthetics into the respiratory contour of infusion pump. However, because individual sensitivity of patients to anesthetics is rather variable, these devices do not provide regulation of the depth of anesthesia. Therefore, stability rather than accuracy of batching of low-concentration anesthetics with evaporators used in apparatuses for inhalation anesthesia is of cardinal importance, Methods of objective instrumental evaluation of the depth of anesthesia require further research and implementation.
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