Abstract
Aim. To define concentrations of sevoflurane at the anesthetist working area during the operation. To compare the changes of the sevoflurane concentration depending on the anesthetic vaporizer design. Changes of the sevoflurane concentration in operating room air during operations on the abdominal organs duration 2:30–3:00 hours, depending on the vaporizer design (group 1–3 patients, vaporizer system “Quick Fill”; group 2–3 patients, the vaporizer that have a “direct casting”) were studied. Determination of the anesthetic air concentration in the working area has been provided (1–1.5 m from the anesthesiologist and the patient’s head) at the following stages: 1. Before filling the anesthetic vaporizer. 2. After filling the vaporizer (sevoflurane vial 250 ml) . 3. After the induction of anesthesia and tracheal intubation. 4. After sevoflurane saturation of the patient (fresh gas flow 1 l\min). 5 . After a patient extubation. Determination of the sevoflurane concentration was carried out by gas chromatography. Results. The sevoflurane concentration in air in group 2 was higher than the standard recommended concentration of the EU and the United States (2 ppm).
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