Environmental monitoring during gaseous induction with sevoflurane.
نویسندگان
چکیده
Recent research has shown that gaseous induction in adults with sevoflurane is an acceptable technique. This study was undertaken to assess if gaseous induction using sevoflurane carried in both oxygen alone, and in nitrous oxide and oxygen combined, would provide acceptable pollution levels. As an occupational exposure standard has not been set for sevoflurane, we used the target level of 20 ppm set by the manufacturer. Environmental monitoring was carried out in the anaesthetic room during eight lists where consecutive triple vital capacity sevoflurane inductions were performed. Time-weighted averages for both gases over the duration of the lists were well below the occupational exposure standards (mean 1.1 (range 0.6-1.7) for sevoflurane and 17.3 (12-23) for nitrous oxide). There were high peak concentrations during the induction process (8.3 (4.1-17) for sevoflurane and 172.4 (65-310) for nitrous oxide) although these decreased to low concentrations between anaesthetic inductions. Personal sampling was carried out from the anaesthetist's breathing zone and concentrations were also low (1.2 (0.8-2.1) for sevoflurane and 45.9 (10.1-261.6) for nitrous oxide.
منابع مشابه
بررسی مقایسهای تاثیر هالوتان، ایزوفلوران و سووفلوران بر عمق بیهوشی با استفاده از مانیتورینگ BIS در اعمال کاشت حلزون در کودکان 6-2 ساله در بیمارستان حضرت رسول اکرم(ص)، سال 84-1383
Background & Aim: One of the most important points in the pharmacology of Anesthetic drugs is the their effect on the depth anesthesia and for its assessment recently an important marker BIS is used. In this study we evaluated the effect of three drugs namely Halothane, Isoflurane and Sevoflurane on depth of anesthesia using BIS monitoring. Patients and Methods: This study was performed on ...
متن کاملShort-term inhalation of sevoflurane during induction of general anesthesia can inhibit the A-line ARX index response to intubation: a randomized trial.
BACKGROUND Monitoring hypnotic depth is used to prevent awareness during general anesthesia. We used the A-line ARX index (AAI) to assess the effect of shortterm inhalation of sevoflurane in the prevention of intubation-induced inadequate hypnotic depth during anesthetic induction. METHODS Thirty patients were randomly divided into the sevoflurane and non-sevoflurane groups, both of which wer...
متن کاملComparison of hemodynamic effects of sevoflurane and ketamine as basal anesthesia by a new and direct monitoring during induction in children with ventricular septal defect
BACKGROUND Sevoflurane and ketamine are commonly used to obtain sedation and facilitate intravenous anesthetic induction in children undergoing cardiac surgery who are uncooperative. We used a new and direct systemic hemodynamic monitoring technique pressure recording analytical method and compared the hemodynamic effects of sevoflurane and ketamine to facilitate intravenous anesthetic inductio...
متن کاملRisk factors for the occurrence of electroencephalogram abnormalities during induction of anesthesia with sevoflurane in nonepileptic patients.
BACKGROUND The aim of this prospective study was to determine the risk factors of epileptiform discharge during induction with sevoflurane in healthy adult patients. METHODS Forty adult patients with American Society of Anesthesiologists physical status I were randomly allocated to one of four groups. Group A: Patients breathed 8% sevoflurane in oxygen (8 l/min) via a prefilled circuit. End-t...
متن کاملQuantification of epileptiform electroencephalographic activity during sevoflurane mask induction.
BACKGROUND Sevoflurane may induce epileptiform electroencephalographic activity leading to unstable Bispectral Index numbers, underestimating the hypnotic depth of anesthesia. The authors developed a method for the quantification of epileptiform electroencephalographic activity during sevoflurane anesthesia. METHODS Electroencephalographic data from 60 patients under sevoflurane mask inductio...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- British journal of anaesthesia
دوره 79 3 شماره
صفحات -
تاریخ انتشار 1997