Background:
@EN Vaporizers convert liquid anesthetics into measured amount of vapor that are added to the fresh gas mixture to produce known concentrations of anesthetics. As with anesthesia machines, mordern precision vaporizers require regular checks with
respect
to technical safety by experts. Some private hospitals in Korea do not have had a anesthesiologist belong exclusively to hospital. Therefore it is difficult to perform a regular checks of anesthesia machine especially vaporizers. We had a
question
about
the accuracy of vaporizer output which used in the private hospitals.
@ES Methods:
@EN We investigated outputs of 47 vaporizers used in 23private hospitals and 5 general hospitals around Kangdong Gu and Kangnam Gu in Seoul, Korea. Anesthetic agent monitor(Biochem anesthetic agent monitor 8100, Waukesha, Wisc, USA) was use and
its
analysis value was 0.1 vol%. 50 vol% O2 and 50 vol% N2O were used as a carrier gas.
The flow rates of the carrier gas were 4 1/min. Dial settings were 0.5, 1, 1.5, 2, 3 vol%.
@ES Results:
@EN The results was that vaporizers which had the inaccuracy ranges of concentration less than ±0.5 vol% was 76.6% of 47 vaporizers, ±1 vol% was 93.6%. And above ±1 vol% was 6.4% of all.
@ES Conclusions;
@EN This research concludes that great care needed when the anesthesiologist strange to the vaporizers in the private hospitals operates the vaporizers. (Korean J Anesthesiol 1996; 30: 658~662)
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