Time course of end-tidal desflurane concentration during delivery and elimination according to the type and location of filters in a semi-closed circuit system / 대한마취과학회지
Korean Journal of Anesthesiology
;
: 392-396, 2015.
Article
in English
| WPRIM
| ID: wpr-11202
ABSTRACT
BACKGROUND:
The aim of this study was to determine whether the end-tidal concentration of desflurane would be affected by a breathing circuit system filter attached at two different positions in anesthetic breathing circuit systems.METHODS:
An artificial lung was ventilated under five different conditions. The first group was without any filter or desflurane (n = 5, sham), the second was with desflurane but without any filter (n = 10, control), the third group had a bacterial filter on the expiratory limb (n = 10), and the fourth and fifth groups had a viral/bacterial filter added on the expiratory limb (n = 10) or at the Y-piece of the breathing circuit (n = 10), respectively. In all groups except the sham, administration of 10% desflurane was performed for 5 minutes and then stopped for 5 minutes.RESULTS:
The mean (SD) end-tidal concentration of desflurane for the groups described above peaked at 0 (0), 9.8 (0.1), 9.8 (0.1), 8.5 (0.1), and 6.7% (0.1) (P < 0.001), respectively. There was no difference in the desflurane concentrations and the expired tidal volume over time between the control and bacterial group, but there was a significant difference between the control and the fourth and fifth groups (P < 0.001).CONCLUSIONS:
Filters can affect the expiratory desflurane concentration during anesthesia.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Respiration
/
Tidal Volume
/
Extremities
/
Anesthesia
/
Lung
Language:
English
Journal:
Korean Journal of Anesthesiology
Year:
2015
Type:
Article
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