Efficiency of CONTRAfluran ™ in reducing sevoflurane pollution from maintenance anaesthesia in minimal flow end‐tidal control mode for laparoscopic surgery: Efficiency of CONTRAfluran™
Authors' conclusion
Over half of the sevoflurane administered was not captured by the CONTRAfluran canister when minimal flow techniques were used, likely due to residual accumulation of sevoflurane in the patient after tracheal extubation or, to a lesser extent, due to ventilation system leakage.
Study context
- Population
- Adults scheduled for general or bariatric laparoscopic surgery under sevoflurane anaesthesia
- Participants
- 70 adults
- Outcome
- Total retention efficiency (fraction of all consumed sevoflurane captured by the CONTRAfluran canister)
Methodological detailssingle-group, minimal flow end-tidal control mode
- Single-group
- Minimal flow end-tidal control mode
Main finding
As reported in the abstract
Sevoflurane captured by CONTRAfluran
| Group | Value | Retention efficiency (% of all sevoflurane administered) |
|---|---|---|
| CONTRAfluran | mean 4.82 (SD 1.41) ml | 45% (95%CI 42-48%) |
CONTRAfluran
Valuemean 4.82 (SD 1.41) ml
Retention efficiency (% of all sevoflurane administered)45% (95%CI 42-48%)
Observational data: associations, not effects.
Secondary outcomes
Retention by phase
- Highest retention during the washout phase
Correlation of retention efficiency with case duration
- Retention efficiency did not correlate with case duration
Original publication
Efficiency of CONTRAfluran ™ in reducing sevoflurane pollution from maintenance anaesthesia in minimal flow end‐tidal control mode for laparoscopic surgery: Efficiency of CONTRAfluran™. Anaesthesia. Published 12 April 2024. doi:10.
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