Atmospheric pollution in operating theatres

Hawkins, T. J.

doi:10.1111/j.1365-2044.1973.tb00514.x

Cited by 11 publications

(4 citation statements)

References 37 publications

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“…Enhanced elimination of anesthetic could possibly make it easy to perform prompt neurologic evaluation of neurosurgical patients9 or awakening test during spinal surgery,14 or fasten recovery from unintended inhaled anesthetic overdoses and malignant hyperthermia 15,16. As for environmental effects, charcoal filter attached in anesthetic scavenger system could be helpful for theatre-atmospheric pollution by reducing the amount of inhaled anesthetics released from the tube or machine,17,18 and hopefully to ozone layer by reducing halogenated volatile-induced destruction 19…”

Section: Discussionmentioning

confidence: 99%

Effect of Charcoal Filter on the Emergence from Sevoflurane Anesthesia in a Semi-Closed Rebreathing Circuit

Chang

Choi

et al. 2011

Yonsei Med J

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PurposeA charcoal filter attached within the anesthetic circuit has been shown to efficiently adsorb halothane or isoflurane, thus hastening anesthetic recovery in low or minimal flow system. This study was intended to demonstrate whether the charcoal filter enhances the recovery time from sevoflurane anesthesia using a semi-closed circuit system.Materials and MethodsThirty healthy patients scheduled for elective surgery under sevoflurane anesthesia were randomly assigned to the charcoal filter or control group. Upon completion of surgery, the end-tidal concentration of sevoflurane was maintained at 2.0 vol%. A charcoal filter was attached to the expiratory limb of the breathing circuit of charcoal filter group subjects. After sevoflurane was discontinued, ventilation was controlled with the same minute volume as the intra-operative period at a fresh gas flow rate of 5 L·min-1 with 100% O2. The elimination kinetics of sevoflurane from end-tidal concentration, Bispectral index and times of eye opening and extubation were obtained.ResultsThe exponential time constant (τ) of alveolar sevoflurane concentration in the charcoal filter group was significantly shorter than that in the control group (1.7±0.5 vs. 2.5±1.1 min, p=0.008). The charcoal filter hastened rapid eye opening (11.1±3.8 vs. 14.8±3.0 min, p=0.007) and extubation (11.9±3.9 vs. 15.3±3.2 min, p=0.014), compared to the control group.ConclusionA charcoal filter enhances the recovery from sevoflurane anesthesia with a semi-closed rebreathing circuit.

show abstract

Section: Discussionmentioning

confidence: 99%

Effect of Charcoal Filter on the Emergence from Sevoflurane Anesthesia in a Semi-Closed Rebreathing Circuit

Chang

Choi

et al. 2011

Yonsei Med J

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show abstract

“…Activated charcoal adsorbs very little nitrous oxide (Hawkins 1973) and this is a disadvantage of the activated charcoal system when nitrous oxide is used as the carrier gas. There are circumstances where halothane in oxygen or air are preferred such as pneumoencephalography and middle ear surgery in children and it is in these circumstances that the full benefits of the use of activated charcoal will be derived.…”

Section: Discussionmentioning

confidence: 99%

Adsorption of Halothane from a Paediatric T-Piece Circuit by Activated Charcoal

Alexander

Stewart

Oppenheim

et al. 1977

Anaesth Intensive Care

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“…5 The uptake at penetration was between 50 and 60 g halothane. This adsorber has now been used clinically in eleven sessions and shows no detectable loss of efficiency after twenty-two autoclave cycles.…”

Section: Methodsmentioning

confidence: 99%

Caudal block for post‐operative pain relief in children

1974

Anaesthesia

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Atmospheric pollution in operating theatres

Cited by 11 publications

References 37 publications

Effect of Charcoal Filter on the Emergence from Sevoflurane Anesthesia in a Semi-Closed Rebreathing Circuit

Effect of Charcoal Filter on the Emergence from Sevoflurane Anesthesia in a Semi-Closed Rebreathing Circuit

Adsorption of Halothane from a Paediatric T-Piece Circuit by Activated Charcoal

Caudal block for post‐operative pain relief in children

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