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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.7
- 수록면
- 20 - 28 (9page)
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초록· 키워드
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Background: Computational fluid dynamics (CFD) has been used to compute nitrous oxide (N₂O) levels within a room during the administration of an equimolar mix of N₂O/oxygen (EMONO) in the clinical setting. This study modelled realistic scenarios of EMONO usage in hospital or primary care, in order to estimate the potential N₂O exposure of healthcare professionals (HCP) with routine EMONO use and to provide guidance for EMONO users.
Methods: Sixteen scenarios were defined by carrying out a survey of practitioners. CFD simulations were performed for each scenario and N₂O concentrations over time were calculated. N₂O exposures (time-weighted average of concentration over 8 h [TWA-8 h]) were calculated at the HCPs’ mouth to be compared with a predefined occupational exposure limit (OEL).
Results: Administration duration and ventilation type were the main factors influencing N₂O levels; ventilation type also influenced wash-out time between EMONO administrations. N₂O concentration showed a plume distribution towards the ceiling and was highly heterogeneous, highlighting the importance of measurement location. Although estimated TWA-8 h varied widely, 13 of the 16 scenarios had an N₂O TWA-8 h of ＜100 parts per million.
Conclusions: Data demonstrate that EMONO usage in well ventilated rooms – as recommended – helps to ensure that N₂O exposure does not exceed the OEL and does not signal any major risks for HCPs when recommendations are followed. Although these data are numerical simulations and should be considered as such, they can provide guidance for EMONO users.
Methods: Sixteen scenarios were defined by carrying out a survey of practitioners. CFD simulations were performed for each scenario and N₂O concentrations over time were calculated. N₂O exposures (time-weighted average of concentration over 8 h [TWA-8 h]) were calculated at the HCPs’ mouth to be compared with a predefined occupational exposure limit (OEL).
Results: Administration duration and ventilation type were the main factors influencing N₂O levels; ventilation type also influenced wash-out time between EMONO administrations. N₂O concentration showed a plume distribution towards the ceiling and was highly heterogeneous, highlighting the importance of measurement location. Although estimated TWA-8 h varied widely, 13 of the 16 scenarios had an N₂O TWA-8 h of ＜100 parts per million.
Conclusions: Data demonstrate that EMONO usage in well ventilated rooms – as recommended – helps to ensure that N₂O exposure does not exceed the OEL and does not signal any major risks for HCPs when recommendations are followed. Although these data are numerical simulations and should be considered as such, they can provide guidance for EMONO users.
목차
Abstract
Background
Methods
Results
Discussion
Conclusion
References
참고문헌 (35)
참고문헌 신청
Air Liquide Healthcare / Equanox: Summary of Product Characteristics
Air Liquide Healthcare / Kalinox 50 %/50% medicinal gas, compressed:Summary of Product Characteristics
Howard WR / 1997 / Nitrous oxide in the dental environment : assessing the risk, reducing the exposure / J Am Dent Assoc 128(3):356~360
Krajewski W / 2007 / Occupational exposure to nitrous oxide-The role of scavenging and ventilation systems in reducing the exposure level in operating rooms / Int J Hyg Environ Health 210:133~138
Clark MS / 2008 / Handbook of nitrous oxide and oxygen sedation / Elsevier
Air Liquide Healthcare / Kalinox 50 %/50% medicinal gas, compressed:Summary of Product Characteristics
Howard WR / 1997 / Nitrous oxide in the dental environment : assessing the risk, reducing the exposure / J Am Dent Assoc 128(3):356~360
Krajewski W / 2007 / Occupational exposure to nitrous oxide-The role of scavenging and ventilation systems in reducing the exposure level in operating rooms / Int J Hyg Environ Health 210:133~138
Clark MS / 2008 / Handbook of nitrous oxide and oxygen sedation / Elsevier
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UCI(KEPA) : I410-ECN-0101-2017-517-001005442