Sampling and Analysis of VVOCs and VOCs in Indoor Air

Mo, Jinhan; Liu, Yingjun

doi:10.1007/978-981-10-5155-5_15-1

Cited by 1 publication

(1 citation statement)

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“…In addition, the PM10 concentrations are also classified into four levels: low (PM10 30 mg m À3 ), moderate (PM10 31 to 80 mg m À3 ), high (PM10 81 to 150 mg m À3 ), and very high (PM10 !151 mg m À3 ). 16 Using the extracted data, we matched the particulate matter concentrations on the day of surgery for each patient.…”

Section: Exposure Variablementioning

confidence: 99%

Atmospheric particulate matter and hypoxaemia in Korean children receiving general anaesthesia

Park,

Kang,

et al. 2024

European Journal of Anaesthesiology

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BACKGROUND The association between the concentration of atmospheric particulate matter on the day of surgery and the occurrence of intra-operative hypoxaemia in children receiving general anaesthesia is unclear. OBJECTIVE To investigate the association between the exposure to of particulate matter on the day of surgery and the occurrence of intra-operative hypoxaemia, defined as a pulse oximetry oxygen saturation of less than 90% for more than 1 min, in children. DESIGN Retrospective study. SETTING Single-centre. PARTICIPANTS Children aged 18 years or younger who received general anaesthesia between January 2019 and October 2020. INTERVENTION Information on daily levels of particulate matter with a diameter 10 μm or less and 2.5 μm or less measured within a neighbourhood corresponding to the area defined by the hospital's zip code was obtained from publicly available air-quality data. MAIN OUTCOME MEASURES The primary outcome was intra-operative hypoxaemia, defined as a pulse oximetry oxygen saturation of less than 90% lasting for more than 1 min, manually verified by anaesthesiologists using vital sign registry data extracted at 2 s intervals. RESULTS Of the patients finally analysed, 3.85% (489/13 175) experienced intra-operative hypoxaemia. Higher levels of particulate matter 10 μm or less in diameter (≥81 μg m−3, 472/12 900, 3.7%) were associated with an increased occurrence of intra-operative hypoxaemia compared with lower particulate matter concentrations [<81 μg m−3, 17/275, 6.2%; adjusted odds ratio, 1.71; 95% confidence interval (CI), 1.04 to 2.83; P = 0.035]. CONCLUSION The level of particulate matter on the day of surgery pose a risk of intra-operative hypoxaemia in children receiving general anaesthesia. If the concentrations of particulate matter 10 μm or less in diameter on the day of surgery are high, children receiving general anaesthesia should be managed with increased caution.

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Section: Exposure Variablementioning

confidence: 99%