Respiratory health among professionals exposed to extreme SO2 levels from a volcanic eruption.
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Authors
Carlsen, Hanne KrageAspelund, Thor
Briem, Haraldur
Gislason, Thorarinn
Jóhannsson, Thorsteinn
Valdimarsdóttir, Unnur
Gudnason, Thorolfur
Issue Date
2019-05-01
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Respiratory health among professionals exposed to extreme SO2 levels from a volcanic eruption. 2019, 45(3):312-315 Scand J Work Environ HealthAbstract
Objective The Holuhraun eruption of fall and winter 2014-15 produced large amounts of sulfur dioxide (SO 2). The aim of this study was to determine if exposure to extreme SO 2levels affected the health of individuals working at the eruption site. Methods During January‒March 2015, earth scientists, technicians, and law enforcement personnel who were about to work at the eruption site were invited to a respiratory health examination. Symptom reports and lung function measures, forced expiratory volume in one second (FEV 1) and forced vital capacity (FVC) were collected before and after an eruption site visit. Those with previous exposure (N=27) reported symptoms retrospectively. Results Altogether, 41 individuals were invited to participate, 32 underwent a clinical examination at a hospital respiratory health clinic (baseline); 27 reported symptoms during earlier visits to the eruption site (retrospective symptom reports), 17 were re-examined 1-6 days after visiting the eruption site (follow-up). All participants' lung function was within normal range both before and after exposure. At baseline, average FEV 1was 107.4% of predicted versus 106.6 at follow-up (P =0.82); average FVC was 107.0% of predicted at baseline versus 107.4% at follow-up (P=0.35). Eye and nasal irritation were more frequently reported during eruption site exposure by 24% versus 6% (P =0.37) for both. Conclusion Although "healthy-worker" effects cannot be excluded, our data indicate that SO 2exposure was associated with relatively mild and transient respiratory symptoms with no clinical signs of airway inflammation or airway obstruction.Description
To access publisher's full text version of this article click on the hyperlink belowAdditional Links
http://www.sjweh.fi/show_abstract.php?abstract_id=3783ae974a485f413a2113503eed53cd6c53
10.5271/sjweh.3783
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