An Epistaxis Emergency Associated with Multiple Pollutants in Elementary Students.
Biomed Environ Sci
; 29(12): 893-897, 2016 Dec.
Article
em En
| MEDLINE
| ID: mdl-28081750
ABSTRACT
Emergencies of epistaxis in students caused by environmental pollution have rarely been reported to date. This study aimed to explore the cause of an emergency of epistaxis in elementary students by using a field epidemiological investigation. Twenty-two epistaxis cases from a single school with differences in gender, age, and classroom, were diagnosed within a period of 7 days. The air concentration of chromic acid mist (Cr6+) in the electroplating factory area, new campus, and residential area exceeded the limit of uncontrolled emissions. The emission of HCL and H2SO4 was also observed. Formaldehyde levels in the classrooms exceeded the limits of indoor air quality. Abnormal nasal mucosa was significantly more frequent in the case group (93.3%) and control group 1 (of the same school) (66.7%) than in control group 2 (from a mountainous area with no industrial zone) (34.8%; P < 0.05 and P < 0.01, respectively). On the basis of the pre-existing local nasal mucosal lesions, excessive chromic acid mist in the school's surrounding areas and formaldehyde in the classrooms were considered to have acutely irritated the nasal mucosa, causing epistaxis. Several lessons regarding factory site selection, eradication of chemical emissions, and indoor air quality in newly decorated classrooms, should be learned from this emergency.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Epistaxe
/
Poluição do Ar em Ambientes Fechados
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Poluentes Atmosféricos
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Exposição Ambiental
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
Limite:
Child
/
Female
/
Humans
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Male
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article