Abstract |
A case is reported of a patient with episodes of bronchospasm requiring hospital admission after handling sodium bisulfite on the job. The patient had a 15-year history of bronchial asthma and concomitant rhinoconjunctivitis and a 6-year history of asthma induced by moderate exercise. His family history included a father with sensitization to mites. Skin tests, measurement of specific IgI, and nasal provocation were positive for domestic dust mites and grass pollen. Skin tests for sodium metasulfite at a concentration of 10 mg/ml were negative. A simple blind oral provocation test of sodium metasulfite (1, 5, 20, and 50 mg) in acid medium was positive at the 50-mg dose, eliciting bronchial and nasal symptoms, and a decrease in CVF, FEV1, and PEF of more than 20% over baseline values. The episode of bronchospasm has not recurred in the workplace since exposure to sodium bisulfite was eliminated. Oral provocation with metasulfite in acid medium is considered a good technique for confirming the diagnosis of these cases.
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Authors | A L Valero, M Bescos, P Amat, A Malet |
Journal | Allergologia et immunopathologia
(Allergol Immunopathol (Madr))
1993 Nov-Dec
Vol. 21
Issue 6
Pg. 221-4
ISSN: 0301-0546 [Print] Singapore |
Vernacular Title | Asma bronquial por exposición laboral a sulfitos. |
PMID | 8160569
(Publication Type: Case Reports, English Abstract, Journal Article)
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Chemical References |
- Allergens
- Sulfites
- sodium metabisulfite
- sodium bisulfite
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Topics |
- Adult
- Allergens
(immunology)
- Animals
- Asthma
(chemically induced, diagnosis)
- Bronchial Spasm
(chemically induced)
- Commerce
- Humans
- Male
- Mites
(immunology)
- Occupational Exposure
- Pollen
(immunology)
- Respiratory Function Tests
- Single-Blind Method
- Sulfites
(adverse effects, immunology)
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