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Two patients with occupational asthma who returned to work with dust respirators


Autor/in:

Obase, Y.; Shimoda, T.; Mitsuta, K. [u. a.]


Herausgeber/in:

k. A.


Quelle:

Occupational and Environmental Medicine, 2000, Volume 57 (Number 1), Seite 62-64, London: BMJ British Publishing Group, ISSN: 1351-0711


Jahr:

2000



Abstract:


Objectives:

To assess the efficacy of dust respirators in preventing asthma attacks in patients with occupational asthma (asthma induced by buckwheat flour or wheat flour).

Methods:

The effect of the work environment was examined in two patients with occupational asthma with and without the use of a commercially available mask or a dust respirator. Pulmonary function tests were performed immediately before and after work and at 1 hourly intervals for 14 hours after returning to the hospital.

Results:

In patient 1, environmental exposure resulted in no symptoms during and immediately after work, but coughing, wheezing, and dyspnoea developed after 6 hours. Peak expiratory flow rate (PEFR) decreased by 44% 7 hours after leaving the work environment, showing only a positive late asthmatic reaction (LAR). In patient 2, environmental exposure resulted in coughing and wheezing 10 minutes after initiation during bread making, and PEFR decreased by 39%. After 7 hours, PEFR decreased by 34%. The environmental provocation tests in both patients were repeated after wearing a commercial respiratory. This resulted in a complete suppression of LAR in patient 1 and of immediate asthmatic reaction (IAR) and LAR in patient 2.

Conclusion:

Two patients with asthma induced by buckwheat flour or wheat flour in whom asthmatic attacks could be prevented with a dust respirator are reported. Dust respirators are effective in preventing asthma attacks induced by buckwheat flour and wheat flour.


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Produkte: Respiratoren




Dokumentart:


Zeitschriftenbeitrag / Forschungsergebnis




Bezugsmöglichkeit:


Occupational and Environmental Medicine
Homepage: https://oem.bmj.com/

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Referenznummer:

R/NV0885


Informationsstand: 27.02.2004
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