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Optimal days working and days off work

I have a office worker that complains from asthma exacerbation during work by the air conditioning. I checked the literature that says peak flow measures must be done 2 week at work and 2 weeks off work but Oasys tutorial does not define the optimal ratio of days working and days off at peak flo ...

Occupational Asthma, Health Professional, 3/11/2019, 3/11/2019,

What is the shortest latency for isocyanates

A patient developed severe allergic asthma within days of exposure to low levels of isocyanates in a foam factory. Re-exposure at the factory caused recurrence within days. He had a marked eosinophillic reaction which recovered He has been left with asthma The exposure did not suggest a RAD ...

Occupational Asthma, Specialist, 11/15/2018, 11/18/2018,

missmatch between entered and on-graph data

Dear Sirs Pef measurements, that are entered in oasys worksheet, do not appear same on the graf and probably in subsequent analysis. I have taken pictures from the interface, but unfortunately there are no place where to attach it. May be you could provide email aadress, where I can send it? ...

Oasys, Specialist, 11/5/2018, 11/6/2018,

Can colophony asthma lead to fragrance reactions?

Last year I was exposed to colophony soldering fumes for about four weeks, and I started coughing daily and eventually had a very difficult time breathing. I sought medical attention and now have been diagnosed with Reactive Airways Disease, Asthma, and a Chemical Sensitivity requiring the offic ...

Occupational Asthma, Specialist, 9/4/2018, 9/4/2018,

Can acute formaldehyde exposure trigger sensitisation to another agent?

I carry our respiratory health surveillance for a poultry hatchery company. One of their workers was acutely exposed to ? formaldehyde in November 2016 enough to prompt an A&E attendance, and subsequently developed respiratory symptoms. Initially these were unrelated to work but at his kast surv ...

Occupational Asthma, Health Professional, 8/18/2018, 8/20/2018,

occupational asthma from chromium

Is it possible to become sensitised (respiratory) to the grindings of a chrome-containing prosthesis; or does the chrome need to be in the form of a hexavalent salt?

Occupational Asthma, Specialist, 8/1/2018, 8/1/2018,

Egg & peanut allergy greater predisposition to allergic alveolitis

My son is to start work in a centre for birds and animals. Birds include a few parakeets, pigeons, chickens. He has peanut allergy (can go into shock), and egg allergy (vomits violently). He is also allergic to shellfish, house dust and pollen. (Mild asthma -has inhalers). On the whole his a ...

Oasys, Health Professional, 8/6/2016, 4/29/2018,

Pine oil

What do you consider the minimum latency to pine oil/colophony exposure in a non asthmatic?

Occupational Asthma, Specialist, 1/11/2018, 4/29/2018,

Natural Gas and Tetrahydrothiophene

I am a respiratory physician I have had a two patients claiming exacerbation of asthma as a result of exposure to natural gas leaks within their working environment. Is there any information about this? Could the odourant Tetrahydrothiophene be responsible as there is nearly nothing on toxic ...

Occupational Asthma, Specialist, 3/11/2018, 3/11/2018,

Ninhdrin as a cause of occupational asthma?

I currently have a patient that I see in clinic who has suspected occupational asthma. Their job involves counting money that has been dusted for fingerprints with ninhydrin (1,2,3-Indantrione hydrate). Peak flow readings are suggestive of occupational asthma, has anyone had a similar case wi ...

Occupational Asthma, Specialist, 10/20/2014, 2/8/2018,