Occupational Asthma Reference

Gannon PFG, Bright P, Campbell M, O'Hickey SP, Burge PS, Occupational asthma due to glutaraldehyde and formaldehyde in endoscopy and X-ray departments, Thorax, 1995;50:156-159,

Keywords: asthma, glutaraldehyde, formaldehyde, xray, oa, ch, nurse, radiographer, secretary, heathcare worker, am

Known Authors

Sherwood Burge, Oasys Sherwood Burge

Paul Gannon, Dupont Paul Gannon

Phil Bright, Oasys Phil Bright

Steve O'Hickey, Worcester Hospital Steve O'Hickey

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Glutaraldehyde is the best disinfectant for fibreoptic endoscopes. It is also used in the processing of x ray films. A number of studies have reported eye, nose, and respiratory symptoms in exposed workers. Three individual case reports of occupational asthma in endoscopy workers and a radiographer have also been published. We describe a further seven cases of occupational asthma due to glutaraldehyde in endoscopy and x ray departments, together with exposure levels measured during the challenge tests and in 19 endoscopy and x ray departments in the region.

Eight workers were referred for investigation of suspected occupational asthma following direct or indirect exposure to glutaraldehyde at work. They were investigated by serial measurements of peak expiratory flow (PEF) and specific bronchial provocation tests. Glutaraldehyde levels were measured using personal and static short and longer term air samples during the challenge tests and in 13 endoscopy units and six x ray darkrooms in the region where concern about glutaraldehyde exposure had been expressed. Three of the workers investigated with occupational asthma came from departments where glutaraldehyde air measurements had been made; the others came from other hospitals or departments.

The diagnosis of occupational asthma was confirmed in seven workers, all of whom had PEF records suggestive of occupational asthma and positive specific bronchial challenge tests to glutaraldehyde. Bronchial provocation testing was negative in one worker who was no longer exposed and who had a less clearcut history of occupational asthma. Three workers also had a positive specific bronchial challenge to formaldehyde. The mean level of glutaraldehyde in air during the challenge tests was 0.068 mg/m3, about one tenth of the short term occupational exposure standard of 0.7 mg/m3. The levels obtained in the challenge chamber were similar to those measured in 13 endoscopy suites and six x ray darkrooms where median short term levels were 0.16 mg/m3 during decantation in endoscopy suites and < 0.009 mg/m3 in darkrooms.

Glutaraldehyde can cause occupational asthma. The exposure levels measured in the workplace suggest that sensitisation may occur at levels below the current occupational exposure standard.

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15 yrs ago I was an endoscopy nurse, working with gluteraldehyde on a daily basis, I now have severe asthma. Can I or should I go back to my employer for compensation?

It all depends on whether the glutaraldehyde caused your asathma and which compensation scheme you work in. In the UK you have to make a claim within 3 years of your "date of knowlege", the date on which you could reasionably have been expected to know that the glutaraldehyde was the cause of your asthma. It is likely that any claim now is much too late (statute barred).
Just because you were exposed to glutaraldehde and now have asthma it doesnt mean that the glutaraldehyde was the cause of your asthma. This is difficult to prove 15 years ago, but a documented history of no prior asthma, of a latent period between glutaraldehyde exposure and the onset of asthma, followed by documented deterioration with exposure and improvement away from exposure, might be enough to get compensation from the industrial injuries scheme from the DWP, although it would not be retrospective to 15 years.

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