on 10/2/07 1:10 pm, Kevin Smith at [log in to unmask] wrote:
> Some basic science:
>
> On the whole it is cooler at night.
> Cooler air contracts.
> There is more oxygen in moles per litre in the contracted cooler air. (this
> is the principle used to give more power to diesel engines by use of an
> intercooler)
> He will get more oxygen per breath at the same volume and therefore the same
> muscular effort.
> Energy comes from respiration which requires oxygen. Therefore he has more
> energy at night.
> The body has huge physiological reserves and such tiny changes would be
> imperceptible to the conscious mind.
> Asbestos plaques are not associated with breathlessness in the absence of
> other disease.
> If he has Asbestosis, this would limit his lung volume, getting extra oxygen
> in the same volume should help.
> He is wrong.
>
>
>
> Dr Kevin RH Smith MSc MB ChB FRCS AFOM DTM&H
> WellWork Ltd
>
> www.wellwork.co.uk
>
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> -----Original Message-----
> From: [log in to unmask] [mailto:[log in to unmask]] On Behalf
> Of Susan Clarke
> Sent: 09 February 2007 16:21
> To: [log in to unmask]
> Subject: [OCC-HEALTH] Asbestos and shift work
>
> Hello all!
> can anyone help? I have a client employee with Asbestos Pleural plaques
> diagnosed from his work with asbestos in 1970's. The current company has
> just changed to a new shift system....one week earlies 6am-2pm and one week
> lates 2:30 - 11pm.
> Employee is overcome with exhaustion and breathlessness due " to the air
> pressure dropping at night and reduced oxygen in night air". He states that
> this is well documented. So, he has requested "fixed" early shifts. I have
> written to GP for Specialist reports from his records and for further
> info.Have also contacted EMAS who are researching this too.
> Can anyone help? Is this condition exacerbated in this way for these
> reasons?
>
> Many thanks.
>
>
> Regards,
>
>
> Sue
>
> Susan Clarke BSc(Hons)
> Occupational Health Specialist
>
> Ock Health Ltd
> 15 Wick Close
> Abingdon
> OX14 2NQ
>
> Tel: +44 (0) 870 6091443
> Mob: +44 (0) 7801 009676
> email: [log in to unmask]
> www.ockhealth.com
>
>
Dear Kevin and list
Kevin - this is a very useful (and simplified) explanation of one of the
law's of gasses. Dredging the remnants of what I remember from the science
degree I completed prior to my nurse training it looks like it is a
practical application of Henry's law but may be I have got that wrong. All
my Chemistry, Physics and Biology textbooks were sent for recycling (too
many) years ago.
This scenario demonstrates how clients may try to pull the wool over our
eyes and underlines the importance of keeping an open mind, peppered with a
healthy degree of scepticism, with a reliance on evidence based OH practice.
Anne Harriss
Course Director
Occupational Health Nursing programmes & MSc Occupational Health and Safety
London South Bank University
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