10 June, 2012
02 June, 2012
غبار الاسمنت و كفاءة الرئة
تأثير غبار الأسمنت في وظائف الرئة
التأثيرات السلبية
لغبار الاسمنت على كفاءة الجهاز التنفسي قوية و شديدة مما يستدعي الإحساس بالشفقة
على صحة من يقطن ساكناً بجوار مثل هذا الغبار الضار..
غبار الاسمنت مزعج و
يحوي مادة الكروم التي تتسبب وحدها في حساسية الصدر و هياج الشعب الهوائية و الخلل
الوظيفي للمسارات الهوائية..
مثل هؤلاء المرضى أو
قاطني المناطق المجاورة يحتاجون للتقييم و المتابعة و ربما لتلقي وقائيات..
و نرجو أن يأتي يوم
قريب حيث يتم فيه النقل النهائي لهذه المصانع في مناطق بعيدة عن العمرانيات أو
انتقال السكان إلى مناطق بعيدة عن هذا الغبار الشرس..
Effect of cement dust on
lung function
Occupational Asthma
Cement dust is very alkaline and irritant, and also
usually contains chromate in a form that can cause sensitization (unless iron
is added as in Scandinavia). It sounds as if your patient has developed
irritant induced asthma (sometimes called reactive airways dysfunction
syndrome). The criteria for this include being normal before the exposure , having an acute exposure , having airflow
obstruction whose onset is within 24 hours of the acute exposure , and having symptoms and bronchial
hyper-responsiveness which persist for more than 3 months. It is not very usual
to get worse 2 months later, however. Irritant induced asthma can be caused by
many overwhelming exposures, it does not lead to sensitization, and the
affected individual is left with asthma which does not deteriorate with
subsequent low dose exposure, so the usual job can usually continue. There are
a few individuals who develop allergic occupational asthma from cement dust,
usually thought to be due to the chromate. Acute exposures can occasionally
lead to subsequent sensitization, in which case subsequent low dose exposures
can cause deterioration in the asthma and removal from further exposure is
warranted. The problem with cement dust is that some workplaces have quite high
exposures, there is some literature implicating cement dust as a cause of
occupational COPD. I would have thought that any form of acute silicosis was
very unlikely, but would welcome others views.
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