Ventilatory capacity and intradermal skin tests in cotton workers

Kronični respiratorni simptomi, respiratorne bolesti, ventilacijske funkcije i alergijski kožni testovi promatrani su u skupini od 112 radnika zaposlenih u preradi pamuka. Učestalost pojave kroničnih respiratornih simptoma i bolesti bila je veća u eksponiranih nego u radnika kontrolne skupine premda su razlike bile statistički značajne samo za kronični kašalj, katar nosa i bisinozu u žena te za kronični kašalj, kronični iskašljaj i bisinozu u muškaraca. Bisinoza je registrirana u sličnoj prevalenciji u žena (29,4%) i u muškaraca (29,5%). U ispitivanih tekstilnih radnika pretežno se radilo o bisinozi stupnja 1/2 (žene 22,1 %, muškarci 20,5%). Rezultati ventilacijskih testova pokazuju tijekom radne smjene statistički značajne akutne redukcije forsiranog vitalnog kapaciteta (FVK) i forsiranog ekspiratornog volumena u prvoj sekundi (FEV1). U muškaraca su utvrđene nešto niže izmjerene vrijednosti testova u odnosu na normalne očekivane vrijednosti. Mali broj radnika reagirao je na alergen pamuka (eksponirani 8,2%, kontrola 1,8%). Naši rezultati pokazuju da ekspozicija prašini pamuka može dovesti do pojave respiratornih simptoma i bolesti te do akutnih promjena funkcionalnih testova ventilacije, ali bez alergijske reakcije.Ventilatory capacity, chronic respiratory symptoms and respiratory diseases as well as intradermal skin tests were registered in a group of 112 cotton workers. The prevalence of chronic respiratory symptoms and respiratory diseases was higher among the exposed than among control workers although the differences were statistically significant only for chronic cough, nasal catarrh and byssinosis in women and for chronic cough, chronic phlegm and byssinosis in men. A similar prevalence of byssinosis was noted in women (29.4%) and in men (29.5%). Among textile workers mostly byssinosis grade 1/2 was found (women 22.l %, men 20.5%). There were statistically significant acute reductions over work shift for forced vital capacity (FVC) and one-second forced expiratory volume (FEV1). In men the values were somewhat lower than the expected normal values. A very small number of workers demonstrated positive intradermal skin tests to cotton allergen (exposed 8.2%, control 1.8%). Our data indicate that exposure to cotton dust may lead to the development of respiratory symptoms and diseases as well as to acute changes in ventilatory capacity but without an allergic reaction