FISIOPATOLOGIA RINOFARINGITIS PDF

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Occupational and environmental exposure to arsenic. Bibliographical update for research. Augusto V. Se excreta por orina, heces y piel.

Arsenic is a metalloid present in ores containing copper and causes a severe occupational disease. The main occupational exposure occurs in copper metallurgy. It enters the human body by the respiratory, digestive and skin tracts. It is transformed into dimethylarsinic and methylarsonic acids that are excreted by urine, feces or skin.

Its trivalent compounds are cumulative and might cause cancer in several organs. Arsenic binds with a covalent link to mercapto sulfur groups and it uncouples oxidative phosphorylation, suggesting a non-hydrolytic inhibitory action in mitochondria.

Some fish and shellfish contain high amounts of organic arsenic. The threshold level value in work environment is 0. Arsine is the most toxic arsenical compound. Endemic regional hydroarsenicism is an environmental disease caused by water arsenic contents in some regions.

Keywords: Arsenic, occupational and environmental exposure, toxicology, treatment, bibliography. Siempre se le descubre como impureza de otros metales, cobre, plomo, cinc u oro y es raro hallarlo puro en la naturaleza. Se le conoce desde antiguo. En el siglo XIX y hasta c. En el siglo pasado. Los peces marinos contienen hasta 90 ppm, los de agua dulce 20 o Ictericia, hepatomegalia, cirrosis, incremento de las transaminasas, hemangioendotelioma 3,32, Acrocianosis, acrodermatitis atrofiante Su vida media aproximada es de 4 h.

Se usa en lugares donde no se dispone de otros quelantes 71, Piel: dermatitis, melanosis, queratosis. Sistema cardiovascular: indicar EKG. Se debe hacer al finalizar la jornada laboral semanal y previa higiene personal.

Hemograma: anemia, leucopenia y trombocitopenia. Cuando los indicadores vuelvan a los valores permisibles, recomendar retorno a su labor y mantener vigilancia estricta de las condiciones de trabajo As ambiental.

En laboratorio, alteraciones del hemograma y las plaquetas. Verificar hepatograma. Si el trabajador retorna a su labor habitual, realizar control mensual y luego cada 3 meses. En laboratorio alteraciones significativas del hemograma y de plaquetas. Recomendar al trabajador higiene personal estricta que incluya recorte de cabello. Los afectados viven principalmente en poblaciones rurales dispersas o periurbanas. El doctor A. Con el tiempo, las lesiones se agrietan y se tornan dolorosas hasta la incapacidad y llegan a malignizarse.

El nombre lo da la apariencia obscura de los pies del paciente. Es evidente que en el balance final la naturaleza restablece el equilibrio entre bioceno y biotopo. Casarett and Doull's Essentials of Toxicology2th ed. McGraw- Hill; Richards IS. Principles and Practice of Toxicology in Public Health. MA: Jones and Bartlett Publishers. Zenz C, Ed. Occupational medicine. Principles and practical applications. Chicago: Mosby.

Baltimore: Williams Wilkins. Adams P. Hunter's diseases of occupations. Oxford University Press; Agricola G.

De Re Metallica, Basel; Frost DV. Arsenicals in biology: retrospect and prospect. Fed Proc. Hutchinson J. Vilensky JA, Redman K. British anti-lewisite Dimercaprol : an amazing history. Ann Emerg Med Mar. Acute toxicities of arsenical herbicides. Clin Toxicol. Risks health on assessment of arsenic. J Nutr. Occupational and environmental risks in and around a smelter in northern Sweden. Lasngerkvist BJ, Zetterlund B. Assessment of exposure to arsenic among smelter workers: a five year follow up.

Am J Ind Med. Grosz AE. A preliminary geochemical map for arsenic in superficial materials of Canada and the USA. Applied Geochemistry. Rossman T. En: Rom W. Environmental and Occupational Medicine. Lauwerys R. Arsenic: Exposure and Health. Exposure to inorganic arsenic from fish and shellfish. Arsenic Exposure and Health Effects. Amsterdam: Elsevier.

Arsenic in seaweed- Forms, concentration and dietary exposure. Food Chem Toxicol. USA Gov. Accedido Oct El Comercio. Accedido nov Secretaria Ambiente y Desarrollo sustentable.

Ministerio de Salud. Accedido Nov. Gorby MS. Arsenic poisoning. West J Med. Bleecker M. Toxic peripheral neuropathy. En: Rom W and Markowitz S, eds. Environmental and Occupational Medicine, 4th Ed. Rhabdomyolysis in fatal arsenic trioxide poisoning.

Arsenic and peripheral blood count in workers exposed to urban stressors. Clin Ter.

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Paulin, F. Rinofaringitis infantiles. Practice guidelines for the diagnosis and management of. Arch Pediatr Adolesc Med ; Group A beta-hemolytic streptococcal pharyngitis in children younger than 5 years. In vitro activities of DX and comparison quinolones against gram-positive cocci. Group A streptococcal infections of the skin and pharynx first of two parts.

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