Situación epidemiológica de intoxicación por monóxido de carbono (CO) / Epidemiological situation of carbon monoxide intoxication (CO)

El monóxido de carbono es un gas tóxico, incoloro, inodoro e insípido que se produce durante la quema de combustible. Las intoxicaciones por monóxido de carbono (CO) constituyen causa de enfermedad y muerte. Además del evento agudo, los cuadros de intoxicación graves pueden dejar secuelas cognitivas. La exposición crónica también es importante dado que puede producir sintomatología neurológica y cognitiva. Se presentan diferentes análisis de la serie histórica que va desde 2005 a la Semana Epidemiológica 38 de 2016, de las intoxicaciones por Monóxido de Carbono asistidas en la Ciudad de Buenos Aires. Los datos para la construcción de indicadores del presente informe provienen del registro de casos individuales de intoxicación por CO, en el módulo C2 de Vigilancia Clínica del Sistema Nacional de Vigilancia de la Salud (SNVS)

Intoxicaçäo exógena por formol / Exógen intoxication for formaldehyde

A intoxicaçäo exógena por ingestäo de formol é responsável por distúrbios gastrointestinais decorrentes da irritaçäo e necrose de mucosas. O caso relata paciente do sexo feminino, 55 anos, em quadro depressivo, com história de ingestäo de aproximadamente 100 ml de formol, evoluindo com lesäo ulcerada de mucosa gástrica, com posterior atrofia e estenose. Realizou tratamento clínico e atualmente está em acompanhamento ambulatorial, endoscópico e psicológico.

Long term morbidity in survivors of the 1984 Bhopal gas leak.

BACKGROUND: The extent and nature of long term health sequelae among survivors of the Bhopal gas disaster are not known. In 1994 an International Medical Commission was set up with the aim of assessing respiratory, neurological and other health effects attributable to gas exposure. METHODS: An epidemiological survey of a representative sample of gas-exposed inhabitants of Bhopal was conducted in January 1994; for reference, a group of unexposed persons in the same city were surveyed. Questionnaires regarding health and exposure were administered to 474 persons, and a random sample (n=76) were subjected to respiratory and neurological testing. Responses to the questionnaire and the results of clinical testing were analysed according to a measure of individual gas exposure. RESULTS: A large number of subjects reported general health problems (exposed v. unexposed; 94% v. 52%) and episodes of fever (7.5/year v. 2.5/year); adverse outcome of pregnancy (e.g. still-births, 9% v. 4%) and respiratory symptoms (81% v. 38%), with a strong gradient by exposure category. This was not accounted for by differences in smoking, and was consistent with the results of spirometric testing. Neurological and psychiatric symptoms were reported more frequently by subjects in high exposure categories and the results of neurological examination and testing tended to confirm this finding. Ophthalmic symptoms demonstrated a similar pattern. Although a number of other symptoms were reported (with the possible exception of gastrointestinal disease), there was no clear evidence of other organ system damage attributable to gas exposure. CONCLUSION: The gradient of reported symptoms and clinical test results with estimates of exposure among these survivors of the gas leak suggests that a proportion of their current respiratory and neurological disease was due to gas exposure.

Hipotermia: una indicación no renal para la diálisis peritoneal / Hipothermia: a non renal indication for peritoneal dialysis

Accidental hypothermia, a condition seldomly seen in Chile, is defined as a spontaneous core temperature reduction to less than 35§ C and is associated with great morbidity and mortality. We report a 16 years old female intoxicated with liquefied petroleum gas that was admitted in coma, hypothermic, with severe hemodynamic derangement, lactic acidosis, rhabdomyolysis and iliofemoral phlebothrombosis. Peritoneal dialysis with solutions at 27§ C was used as a quick and safe means to revert hypothermia and avoid its complications

Bronchoalveolar lavage study in victims of toxic gas leak at Bhopal.

Bronchoalveolar lavage using flexible fibreoptic bronchoscope was carried out in 50 patients 1-2 1/2 yr after exposure to the 'toxic gas' at Bhopal. Thirty six patients in the analysis were categorised into 3 groups (viz., mild, moderate and severe), depending upon the severity of exposure. There was an increase in cellularity in the lower respiratory tract (alveolitis) of the severely exposed patients (in both smokers and non-smokers), compared to normals (P less than 0.05). The increase in cellularity in severely exposed non-smokers was due to abnormal accumulation of macrophages (P less than 0.01), and in severely exposed smokers, to macrophages (P less than 0.01) and neutrophils (P less than 0.05). Mild and moderately exposed patients did not show significant change in cellularity in lower respiratory tract, compared to normal individuals (P greater than 0.2). There was a trend towards increasing cellularity, as the severity increased (P less than 0.0001) and higher numbers of total cells were seen in severely exposed smokers, suggesting that smoking is a risk factor. It appears, therefore, that subjects severely exposed to the toxic gas at Bhopal may have a subclinical alveolitis characterised by accumulation and possibly activation of macrophages in the lower respiratory tract. Smokers, who were exposed to the gas had in addition, accumulation of neutrophils.