The purpose of this study is to evaluate occupational risk factors for nurses and CNAs by analyzing the Florida workers' compensation claims database. Risk factors for the cause of injury, nature of injury, body part injured, and demographic and lifestyle factors were evaluated for a sample of CNAs, nurses, and restaurant servers. The results identified falls, lifting, being struck, and pushing and pulling as major causes for injury among nurses and CNAs as compared to servers. Regarding the nature of injury, sprains and strains constituted the majority of claims for nurses and CNAS with the lower back being the body part most commonly injured in a claim. The results of this study indicate that nurses and CNAs are at far greater risk for physical injury than injury or illness from chemical or biological exposures. It is recommended that emphasis must be placed on interventions for musculoskeletal injuries such as falls and lifting, taking into account environmental factors such as age and lifestyle factors that further exacerbate risk for injury.
Arsenic is a known toxic chemical, has immuno-modulatory properties, and can change the susceptibility of infection in humans. Acute hepatitis E is an infectious disease; it can be self-limiting, but in severe cases, can cause acute-on-chronic liver failure. The presence of IgG anti-HEV (hepatitis E IgG antibody) in blood represents a past hepatitis E infection in an individual. Very few studies have investigated the association between arsenic levels and hepatitis E seroconversion in humans. The primary objective of this study was to assess the relationship between total urinary arsenic and speciated urinary arsenic (urinary arsenous acid, urinary arsenic acid, urinary arsenobetaine, urinary arsenocholine, urinary dimethylarsinic acid, urinary monomethylarsonic acid) and the presence of IgG anti-HEV.
Calcining processes including handling and storage of raw petroleum coke may result in Particulate Matter (PM) and gaseous emissions. Concerns have been raised over the potential association between particulate and aerosol pollution and adverse respiratory health effects including decrements in lung function. This risk characterization evaluated the exposure concentrations of ambient air pollutants including PM10 and gaseous pollutants from a petroleum coke calciner facility. The ambient air pollutant levels were collected through monitors installed at multiple locations in the vicinity of the facility. The measured and modeled particulate levels in ambient air from the calciner facility were compared to standards protective of public health. The results indicated that exposure levels were, on occasions at sites farther from the facility, higher than the public health limit of 150 μg/m(3) 24-h average for PM10. However, the carbon fraction demonstrated that the contribution from the calciner facility was de minimis. Exposure levels of the modeled SO2, CO, NOx and PM10 concentrations were also below public health air quality standards. These results demonstrate that emissions from calcining processes involving petroleum coke, at facilities that are well controlled, are below regulatory standards and are not expected to produce a public health risk.
Coronary stenting in acute coronary syndromes probably increases the risk of acute stent thrombosis. Recently, use of platelet glycoprotein IIb/IIIa receptor antibody has been shown to improve percutaneous transluminal coronary angioplasty (PTCA) outcomes in high risk lesions. The purpose of this analysis was to determine safety and efficacy of platelet glycoprotein IIb/IIIa receptor antibody administration in patients receiving coronary stents in high‐risk lesions. Between October 1995 and November 1996, 282 patients with acute ischemic syndromes received coronary stents at our center: 73 had thrombus containing lesions—40 presented with AMI and 33 with unstable angina and make up the study population. The mean age of these patients was 61 ± 13 years, 56 were male, 35 had a history of myocardial infarctions (MI), 21 had prior coronary artery bypass graft (CABG), and 21 had prior PTCA. Coronary stenting was used for suboptimal result in 46 patients (63%), threatened closure in 25 patients (34%), and acute closure in 2 patients (3%). Platelet glycoprotein IIb/IIIa receptor antibody was administered during the procedure in 74% and after the procedure in 26%. A total of 115 stents were deployed (Gianturco‐Roubin 80, Palmaz‐Schatz 29, and Wallstent 6) in 24 LAD, 21 RCA, 15 LCX, and 13 saphenous vein graft (SVG) lesions. Procedural success was 100%. The mean diameter stenosis before and after intervention was 60% ± 31% and 4% ± 14%, respectively. In‐hospital events included 1 Q‐wave MI (1.4%), 13 non–Q‐wave MI (18%), and 1 death (1.4%). There was no subacute stent thrombosis, emergency CABG, or repeat PTCA. Significant in‐hospital bleeding complications were noted in seven (10%) patients, with five patients (6.8%) requiring blood transfusions. In this series of patients with acute ischemic syndromes associated with angiographic evidence of thrombus, combined use of platelet glycoprotein IIb/IIIa receptor antibody and stenting resulted in a very low incidence of subacute stent thrombosis and emergency target lesion revascularization. However, bleeding complications were higher than expected with conventional antiplatelet therapy following routine stenting. Cathet. Cardiovasc. Intervent. 46:415–420, 1999. © 1999 Wiley‐Liss, Inc.
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