ABSTRACT
The purpose of the current treatment about the aortic intramural hematoma(IMH)is to prevent aortic rupture or conversion to typical dissection. Due to the different influence of human race,IMH type,severity and progression factors on this disease,the management of IMH remains controversial. Therefore,we reviewed current therapy of Aortic intramural hema-toma(IMH). And we provided a reference for further study on this disease by analyzing and comparing the relatively radical strategies and the close follow-up treatment(wait-and-watch strategy)strategies.
ABSTRACT
<p><b>OBJECTIVE</b>To analyze the urinary cadmium, blood cadmium and urinary beta2-MG of workers in a zinc powder processing plant before and after the cadmium dust control, and to explore the effects of dust control on the prevention and treatment of cadmium hazards.</p><p><b>METHODS</b>The on-site occupational hazard survey was used to investigate the changes of urine cadmium, blood cadmium and beta3-MG of 84 workers exposed to cadmium before and after the treatment by self-control analysis for evaluating the effects of dust control measures in a zinc powder processing plant.</p><p><b>RESULTS</b>After treatment of the cadmium dust, the geometric mean of zinc dust in the workplace significantly decreased from 3.38 mg/m3 to 2.22 mg/m3 (P < 0.01). The geometric mean concentration of blood cadmium [(2.19 +/- 1.19) microg/L] and urine cadmium [(1.96 +/- 0.74) microg/g Cr] before treatment were significantly higher than those of one year [(1.63 +/- 0.83) microg/L] and [(1.25 +/- 0.83) microg/g Cr] and two years [(1.36 +/- 0.95) microg/L] and [(0.94 +/- 0.72) microg/g Cr] after the cadmium dust control (P < 0.01), respectively. The positive correlations analysis between urine cadmium and blood cadmium concentration of one and two years before and after the cadmium dust treatment implied that there was significant difference (r = 0.466, P < 0.01).</p><p><b>CONCLUSION</b>Dust treatment could reduce the impact of low concentration cadmium on the urine cadmium and blood cadmium concentrations of the workers exposed to cadmium, and effectively prevent the cadmium poisoning.</p>