In order to assess the cement dust levels at the factory of the Beninese Cement Industry (BCI), at Xwlacodji, seven sampling stations (numbered 1 to 7) were set inside the industry and nine (numbered 8 to 16) were set...In order to assess the cement dust levels at the factory of the Beninese Cement Industry (BCI), at Xwlacodji, seven sampling stations (numbered 1 to 7) were set inside the industry and nine (numbered 8 to 16) were set around the factory in January, February, August and December. With the method of stainless steel plate according to NFX 43-007 AFNOR Standard, the different stations were monitored daily for dust collection all month long. The results revealed that the mean values of cement dusts inside BCI in g/m2/day ranged from 1.608 to 8.752 in January, from 1.13068 to 6.14924 in February, from 0.9654 to 5.2502 for August and from 1.7220 to 9.3620 for December. With regard to outside BCI, the mean values of dusts rose from 8.8760 to 18.9620 in December. The lowest mean values 3.2719 and 4.4124 were respectively recorded in February and August whereas the highest values 17.7309 and 18.9620 were respectively recorded in January and December. Our study revealed month variation in cement dust deposition with the highest values in December and January and the lowest values in February and August. It was observed that the content in cement dusts recorded outside the cement industry were extremely higher than those recorded inside the cement industry. The values in the present study have far exceeded all the international safety values (1 g/m2/day for AFNOR and 350 mg/m2/day TA-Luft) and could pose health hazards. Therefore protective measures are suggested to mitigate the risk of occupational hazards for the cement industrial workers.展开更多
Introduction: Congenital heart disease is a major cause of children’s death. In Niger, despite the frequency of these pathologies, very few studies have been carried out on associated mortality in a paediatric enviro...Introduction: Congenital heart disease is a major cause of children’s death. In Niger, despite the frequency of these pathologies, very few studies have been carried out on associated mortality in a paediatric environment. The objective of this work was to look for the risk factors of children with congenital heart disease’s death in Niamey. Patients and Method: It is about a cross-sectional study for descriptive and analytical purposes in children aged from 0 to 15 years. Carriers of congenital heart disease followed from January 2016 to July 2021 in two national hospitals in Niamey. The variable depends and the main ante was the occurrence of deaths (yes or no). The explanatory variables were related to the characteristics of the patients, the type of heart disease and management among others. Chi’s tests2 Pearson’s or Fischer’s exact test were used (P Results: During the period of the research, 514 cases of congenital heart disease were studied, including 132 deaths (25.68%). The average age of patients was 14.64 months [10 days - 15 years]. The sex ratio was 1.08. The most common reason for consultation was respiratory distress that was found in 74.90% of patients. Interventricular communication (IVC) and intear communication (CIA) were the most found type of heart disease with 36.53% and 20.44% of cases respectively. Only 9.54% of patients (n = 48) had received surgical management. The risk factors associated with mortality were pulmonary arterial hypertension (54.17%), pulmonary disease (44.55%) and the presence of anemia (63.16%) [OR > 1;p Conclusion: Congenital heart diseases remain an important cause of death among children in Niger. The pulmonary arterial hypertension and the associated comorbidities such as broncho-pulmonary diseases were the main associated factors. In the meantime, an optimal technical management of these factors will help to reduce this mortality.展开更多
文摘In order to assess the cement dust levels at the factory of the Beninese Cement Industry (BCI), at Xwlacodji, seven sampling stations (numbered 1 to 7) were set inside the industry and nine (numbered 8 to 16) were set around the factory in January, February, August and December. With the method of stainless steel plate according to NFX 43-007 AFNOR Standard, the different stations were monitored daily for dust collection all month long. The results revealed that the mean values of cement dusts inside BCI in g/m2/day ranged from 1.608 to 8.752 in January, from 1.13068 to 6.14924 in February, from 0.9654 to 5.2502 for August and from 1.7220 to 9.3620 for December. With regard to outside BCI, the mean values of dusts rose from 8.8760 to 18.9620 in December. The lowest mean values 3.2719 and 4.4124 were respectively recorded in February and August whereas the highest values 17.7309 and 18.9620 were respectively recorded in January and December. Our study revealed month variation in cement dust deposition with the highest values in December and January and the lowest values in February and August. It was observed that the content in cement dusts recorded outside the cement industry were extremely higher than those recorded inside the cement industry. The values in the present study have far exceeded all the international safety values (1 g/m2/day for AFNOR and 350 mg/m2/day TA-Luft) and could pose health hazards. Therefore protective measures are suggested to mitigate the risk of occupational hazards for the cement industrial workers.
文摘Introduction: Congenital heart disease is a major cause of children’s death. In Niger, despite the frequency of these pathologies, very few studies have been carried out on associated mortality in a paediatric environment. The objective of this work was to look for the risk factors of children with congenital heart disease’s death in Niamey. Patients and Method: It is about a cross-sectional study for descriptive and analytical purposes in children aged from 0 to 15 years. Carriers of congenital heart disease followed from January 2016 to July 2021 in two national hospitals in Niamey. The variable depends and the main ante was the occurrence of deaths (yes or no). The explanatory variables were related to the characteristics of the patients, the type of heart disease and management among others. Chi’s tests2 Pearson’s or Fischer’s exact test were used (P Results: During the period of the research, 514 cases of congenital heart disease were studied, including 132 deaths (25.68%). The average age of patients was 14.64 months [10 days - 15 years]. The sex ratio was 1.08. The most common reason for consultation was respiratory distress that was found in 74.90% of patients. Interventricular communication (IVC) and intear communication (CIA) were the most found type of heart disease with 36.53% and 20.44% of cases respectively. Only 9.54% of patients (n = 48) had received surgical management. The risk factors associated with mortality were pulmonary arterial hypertension (54.17%), pulmonary disease (44.55%) and the presence of anemia (63.16%) [OR > 1;p Conclusion: Congenital heart diseases remain an important cause of death among children in Niger. The pulmonary arterial hypertension and the associated comorbidities such as broncho-pulmonary diseases were the main associated factors. In the meantime, an optimal technical management of these factors will help to reduce this mortality.
