9 research outputs found
Minimally invasive and full sternotomy in aortic valve replacement: a comparative early operative outcomes
Introduction: aortic valve replacement is usually performed through a median full sternotomy (MFS) in our department. Minimally invasive aortic valve replacement (MIAVR) has been recently adopted as a new approach. According to the literature, the superiority of MIAVR is controversial. In this study we report early post-operative outcomes in MIAVR compared with MFS access with reference to blood Loss, wound infections, post-operative recovery, morbidity and mortality.
Methods: this study was a prospective data collection from 36 consecutive patients undergoing isolated valve replacement. Two population study was identified, MIAVR group (group I n=18) and MFS group (group II n=18). Patients´ data were collected and analyzed using IBM SPSS statistics 21 software and Khi2 test has been used to compare the variables. The study variables are presented as numbers, percentage, median with interquartile range. Pre-operative planning was performed so that to obtain similar characteristics.
Results: in group I, upper mini-sternotomy was used in 12 patients and right mini-thoracotomy in 6 patients. There was no difference in term of mortality and morbidity. MIAVR was associated with longer CPB time (93.25 (58-161) vs 131 (75-215) mins, P=0.047) with no significant difference in term of ACC time (81 (33-162) vs 58.8 (59-102) mins P=0.158). MIAVR´ Patients had likely lower incidence of red blood cells transfusion (16.7 vs 52.3%) without significant difference about post-operative haemoglobin (P = 0,330). Patients in group I had shorter ventilation time (2.35 (1-12) vs 9.3 (1-48) hours P < 0.01), shorter ICU stay (2.44 (1-8) vs 4.25 (1-9) days, P = 0,024). The length of hospital stay was shorter, 6.5 (5-9) days in group I vs 7.4 (6-11), P=0.0274. Length of chest tube stay was shorter in group I (mean 1.53 vs 2.4 days, P=0,033). Wound infections were not found in both groups.
Conclusion: minimally invasive aortic valve replacement is associated with less blood loss, faster post-operative recovery faster post-operative recovery but increase operation time
Stratégies politiques pour l'agriculture urbaine, rôle et responsabilité des autorités communales : le cas du Mali
Dans IDL-2457
Assessment of carbon dioxide emission factors from power generation in Burkina Faso
Power generation is the second largest source of greenhouse gases (GHGs), particularly carbon dioxide (CO2), in Burkina Faso's energy sector. When preparing the National Communications on Climate Change, Burkina Faso uses the default emission factors of the Intergovernmental Panel on Climate Change (IPCC) to estimate emissions from power generation. This study presents an assessment of CO2 emission factors from power generation for 2018 in Burkina Faso and an assessment of the contribution of renewable energy to the reduction of CO2 emissions. The national electricity company of Burkina Faso was chosen as the scope for this study. The estimation of emission factors for combustion is based on an analysis of fuels which are characterised in terms of molecular composition, density and water content. For CO2, the emission factor is 76 903 kg/TJ for the combustion of Heavy Fuel Oil (HFO) and 73 525 kg/TJ for that of Distillate Diesel Oil (DDO). Using these emission factors, the CO2 emissions attributable to power generation in 2018 were estimated at almost 580 Gg. The CO2 emission factor for thermal power generation was estimated at 0.663 kg/kWh and that of the electricity generation mix at 0.569 kg/kWh. Finally, the use of 14.25% renewable energy in electricity generation avoided 16.7% of CO2 emissions in 2018. The emission factor of electricity production decreases with the increase in the share of renewable energy in the energy mix
Do natural resources, urbanization, and value-adding manufacturing affect environmental quality? Evidence from the top ten manufacturing countries
Gestion intégrée des ressources naturelles en zones inondables tropicales
De par leur richesse en ressources naturelles renouvelables, les zones inondables tropicales revêtent un intérêt social et économique majeur pour les pays en développement. Cependant, les fleuves tropicaux sont aujourd'hui de plus en plus aménagés pour satisfaire les besoins liés à de nouvelles activités. Les zones jusque-là régulièrement inondées par la crue annuelle se réduisent ou alors les rythmes de leur inondation sont profondément modifiés. Les impacts de tels changements sont nombreux et portent atteinte à la biodiversité et à la durabilité des systèmes d'exploitation. Il s'avère alors nécessaire de définir de nouvelles approches de la gestion de l'eau, des espaces et des ressources vivantes, qui tout à la fois préservent les écosystèmes et prennent en considération les besoins des différents usagers. Tel est l'objectif de cet ouvrage qui pose, dans un premier temps, la problématique sociétale autour de laquelle cette gestion doit être repensée, en faisant apparaître la diversité d'acteurs et d'institutions concernés. Il présente ensuite les acquis les plus récents de la recherche sur le fonctionnement de ces écosystèmes ainsi que sur les pratiques et stratégies déployées par les populations qui les exploitent. Enfin est abordée la question des instruments à mettre en place pour assurer l'effectivité d'une gestion durable des zones inondables tropicales : après avoir fait le point sur les apports de la recherche concernant les outils de traitement et de partage de l'information environnementale, l'ouvrage se termine par un débat sur les conditions de création et de fonctionnement des institutions de suivi, de concertation et de décision