The prevalence of renal dysfunction in patients with coronary heart disease, coronary artery bypass surgery

Relevance. Despite the successes achieved in the treatment of coronary heart disease through the use of high-tech surgical methods of treatment, including coronary bypass surgery, the evaluation of the postoperative course of the disease, the search for facts affecting the progression of early and late cardiovascular complications remain relevant. Identifying early predictors of adverse outcomes is a critical task. The presence of renal dysfunction in the postoperative period after coronary artery bypass surgery is an important factor leading to a deterioration of the cardiorenal relationship. Purpose of the study. To assess the prevalence of renal dysfunction among patients with coronary heart disease in the postoperative period after coronary artery bypass surgery in conjunction with other cardiovascular risk factors.Актуальность. Несмотря на успехи, достигнутые в печении ишемической болезни сердца благодаря использованию высокотехнологичных хирургических методов лечения, в том числе коронарного шунтирования, актуальными остаются вопросы оценки поспеоперационного течения заболевания, поиск фактов, влияющих на прогрессирование ранних и поздних сердечно-сосудистых осложнений. Выявление ранних предикторов неблагоприятных исходов является важнейшей задачей. Наличие дисфункции почек в послеоперационном периоде после коронарного шунтирования явпяется важным фактором, приводящим к ухудшению кардиоренальных взаимоотношений. Цель исследования. Оценить распространенность дисфункции почек среди больных ишемической болезнью сердца в послеоперационном периоде после коронарного шунтирования во взаимосвязи с другими факторами сердечно-сосудистого риска

New kinetic model for the rapid step of calcium oxide carbonation by carbon dioxide

International audienceCarbonation of solid calcium oxide by gaseous carbon dioxide was monitored by thermogravimetry (TG). A kinetic model of CaO carbonation is proposed in order to interpret the first rapid step of the reaction. By taking into account the existence of large induction period as well as the sigmoidal shape of the kinetic curves in this kinetic-controlled region, a surface nucleation and isotropic growth kinetic model based on a single nucleus per particle is proposed and the expressions of the fractional conversion and the reaction rate versus time are detailed. The induction period is found to have a linear variation with respect to temperature and to follow a power law with respect to CO2 partial pressure. The areic reactivity of growth decreases with temperature increase, and increases with CO2 partial pressure increase. A mechanism of CaCO3 growth is proposed to account for these results and to determine a dependence of the areic reactivity of growth on the temperature and the CO2 partial pressure

Policy options in a worst case climate change world

Climate policy, Geoengineering, Governance, Extreme climate change, Mitigation,