Left ventricular assist device (LVAD) is being used increasingly in recent years for end stage heart failure as a bridge to transplant (BTT) and also as a destination therapy (DT). Patients with end stage heart failur...Left ventricular assist device (LVAD) is being used increasingly in recent years for end stage heart failure as a bridge to transplant (BTT) and also as a destination therapy (DT). Patients with end stage heart failure have some degree of elevated pulmonary capillary wedge pressure, causing right ventricular hypertrophy which in due course leads to decreased dilatation of the RV and fall in cardiac output & severe tricuspid regurgitation (TR) presenting with features of RV failure (RVF). Implantation of LVAD improves left heart function at the cost of right ventricular output with an incidence of 25%-30%. RVF may lead to impaired LVAD flow, difficulty in weaning from cardio-pulmonary bypass (CPB), decreased tissue perfusion and multi-organ failure. In this article we comprehended the pathophysiology leading to RVF post LVAD implantation and its preoperative predictors and the various treatment modalities for managing RVF post LVAD implantation.展开更多
In this paper,a new infinite-dimensional necklace Lie algebra is studied and the left and right index arrays of a necklace word in necklace Lie algebra is first defined.Using the left and right index arrays,we divide ...In this paper,a new infinite-dimensional necklace Lie algebra is studied and the left and right index arrays of a necklace word in necklace Lie algebra is first defined.Using the left and right index arrays,we divide the necklace words into 5 classes.We discuss finite-dimensional Lie subalgebras of necklace Lie algebras intensively and prove that some subalgebras are isomorphism to simple Lie algebra sl(n).展开更多
This paper argues that the comparative assessment of the market liberalism-dirigisme in different economies should be done based on some specific forms of the government regulation,which are called the model-shaping f...This paper argues that the comparative assessment of the market liberalism-dirigisme in different economies should be done based on some specific forms of the government regulation,which are called the model-shaping forms of government intervention in the economy.For its measurement a composite indicator,called the Index of Leftness(Rightness)of Economy,is introduced.IL(R)E is calculated for 62 countries as a weighted average of six sub-indices.Then,IL(R)E(both the Index in general and each of its sub-indices)is used to identify the dependence of economic growth rates on governments’model-shaping interference in the economy.Cross-country regression analysis shows that an increase in model-shaping government intervention in the economy(indicated by IL(R)E’s change towards one)has a negative impact on economic growth,but different forms of that intervention(measured by individual sub-indices)have different impact.Besides,there is a rather profound difference between the countries with GDP per capita less and more than 30 thousand International dollars.In the second group of countries the impact is less significant.In conclusion the authors hypothesize that the process of moving the economy to the right has a more positive impact on the economic growth than its static(unchanging)proximity to the right pole.展开更多
文摘Left ventricular assist device (LVAD) is being used increasingly in recent years for end stage heart failure as a bridge to transplant (BTT) and also as a destination therapy (DT). Patients with end stage heart failure have some degree of elevated pulmonary capillary wedge pressure, causing right ventricular hypertrophy which in due course leads to decreased dilatation of the RV and fall in cardiac output & severe tricuspid regurgitation (TR) presenting with features of RV failure (RVF). Implantation of LVAD improves left heart function at the cost of right ventricular output with an incidence of 25%-30%. RVF may lead to impaired LVAD flow, difficulty in weaning from cardio-pulmonary bypass (CPB), decreased tissue perfusion and multi-organ failure. In this article we comprehended the pathophysiology leading to RVF post LVAD implantation and its preoperative predictors and the various treatment modalities for managing RVF post LVAD implantation.
文摘In this paper,a new infinite-dimensional necklace Lie algebra is studied and the left and right index arrays of a necklace word in necklace Lie algebra is first defined.Using the left and right index arrays,we divide the necklace words into 5 classes.We discuss finite-dimensional Lie subalgebras of necklace Lie algebras intensively and prove that some subalgebras are isomorphism to simple Lie algebra sl(n).
文摘This paper argues that the comparative assessment of the market liberalism-dirigisme in different economies should be done based on some specific forms of the government regulation,which are called the model-shaping forms of government intervention in the economy.For its measurement a composite indicator,called the Index of Leftness(Rightness)of Economy,is introduced.IL(R)E is calculated for 62 countries as a weighted average of six sub-indices.Then,IL(R)E(both the Index in general and each of its sub-indices)is used to identify the dependence of economic growth rates on governments’model-shaping interference in the economy.Cross-country regression analysis shows that an increase in model-shaping government intervention in the economy(indicated by IL(R)E’s change towards one)has a negative impact on economic growth,but different forms of that intervention(measured by individual sub-indices)have different impact.Besides,there is a rather profound difference between the countries with GDP per capita less and more than 30 thousand International dollars.In the second group of countries the impact is less significant.In conclusion the authors hypothesize that the process of moving the economy to the right has a more positive impact on the economic growth than its static(unchanging)proximity to the right pole.
