Congestive heart failure caused by severe aortic or mitral regurgitation or, more rarely, by valve obstruction caused by vegetations. Severe acute aortic or mitral regurgitation with ...

Once you have made the decision to have heart valve replacement surgery, you, along with your surgeon, will need to decide what type of replacement valve is best for you. There are several types of ...

The effect of climate on ecosystem C fluxes (gross primary productivity (GPP), ecosystem respiration (ER), and net ecosystem productivity (NEP)) in drylands has been extensively explored, but the ...

Peco et al. (2017) found that the effect of grazing on soil functioning depends on primary productivity. Soil functioning is closely related to the composition and diversity of aboveground vegetation.