Karst terrane: landscape underlain by soluble bedrock, typically limestone, with a suite of distinctive features such as caves that are related to the solubility of the bedrock. Features that characterize karst terranes: 1  caves, and cavernous development, subsurface drainage.
Left-sided heart failure is a life-threatening condition in which the left side of the heart cannot pump enough blood to the body.eft-sided heart failure is a life-threatening condition in which the left side of the heart cannot pump enough blood to the body.
Heart failure usually affects both sides of the heart. But in some people it affects only one side. When heart failure affects mainly the left side of the heart, the symptoms are more likely to involve breathing difficulties. When mainly the right side is affected, the main symptoms may be leg swelling and abdominal swelling.