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 can affect the right or left side of your heart, or both at the same time. It can be either an acute (short-term) or chronic (ongoing) condition. In acute heart failure, the symptoms appear suddenly but go away fairly quickly. This condition often occurs after a heart attack.