The selective nature of the drug makes it preferable to other stress agents such as adenosine, which are less selective and therefore cause more side-effects. Regadenoson was approved by the United States Food and Drug Administration on April 10, 2008 and is marketed by Astellas Pharma under the tradename Lexiscan.
Human capital flight, sometimes called brain drain, refers to the emigration of intelligent, well-educated individuals for better pay or conditions, causing their places of origin to lose skilled people, or brains..
Drain the swamp originally means to get rid of the malaria-carrying mosquitoes by draining the swamp. Figuratively, drain the swamp means to exterminate something that is harmful or anything that most of the people hate such as corruption or government waste. This term is especially attractive for politicians during campaign.