Sen. Johnny Isakson (R-Ga.) was hospitalized Monday for an irregular heartbeat, less than one week after the 65-year-old was treated for a bacterial infection.Isakson was admitted to Piedmont Hospital in Atlanta on Monday night after cardiologist Dr. Charles Brown III issued the latest diagnosis, according to a statement from the Senators office. A second doctor had originally detected the irregular heartbeat when he treated Isaksons bacterial infection last week. Doctors also found a blood clot in Isaksons right calf, which according to spokeswoman Joan Kirchner developed as a result of Isakson being sedentary for the past week while recovering from the bacterial infection.Isakson, currently serving in his first Senate term, is running for re-election this year.
Vice President Joe Biden waits to conduct a mock swearing-in ceremony with Sen. Brian Schatz, D-Hawaii, in the Capitol's Old Senate Chamber, December 2, 2014. Schatz was sworn in to serve the remainder of his term since he was appointed to the seat after Sen. Daniel Inouye, D-Hawaii, passed away.