A ‘BestBET‘ from the Emergency Medicine Journal examined the evidence for the use of sodium bicarbonate and/or mannitol in the management of rhabdomyolysis.
The clinical bottom line: there is no quality published evidence that alkaline diuresis is a superior treatment to normal saline alone.
Rhabdomyolysis and the use of sodium bicarbonate and/or mannitol
Emerg Med J. 2010 Apr;27(4):305-8
Full Text at the BestBets site