Swim great Thorpe in intensive care - report
Ian Thorpe of Australia swims in the men's 100m butterfly preliminary session at the FINA Swimming World Cup short-course meet in Tokyo on November 13, 2011 - by Kazuhiro Nogi
The 31-year-old five-time Olympic gold medallist fell ill after undergoing the surgeries at a hospital near his home in the Swiss town of Ronco sopra Ascona, said the Australian Associated Press (AAP) news agency.
"It's serious but it's not life-threatening," Thorpe's manager James Erskine told AAP. "He's quite sick but that's the situation."
Erskine dismissed reports that the swimmer could lose the use of his arm but said it was unlikely Thorpe would swim competitively again.
"From a competitive point of view - he will not be swimming competitively again I don't think," he said.
Thorpe is Australia's most decorated Olympian with five gold medals at the 2000 Sydney and 2004 Athens Games, with his success attributed partly to his abnormally large feet and hands.
He became the first person to win six gold medals at one world championships, in 2001, among 11 world titles overall -- along with 10 Commonwealth Games gold medals.
But the demands of a celebrity lifestyle and grinding training saw him quit in 2006 before a failed comeback attempt to qualify for the 2012 London Olympics.