The 57-year-old Australian, who is best known as one member of children's entertainment group The Wiggles, said that he cannot wait to get back on stage after having a pacemaker fitted on Friday night.
'Purple Wiggle' Fatt told The Daily Telegraph: "This whole thing could have been so much more serious if I hadn't got it checked out. I'm a typical Aussie guy. I felt unwell but didn't think I needed to see a doctor. I'm a bit sore and tender but otherwise okay."
The star was diagnosed with cardiac arrhythmia after blacking out while driving.
Fatt continued: "I'm just relieved no one else was injured. I'm very thankful to [bandmate] Anthony [Field] and Paul Field for telling me to see someone. It's good to get a message out there.
"Medical things you think might be minor can be more serious than you think, so get them checked out. Jeff Wiggle is certainly well and getting ready to get back on stage. He's fighting fit."
Former Wiggle Greg Page was forced to leave the children's group in 2006 after being diagnosed with orthostatic intolerance, a chronic illness which causes symptoms including fatigue and loss of balance. He said that quitting was a "major life change", but said that he found his "direction" again when he met wife Vanessa.
Page has also experienced financial problems since leaving The Wiggles, which he has said made him feel like a "failure".
Watch The Wiggles perfoming 'Haru Ga Kita', a song of hope dedicated to the people of Japan following the March 2011 earthquake and tsunami, below: