Doctors warn - Kubica return could be fatal
The Pole, limping only slightly, checked out of hospital on Monday following his frightening high-speed crash in Montreal just 24 hours earlier, vowing to be ready to race at Indianapolis.
But Hamburg-based Dr Bernd Kabelka told Germany's Bild newspaper that Kubica risks death if he sustains another concussion at Indianapolis, which features concrete-lined banking that only a few years ago left Ralf Schumacher unconscious and in hospital.
"Sensory and motor losses are possible, so are memory gaps and visual disturbances," he said.
"In the worst case the brain can swell and the pressure can be fatal.
"I consider it extremely dangerous for Kubica to drive again straight away."
F1's former doctor Professor Sid Watkins, meanwhile, is also quoted as saying that the risk of serious injury with a second concussion is "quite high".
