Neurologists have
warned that Michael Schumacher now seems unlikely to make a full
recovery after spending nearly two months in a drug-induced coma.
The 45-year-old Schumacher fell while skiing in France and hit the right side of his head on a rock, cracking his helmet.
Doctors operated to remove blood clots from his brain, but some were left because they were too deeply embedded.
The seven-time Formula One champion's condition stabilised after he was placed in the coma.
Late last month, doctors began the process of withdrawing sedatives to try to wake him up.
His agent, Sabine Kehm, said in an email today that 'Michael is still in the wake-up phase' and that 'this phase can be long.'
Schumacher's family has released few details of his condition to protect his privacy.
'It
does not bode well,' said Dr. Tipu Aziz, professor of neurosurgery at
Oxford University who is not connected to Schumacher's care.
'The fact that he hasn't woken up implies that the injury has been extremely severe and that a full recovery is improbable.'
Patients who have had major head
injuries are sometimes put in a drug-induced coma to give the brain a
chance to heal; a coma reduces the need for blood flow and may help the
swelling go down.
Aziz said doctors typically try every few days to bring someone out of a coma.
'If
you don't start getting any positive signs, that becomes very
worrisome,' he said, adding that Schumacher's doctors are probably doing
regular brain scans to look for signs of activity - though such signs
may be difficult to detect if he is still being sedated.
Other experts said it was premature to make an accurate prognosis.
'About 90 percent of the recovery is made within nine to 12 months, so this is still early days,' said Dr.
Anthony
Strong, an emeritus chair in neurosurgery at King's College London.
'The longer someone is in a coma, the worse their recovery tends to be.'
'MRI scans can show
any secondary deterioration in the brain structure,' said Dr. Colin
Shieff, a neurosurgeon at the National Hospital for Neurology and
Neurosurgery in London and a trustee for Headway, a British brain injury
charity.
He said
other parts of Schumacher's brain that weren't directly affected by the
accident might now be starting to show worrying signs that may not have
been visible before.
Shieff
said that if Schumacher does eventually come out of the coma, he
probably would face significant disabilities because of the length of
time he has already spent comatose.
While
there have been rare instances of people emerging from comas months and
years later with the ability to communicate, Shieff was doubtful that
would be the case with Schumacher.
He
said the cases where comatose people made a surprising recovery had
mostly suffered things like poisoning, strokes or failed resuscitation
attempts.
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