Prime Minister Ariel Sharon remained in critical but stable condition on Thursday, more than two weeks after he suffered a massive stroke, Hadassah Hospital spokesman Ron Krumer said.
Sharon remains in a coma from the January 4 stroke.
The hospital said on Wednesday that Sharon underwent successful surgery to replace his breathing tube because of what was termed a "technical problem."
The 77-year-old Israeli leader, who has been on a respirator, underwent a tracheotomy Sunday. He has been taken off anesthetics that kept him in a medically induced coma, but has yet to awaken.
Outside experts said his failure to regain consciousness in recent days bodes poorly for his recovery.
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