Odom, 35, is breathing with the help of a ventilator as his ex Khloé Kardashian remains by his side, according to a source close to the family.
“It’s hard for Khloé. He is on his last leg,” the source tells PEOPLE.
The source says Odom, who was found unconscious at a Nevada brothel on Tuesday, has been on life support since arriving at Sunrise Hospital in Las Vegas. The source says Odom’s condition has not improved in the days since.
“Everyone wanted to hope for the best, but nothing has changed. Now they are preparing for the worst,” the source says.
Khloé Kardashian filed for divorce from Odom in 2013 after four years of marriage. Both signed divorce papers in July, but they are still legally married since a judgment has not yet been entered in court. That has left her in charge of Odom’s medical care.
“Khloé has always loved him,” the source says. “And that has never changed and if he didn’t have issues, they would be together. She’s devastated.”
• Reporting by LIZ MCNEIL