Bobbi Kristina Brown has had surgery to replace her breathing tube with a tracheostomy tube.
The surgery comes nearly three weeks after the 21-year-old daughter of the late Whitney Houston was found face-down and unresponsive in a bathtub of her Georgia home.
A person close to the family, who is not authorised to speak on Brown's condition, has told The Associated Press Brown's breathing tube was replaced with a tracheostomy tube.
A tracheostomy, which involves cutting into a patient's neck, is often performed on patients who need to be on a ventilator for an extended period.
Brown's family has said she's "fighting for her life" at Emory University Hospital.
A police investigation is ongoing and few details on her condition have been released.
Bobbi Kristina is the only child of singers Bobby Brown and Houston.
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