Bobbi Kristina Brown has undergone a tracheotomy.

Doctors at Emory University Hospital in Atlanta performed what they call the "normal procedure" on the 21-year-old to rearrange her breathing tube.

The daughter of Bobby Brown and the late Whitney Houston was found floating face-down in the bathtub of her home in Roswell, Georgia on January 31 and there has been little change in her condition ever since.

"The tracheotomy is a different place for the tube to go. Everything else remains the same. It's a waiting game. The family is hoping and waiting," a source close to the family told People magazine.

According to the insider, the procedure does not indicate there has been any change in Bobbi Kristina's status. She was placed in a medically induced coma upon hospitalisation and family members have revealed there has been little to no change in her condition in the past two weeks.

"It's a normal procedure to have the tracheotomy because if you have a breathing tube down there for a long time, it can cause an infection," the source explained. "She is still critical and we don't know what the outcome will be. No-one is giving up on this kid."

Bobbi Kristina's father and grandmother, Cissy Houston, are maintaining a bedside vigil at her bedside. However, another family source told People that the tracheotomy has reminded her loved ones just how critical her condition still is.

"There's a medical reason behind [the tracheotomy], but it's making things clear to everyone how serious this is. Even if she wakes up, there's a possibility that this could do some damage to her vocal chords, I hear," the source explained.

"This is happening because there are no other options. If there was another way, Bobby would do it."

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