More details about the woman in a vegetative state who gave birth while in an Arizona healthcare facility have been revealed.

Records obtained from Maricopa Country Superior Court state the 29-year-old has been at the facility since she was a toddler.

PEOPLE reports that the documents state she has been at the Hacienda HealthCare facility for more than 27 years, nearly double the length of time that appeared in previous reports.

The patient, who has been identified as a 29-year-old Native American woman, has been under the care of the facility since she was between the ages of two or three according to the documents.

New details about the woman in a coma who gave birth have been revealed in court documents from 2009. (AAP)

The documents also reveal that the woman suffers from quadriplegia, recurrent pneumonia and a seizure disorder.

"She lacks sufficient understanding and mental capacity to make decisions or give consents for her medical, placement or financial estate," read the court documents.

PEOPLE reports they date back to 2009 from an order that transferred guardianship of the woman from her biological father to her mother.

In recent days police have addressed the media to give more information about the sexual assault investigation currently underway, after they were alerted to the birth.

Documents revealed that the woman received a medical exam nearly nine months before giving birth.

The woman's mother, who is currently her legal guardian, submitted an annual report as required by state law that included the results of a physical that was conducted on April 16 at the facility.

The doctor who examined her found "no change" in her health, according to the form, and wrote that the exam was external only.

Police have revealed how authorities were alerted to the birth. (AAP)

RELATED: Families of patients demand answers following woman in vegetative state giving birth

Police said it appears that none of the facility's staff members knew about the pregnancy until the December 29 birth, a notion that has drawn scepticism.

Sergeant Tommy Thompson revealed authorities were alerted to the birth on December 29.

On the same day the baby boy was born, police responded to a call that an infant had "coded" and was in "distress" while having trouble breathing.

"The baby was born having issues, that was the nature of the call, that’s what started this on the 29th of December," Thompson told media at the conference on Wednesday local time.

As far as authorities know, the birth was natural and the baby has been taken into care by the family of the woman.