LANCASTER — A YouTube video posted online Thursday night by agitators armed with cameras alleging mistreatment of an Antelope Valley Hospital patient was “based on a fabricated situation,” hospital officials said.

The video purported a woman had been left by hospital staff on the pavement in the parking lot by the emergency room. The video did not show any such action, but did depict a woman writhing on the pavement in apparent distress while the videographers urged viewers to call the hospital in a profanity-laced rant and belligerently engaged with hospital security.

“Antelope Valley Hospital is committed to providing exceptional care to every one of the 220,000 patients we see each year,” hospital officials said in a statement released Friday. “The hospital has conducted an investigation into the accusations made by two local YouTube activists claiming mistreatment of a patient. The content of their video is both misleading and based on a fabricated situation, and we are working with local law enforcement on the legal implications of it.”

Antelope Valley Hospital officials said the woman had entered the emergency room Thursday night and was combative. She was treated and discharged as per policy, with staff bringing her out in a wheelchair.

Due to privacy regulations, no information was available as to her ailment or medical treatment.

The video shows hospital staff arriving in the parking lot with a gurney and bringing the woman back into the emergency department.

Los Angeles County Sheriff’s Department deputies were called by hospital officials and responded.

Calls left by the Antelope Valley Press for the watch commander at the Lancaster Station were not returned by press time.