ORANGE CITY, Fla. -- A 41-year-old woman was knocked unconscious and then trampled by a mob of shoppers who continued to step over her as she suffered a seizure during a Friday sale at Wal-Mart in Orange City, Fla., according to Local 6 News.

Authorities said that Patricia Van Lester arrived at Wal-Mart at 3 a.m. for an early sale on a DVD player for her mother. When the store's doors opened at 6 a.m., Van Lester grabbed the DVD player but was quickly overcome by hundreds of shoppers rushing into the store.

The woman was knocked to the ground, slammed her head on the ground and suffered at least one seizure, according to Local 6 News.

Her sister watched the incident and tried to stop the crowd as they made their way to the merchandise.

"I screamed, 'Stop, don't step on her, my sister is on the ground,' and nobody would listen," the woman's sister, Linda Ellzey said. "I've never seen so many people in a store at one time -- in one area. If there was a fire, nobody could've gotten out of there."

When Orange City and EVAC paramedics got to the store they found Van Lester lying on her left side on top of the DVD player, surrounded by shoppers seemingly oblivious to the unconscious woman, said Mark O'Keefe, a spokesman for EVAC Ambulance.

Van Lester was airlifted to Halifax Medical Center in Daytona Beach. Ellzey said her sister will likely remain hospitalized for days.

Ellzey said Wal-Mart officials called to ask about her sister, and the store apologized and offered to put a DVD player on hold for her.

Wal-Mart Stores spokeswoman Karen Burk said she had never heard of a such a melee during a sale.

"We are very disappointed this happened," Burk said. "We want her to come back as a shopper."

Watch Local 6 News for more on this story.