NEW YORK -- Officials promise to make changes at the psychiatric ward at Kings County Hospital in Brooklyn after workers ignored a dying woman on the floor.

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It happened two weeks ago. Surveillance video showed Esmin Green falling from her chair and writhing on the floor, while workers failed to help for more than an hour.

Green, a 49-year-old psychiatric patient, had been involuntarily committed the previous morning to the psychiatric unit, suffering from agitation and psychosis, and had waited nearly 24 hours for a bed.

After she fell to the floor at 5:32 a.m. on June 19, Green laid unattended before a nurse kicked her to see if she would respond, reported New York television station WNBC.

During that time, two hospital security guards apparently saw her but didn't do anything to help. The first walked by, and the second didn't rise from his chair, rolling it around a corner to stare at the body, then rolling away a few moments later. He rose about 10 minutes later.

The tape shows a doctor walking by as well. He apparently looked at the woman but kept going.

The Brooklyn woman died on the floor, but not right away. The tape showed that she moved her legs and even rolled to her side, trying to get up.

The New York City Health and Hospitals Corp., which runs the hospital, said six people have been fired as a result of the incident, including the doctor, the nurse and the two security guards shown on the tape.

HHC's president said everyone is "shocked and distressed" by the situation and promises a thorough investigation.

An HHC spokeswoman said the agency has also increased staff and training and agreed to monitor psychiatric patients every 15 minutes.

"It's an emergency room. It's not a bus terminal," said Attorney Robert Cohen, of Kirkland & Ellis. "People who are in desperate need of services, care and attention come here to be treated and to get better. They don't come here to die alone."

New York Mayor Michael Bloomberg said he was disgusted by the tape.