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"She was telling her mom not to leave. I remember her mom petting her," said Maribel Robles, who was assisting the dentist during the six-tooth operation to fill cavities and place caps. "She was still crying--moving around and kicking. I remember Dr. (Hicham) Riba said he'd have to give her more if she didn't stop."

The Southwest Side kindergartner slipped into a coma and died four days later. The Cook County medical examiner's office ruled she died of a lack of oxygen caused by anesthesia.

Robles testified at a state-licensing hearing where an administrative judge for the Illinois Department of Financial and Professional Regulation will determine whether Riba can return to his practice.

More details have emerged about what occurred at Little Angel Dental through testimony from Riba, two dental assistants present during the operation, an anesthesia expert and the state investigator.

Defense lawyers have said that Diamond could have had a medical condition that contributed to her death, and that Riba may have made a mathematical error when he administered the sedatives.

Dr. William Flick, an anesthesia specialist, testified Monday that the amount of Valium the girl received was too much for someone weighing 35 pounds and that her vital signs were not properly monitored.

Riba recorded in an anesthesia report that he gave Diamond 17 milligrams of diazepam or Valium, both in pill form and intravenously, between 9 and 10:05 a.m. A patient of Diamond's size should not receive more than 5 milligrams of the drug, Flick said.

The Illinois Dental Practice Act mandates that a patient's blood pressure, pulse, respiration and level of oxygen in the bloodstream be monitored and recorded before, during and after sedation.

Riba and his two dental assistants said the girl's blood pressure was not taken at any point and her pulse and respiration were observed but not recorded on treatment reports. The level of oxygen in her blood was recorded during the procedure, but the machine that displays the reading was removed from Diamond's finger after the operation.

Diamond, still unconscious, was then left alone with a dental assistant who was instructed to pinch the girl's neck every few minutes to try to wake her, the witnesses testified. When the dentist returned 10 minutes later and pinched the girl, her body did not respond. Riba then performed CPR and asked his staff to call 911.

The day of Diamond's operation was Robles' third day at the dental clinic, she said. Robles, a certified nurse assistant, said she had never used a pulse oximeter, which measures a patient's pulse and oxygen level in the blood, before and did not know how to measure a patient's breathing.

The second dental assistant, Zoila Ocampo, who could not identify a stethoscope during the hearing Friday, had no formal medical training beyond a Red Cross CPR class at the clinic. Ocampo testified that she did not take the girl's pulse or check her breathing while they were alone in the operating room after the procedure.

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