KISSIMMEE, Fla. -

A jury found an Osceola man guilty on two counts of first-degree murder and one count of attempted first-degree murder.

Kevin Satterfield was on trial for the murder of his wife and his pregnant daughter's boyfriend, as well as shooting his daughter, who survived with her baby.

Also Thursday evening, Circuit Judge Scott Polodna sentenced Satterfield to three life terms in prison without parole.

Satterfield, who was lying in a hospital bed inside the courtroom, testified in his trial on Thursday. Satterfield told jurors he blacked out the night he murdered his wife and future son-in-law and claimed diabetes was to blame.

Prosecutors argued that Satterfield beat his disabled wife, Vicki, with a wooden bed knob before shooting her to death in her bed. Authorities said Satterfield then shot his pregnant daughter, Heather, when she walked into her mother's room. His daughter survived, and her baby was delivered a month early.

Satterfield also shot and killed his daughter's boyfriend, Christian Martinez, trial evidence showed. Satterfield told the jury he intentionally shot Martinez but never intended to kill his wife and injure his pregnant daughter.

"I was trying to shoot him a second time and apparently I hit Heather, which was a total accident," Satterfield said on the stand. "I shot Christian, he ran for the bathroom, and Heather was a complete accident."

When asked the cause of the shooting, Satterfield replied, "I've asked myself that every night for the last six months. I have no idea why I did that."

U.S. marshals arrested Satterfield in Louisiana at a Super 8 Motel. He had a gun, bloody clothes and about $4,000 in cash and gift cards, officials said. The corrections officers that brought in Satterfield said his blood sugar levels were extremely high.

On Thursday, a pathologist testified Satterfield's blood sugar level was five times above normal after his arrest and that blood sugar levels affect consciousness.

"Certainly you have mental status changes where the person doesn't remember things, confusion, delirium..." said Dr. William Anderson. "As the brain is getting more and more injured, ultimately you get to the point of they go into coma."

On cross-examination, Anderson said there wasn't enough evidence to confirm that Satterfield blacked out and that his actions were the result of his diabetes. A psychiatrist that testified for the state also said there was no indication that Satterfield suffered temporary insanity because he knowingly fled the state trying to hide from authorities.

The jury started deliberating Thursday night.

Watch Local 6 for more on this story.