HIGHLAND, IL (KTVI)-- Patrick Hartmann loves his little sister Marcella.
"My favorite part about her is she likes to read books with me," says 9-year-old hero Patrick Hartmann.
But the morning of January 8th, Marcella had a seizure.
Her parents though she was choking.
"She bit down on my finger really hard, not realizing that she was having a seizure," says Roger Hartmann, Marcella`s Father. "It was just the scariest thing I've ever been through; I've never been through anything like that."
Mom Kelly called 911 and sprang into action.
"As soon as I heard someone was on their way I hung up," says Kelly Hartmann. "I didn't stay on the line and I came back in and started to do CPR, we laid her out on the living room floor."
"And I'm like, I'm going to go wait in the kitchen for the ambulance," says Patrick. "So I was waiting there and then the phone rang and I was like, I'm just going to answer that."
Patrick remained perfectly calm, talking to the 911 dispatcher and giving updates on Marcella.
Meanwhile, Kelly, a teacher, was putting her recent CPR training to use for the first time.
"I'm so glad I knew what to do," says Kelly Hartmann. "I just never thought it would be on my own child."
Doctors believe Marcella had a tonic-clonic seizure.
And this family is thankful for CPR classes and calm demeanors to keep them close.
"The reason I was calm was that I knew that something good was going to happen," says Patrick. "I was just hoping that it would and it was. And I'm like, just calm down Patrick. I know something good is going to happen and it did. She's okay."
"So you saved the day?" asks Patrick Clark.
"Yup I did," says the younger Patrick.
"That wraps up the story," says Clark. "Patrick Clark, and Patrick Hartmann, Fox 2 News."