We're seeing more and more defibrillators, those machines that restart a heart, in more and more places. That includes some local schools, thanks to a generous and personal donation.

We see them in corporations, malls, the YMCA. Using a defibrillator when someone goes into cardiac arrest versus performing CPR and waiting for an ambulance increases their chances of survival by nearly 45 percent, odds that just went up at some local schools.

Kaitlin Grady, now 15, learned of a heart condition four years ago.

She says, "My mom took me to the doctor and they heard my heart beating irregularly when they just did the normal checkups that they usually do."

She was diagnosed with cardiomyopathy, or a weak heart muscle, and those irregularities they found turned out to be arrhythmias, which could be fatal, so her father, Dr. Tim Grady, a cardiologist at the Wausau Heart Institute, decided to donate some defibrillators to the Catholic schools in the area both for his daughter and anybody who might need it.

He says, "More than likely the person that's gonna be using that defibrillator is gonna be some grandparent coming to a function."

Whoever uses it could possibly have their lives saved.

Lt. Mark Krueger of the Wausau Fire Department, says, "It's been proven that it's the most effective way of returning the heart to a profusing rhythm."

There are classes for the defibrillators through the Red Cross and American Heart Association, but they're easy to use with step by step instructions.

And they're written so a sixth grader can use them. The instructions are written clear and easy to help anybody who's under an extreme amount of pressure.

The defibrillators should never be used on a conscious person, but doctors and medics say that if you believe that a person has gone into cardiac arrest but you're worried about the legal ramifications of performing medical attention, you are protected under the Good Samaritan Laws.