Comment: A few years ago, the player Anthony Van Loo was given an internal defibrillator due to heart problems. After some time he was even allowed to return to the sport. During a recent game, he suffered a heart attack and the defibrillator worked. At the 14th second, you can see how it all distorted from the electric shock. The guy was taken for examination to the hospital and released the next day. ')
If it were not for the device, he could hardly have saved his life.