When the heart stops, the device provides an electric shock to restart it.

FORBES: Hard Bargain Could Bite J&J Back

Do you want to be resuscitated if your heart stops?

NEWYORKER: Letting Go

In experiments on dogs they have found that by pumping liters of ice-cold salt water into their arteries and cooling them down to 59 degrees they can preserve vital organs up to three hours after the heart stops.

FORBES: How to Cheat Death

Doctors say the drug, whose generic name is Propofol, can lead to cardiac arrest when the heart abruptly stops.

CNN: Jackson memorial ticket Web site flooded with hits

An estimated 250, 000 people die from sudden cardiac arrest each year in the United States, when the heart unexpectedly stops beating.

CNN: Health - Heart experts' advice: Eat more fish in a balanced diet - October 5, 200

Sudden cardiac arrest occurs when the heart unexpectedly stops beating.

WSJ: This Device Saves Lives, But Can Be Hard to Find

The chivito is, essentially, the sound your heart makes when it stops.

BBC: Multicultural Miami

Henric stops, his heart speeds up, he tries to orient himself.

NEWYORKER: Labyrinth

Part of the heart beats so fast that it stops working efficiently as a pump.

BBC: Andrew Marr: Why do healthy people have strokes?