Vollmer had the symptoms of long Q-T Syndrome, a condition that often leads to heart arrhythmia and sudden cardiac arrest.
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One finding: The type of heart problem that caused cardiac arrest in most of the survivors blood vessels that were too narrow to meet the oxygen demands of the heart during an intense running race can be caught by an exercise stress test.
Doctors say the drug, whose generic name is Propofol, can lead to cardiac arrest when the heart abruptly stops.
"When someone collapses from a cardiac arrest, their heart starts to quiver, and unless immediately shocked, they'll die, " he said.
CNN: Cardiac-arrest victims' parents push for school defibrillators
Cardiac arrest occurs when the heart adopts an irregular rhythm that makes it stop beating.
The big worry in sudden cardiac arrest beyond restarting the heart is protecting the brain.
When an ambulance carrying a patient in full cardiac arrest arrives, Oklahoma Heart's er workers apply ice packs.
Sudden cardiac arrest occurs when the heart unexpectedly stops beating.
"His legs and arms were intact he wasn't blown into a million pieces" but he lost a pulse and was in cardiac arrest, meaning his heart and circulation had stopped, so CPR, or cardio-pulmonary resuscitation, was started.
The new computer simulation allows doctors and physicists to model the faulty heart beats (arrhythmias) that can cause cardiac arrest, and run episodes of arrhythmia time and again, looking for the best way of treating it.
Statistics show more than 200, 000 Americans die of sudden cardiac arrest every year, according to the American Heart Association.
CNN: Cardiac-arrest victims' parents push for school defibrillators
The findings prompted the American Heart Association to include therapeutic hypothermia in 2005 guidelines for treating cardiac-arrest patients outside of a hospital.
WSJ: How Therapeutic Hypothermia Saves Lives of Cardiac Arrest Patients
An estimated 250, 000 people die from sudden cardiac arrest each year in the United States, when the heart unexpectedly stops beating.
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It was the latest high-profile case of a football player collapsing from heart failure on the pitch, coming less than a month after Bolton midfielder Fabrice Muamba suffered cardiac arrest during a game in England.
The surprise of a fire alarm at school triggered the cardiac arrest - her body was unable to cope with the flood of adrenaline due to rare undisguised heart condition.
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