Asked about a seizure Griffith Joyner had in St. Louis two years ago, Kersee said she was hospitalized overnight but doctors could find nothing wrong and released her. Jo's case only highlights the fact that SCD is almost impossible to predict with any degree of certainty.
Prodromal symptoms are so non-specific that they are of no value in forecasting a serious event.
This limited data available reveals an increase in the heart electrical rhythm disturbances - ventricular ectopy. The cardiac arrest itself is a highly recognizable, indeed dramatic event. There is an abrupt loss of consciousness, caused by a reduction in blood flow to the brain. Uniformly, death will ensue unless immediate action is taken. However, the potential for successful resuscitation depends upon the setting in which the cardiac arrest occurs the mechanism of the cardiac arrest - rhythm disturbance , mechanical failure etc.