Abstract 6: Timing Of Major Adverse Cardiac Events During Endurance Races.
Background: Major adverse cardiac events (MACE) in endurance exercise are usually due to underlying and unsuspected heart disease. We present an analysis of the timing MACE that have occurred in endurance races over the past 6 years.
Methods: We investigated clinical data of athletes who developed MACE during three national endurance races and were admitted to our hospital. Each year, 10 –15 Olympic nominees participate.
Results: In 6 years (2002–2007), a total of 94,000 athletes had participated in three prestigeous cycling or half marathon races. 77% of the participants was male with a mean age of 40 years. In 6 athletes a MACE occurred (males, mean age 48 yrs): One athlete died suddenly despite extensive CPR. Three athletes had a myocardial infarction and underwent primary PCI; one collapsed due to a catecholamine-induced VT/VF and one athlete developed a heat stroke with increased cardiac enzymes. Two athletes were successfully defibrillated at the event’s site with an external defibrillator. All events occurred in the last quarter distance of the race or after the finish. This figure⇓ shows the timing of MACE in endurance races.
Conclusion: the incidence of MACE during endurance races is very low. All MACE’s occurred in last quarter distance of the race or after the finish. A rapid available external defibrillator at the event’s site can be life-saving and may enhance the safety of endurance sport events.