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Sudden Death in Athletes May Sometimes Be Prevented

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May 1, 2000 -- When an athlete dies on the court or field, it usually turns out that the player had a heart disorder that had gone undetected. But if a doctor or coach knows what to look for, some common medical tests may be enough to cut a potentially fatal problem off at the pass.

"The major causes of sudden death are mostly concealed cardiovascular diseases that are very difficult to diagnose during life," Cristina Basso, MD, PhD, tells WebMD.

So Basso and her colleagues at the University of Padua Medical School in Italy, along with researchers from the Minneapolis Heart Institute Foundation in Minnesota, studied two registries of information from the U.S. and Italy about hundreds of young athletes who died suddenly during or after intense exertion. Their hope was "to see if there were some signs during life to be able to predict this event," Basso says.

Most sudden deaths are caused by a thickened, enlarged heart or by a condition that disturbs the rhythm of the heart. A third condition occurs when a coronary artery grows on the wrong side of the heart. All the conditions are rare, and all are far from obvious.

This study, published in the Journal of the American College of Cardiology, focused on the third condition -- known as a coronary artery anomaly -- because it so often evades diagnosis in the medical screenings that young athletes undergo before playing competitive sports.

Among the registries, the researchers identified 27 competitive athletes between the ages of 9 and 32 whom autopsies found to have died because their coronary arteries were on the wrong side of their hearts. Of the 27 athletes, six were from Italy.

Most of the athletes were competing at the junior high or high school level; three were professional, one was collegiate. Fifteen showed no previous signs of problems and had undergone no cardiovascular testing. The remaining 12 had undergone cardiovascular tests, including electrocardiograms (EKG) and exercise stress tests. The test results were all normal.

But records indicated that 10 of the athletes previously had experienced chest pains (angina) or dizziness or loss of consciousness (syncope). "We found that sometimes there is the opportunity to suspect, at least, that there's a malformation because some of these athletes had symptoms like chest pain or syncope, particularly during effort," Basso tells WebMD.

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