Fainting, Heart Health Link

Doctors believe fainting could be a sign of something more serious.
2:06 | 02/28/12

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Transcript for Fainting, Heart Health Link
If you've ever fainted you may think of it as a brief embarrassment to a fluke or a reason to drink a little more water for dehydration -- tonight. Doctors are waging a national campaign to urge all of us to think of fainting as a window into the health of your heart. ABC's Andrea canning explains. It will happen to an estimated 60% of all Americans these YouTube clip showed just how common fainting can -- His college student collapsed while giving a speech in class wedding. Was upstaged by a painting bridesmaid. Dehydration caused this American Idol contestant. Consciousness earlier this year. The most common cause a sudden drop in blood pressure meaning less oxygen in the brain. Only half of us take -- seriously but doctors say we must because -- 25% of cases painting is a sign of something more serious. Potentially deadly heart conditions Christine breeze -- for years and never sought help I wanna be sick -- I didn't -- He told there was a problem until one day the 47 year old mother of two -- marathon runner passed out at home her sister in law was there. To tell me that -- called 911. And and I said something like like -- and the hospital I got it cooked dinner. Instead she was rushed to the emergency room leader as doctors were running tests Brees went into cardiac arrest my heart actually stopped and the doctor had to resuscitate me. -- was diagnosed with the condition called -- eugenics to compete or an irregular heartbeat. A condition that can be treated if you know you have it the great is that they knew exactly what to do and and that that would be for me to get a pacemaker. That's why doctors say that if you fate even once you need to get tested if somebody. The fans they should immediately get attention. At a hospital. Christine -- is now healthy and speaking out part of an international public awareness campaign to warn others about the dangers of fainting. And think I can be somewhat the heart condition at -- what I learned -- this whole experience tend to take. -- seriously and take myself seriously injury canning ABC news New York.

This transcript has been automatically generated and may not be 100% accurate.

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