Toni Braxton, who is a spokeswoman for the American Heart Association, was admitted to the hospital last night after suffering from chest pains during her Las Vegas show. Braxton found out that she had pericarditis during her last pregnancy.

R+B star Toni Braxton has been admitted to a hospital in Las Vegas. The “Unbreak My Heart” singer was taken to St. Rose Dominican Hospital on Monday night after her show at the Flamingo Hotel and Casino, where she has been performing since 2006.

The full details surrounding Braxton’s hospital visit are currently unclear, but she is known to suffer from the heart condition pericarditis, where the sack surrounding the heart becomes inflamed. She is said to be in good condition, according to local news station Fox 5.

Braxton is due to return to the Las Vegas stage on Wednesday (09Apr08), but whether or not that show has been cancelled as a result of her new health problem has yet to be revealed.

[From Contact Music]

Wikipedia says pericarditis symptoms generally present as “Chest pain, radiating to the back and relieved by sitting up forward and worsened by lying down, is the classical presentation. Other symptoms of pericarditis may include dry cough, fever, fatigue and anxiety. Pericarditis can be misdiagnosed as myocardial infarction (heart attack), and vice versa.” There’s a wide variety of causes, ranging from a viral or bacterial infection to Lupus to a heart attack. It sounds like Toni pulled through her whole show, which is amazing. Hopefully Braxton will be okay and make a quick recovery.

Here’s Toni Braxton performing at the House of Blues in Chicago on 3/22/2006. Images thanks to WENN.