Mark DeRosa experienced irregular heartbeat while at the Cubs spring training faciltiy. He never lost consciousness. And he has been taken to a hospital.
http://ap.google.com/article/ALeqM5hAj8Y2wd2p7DChOtsp76Ph_JlxUwD8V08CN80
http://blogs.chicagosports.chicagotribune.com/sports_hardball/2008/02/derosa-update-m.html
http://ap.google.com/article/ALeqM5hAj8Y2wd2p7DChOtsp76Ph_JlxUwD8V08CN80
http://blogs.chicagosports.chicagotribune.com/sports_hardball/2008/02/derosa-update-m.html