As you probably now know, Rush was admitted to a Honolulu, Hawaii, hospital Wednesday after experiencing chest pains. AP is reporting today that these pains were "similar to a heart attack," and remains hospitalized. Yesterday's guest host, Walter Williams, reported Rush would be undergoing a complete examination and doctors should know more once they get the results.
In related news, the online info site Wikipedia actually reported that Rush had passed away. Rest assured, Rush is very much alive and Wikipedia quickly corrected its error.