At the age of 19, she was discovered by George Burns in Las Vegas. She appeared on The Jack Benny Show, and was soon in the movies with Pocketful of Miracles. Her first important role came in 1963 with Bye, Bye Birdie, a musical about a rock star who is drafted into the army (hmmm...).
The enzyme level continues to rise for the first 18 to 24 hours after a heart attack and slowly returns to normal after a few days. If creatine kinase is elevated, a more specific test (troponin) can help confirm the presence of a heart attack.
What does the test result mean? CK-MB is normally undetectable or very low in the blood. If CK-MB is elevated and the ratio of CK-MB to total CK (relative index) is more than 2.5â3, it is likely that the heart was damaged. A high CK with a relative index below this value suggests that skeletal muscles were damaged.