1.   Underlying structural cardiac abnormalities, most commonly obstructive coronary disease, are present in the vast majority of patients.

2.   In addition, the drug almost always makes patients sick with such symptoms as low blood pressure, kidney and lung problems, cardiac abnormalities and fluid retention.

3.   When autopsies were performed, all were found free of any cardiac abnormality.

4.   Yankees bench coach Don Zimmer was admitted to Columbia Presbyterian Medical Center on Thursday night for neck pain and evaluation of a minor cardiac abnormality.