1.   A defibrillator can analyze the heart rhythm of a cardiac arrest victim and administer an electric shock.

2.   ...abnormal heart rhythms and high anxiety levels.

3.   It creates many short circuits, and that causes crazy heart rhythms.

4.   An electronic voice lets the operator know that a shock is necessary when the system detects a specific irregular heart rhythm.

5.   Anger can narrow the coronary arteries just when the heart muscle needs extra blood, and even inhibit certain nerve signals that help maintain normal heart rhythms.

6.   Atherosclerosis is believed to be the underlying cause of heart attacks, and it can lead to abnormal heart rhythms and sudden death.

7.   Berne was known for his research into the role that the chemical adenosine played in controlling the blood flow to the heart and regulating heart rhythms.

8.   Beta blockers were not recommended for people with heart failure in the past, but recent studies have suggested that they also may help, by stabilizing heart rhythm.

9.   Bill Bradley Friday disclosed that he had experienced another erratic heart rhythm this week, his fifth episode since he sought medical care in December for an abnormal rhythm.

10.   -- GERMAN RESEARCHERS claim to have demonstrated the safety of a new device for identifying the source of abnormal heart rhythms.