11.   Metabolic and electrolyte disorders -- The relation between electrolyte abnormalities and cardiac arrhythmias is well known.

12.   Severe potassium depletion is associated with muscular weakness, cardiac arrhythmias, and renal impairment, but over vigorous replacement poses dangers and potassium is best given orally.

13.   However, the major cause of anxiety is prolongation of the corrected QT interval, since this is thought to predict the onset of serious cardiac arrhythmias.

14.   An irregular heartbeat, or cardiac arrhythmia, causes the heart to quiver and not produce a useful blood flow to the brain and the heart.

15.   He had just taken a Dmitri Mironov slap shot to the chest and went into cardiac arrhythmia.

16.   It was once considered a relatively harmless cardiac arrhythmia, but doctors now know that people with atrial fibrillation have a fivefold greater risk of stroke than others.

17.   Lack of it may play a role in a number of modern maladies, including cardiac arrhythmia, irritable bowel syndrome and rheumatoid arthritis.

18.   Metzger said Friday that Jackson was suffering from potentially serious cardiac arrhythmia, in which an irregular heartbeat impairs blood flow throughout the body.

19.   People with cardiac arrhythmias should consult their doctors about when to use epinephrine.

20.   Presley was pronounced dead of cardiac arrhythmia by the Shelby County medical examiner.