1.   At minimum, the heart rhythm disturbance and its treatment can disrupt daily life and cause constant anxiety.

2.   A rhythm disturbance actually occurs within the lower chambers of the heart.

3.   Heart rhythm disturbances can be associated with scopolamine.

4.   Heart rhythm disturbances have been noted in some crew members during flight.

5.   Implantable defibrillators are routinely used for a relatively small group of patients who, like Vice President Dick Cheney, have demonstrable heart rhythm disturbances.

6.   Tsongas is also receiving treatment for a recurrent heart rhythm disturbance that the hospital said was not life-threatening.

7.   None of men had had significant rhythm disturbances, congestive heart failure or a heart attack within a month of the study.