11.   Atlanta heart patients Joan Hall and Shirley Jackson learned these truths the hard way.

12.   A heart patient, she did this every other week.

13.   A small battery-powered pacemaker, like many heart patients have, was implanted near the collarbone.

14.   A study of heart patients linked salt to hypertension, which in turn was linked to heart disease.

15.   A simple, safe heart-monitoring device attached to a computer is now available to replace the more risky catheterization used for decades on heart patients.

16.   Again, no heart patients were harmed, said Sam Lopez, a hospital spokesman.

17.   But until today, no study could say if this is because black heart patients have less severe coronary disease or other medical differences that made surgery less advisable.

18.   Cardiologists now argue that it is time to give up on emergency medical squads as the chief means of reviving heart patients.

19.   Cascades volcanoes bristle with instruments that monitor their activity, like electrodes covering the chest of a heart patient.

20.   Coronary bypass surgery, in which leg veins are used to replace clogged arteries supplying the heart, has been a boon to millions of heart patients.