A 45-year-old with constrictive cardiomyopathy who developed acute dyspnea and agitation about 1 hour before shift change.

A 26-year-old with heart failure caused by congenital mitral stenosis who is scheduled for balloon valvuloplasty later today.

A 77-year-old who transferred from intensive care 2 days ago after coronary artery bypass grafting and has a temperature of 100.6 degrees F.

A 56-year-old who had a coronary angioplasty and stent placement yesterday and has complained of occasional chest pain since the procedure.