digitalis therapy, the administration of a digitalis preparation to a person with a heart disorder to increase the force of myocardial contractions; produce a slower, more regular apical rate; and slow the transmission of impulses through the conduction system. It may be used in treating many cardiac disorders, including atrial fibrillation, atrial septal defect, coarctation of the aorta, congenital heart block, congestive heart failure, endocardial fibroelastosis, great vessel transposition, malformation of the tricuspid valve, myocarditis, paroxysmal atrial tachycardia, and patent ductus arteriosus. ▪ OUTCOME CRITERIA: In addition to promoting more forceful myocardial contractions and a slower, more regular apical beat, digitalis therapy can reduce venous pressure, improve pulmonary and systemic circulation, increase urinary output, reduce edema, and stop paroxysmal atrial tachycardia and atrial fibrillation.
