From a therapeutic point of view, angina pectoris is best thought of a
s an imbalance between oxygen supply and demand. Oxygen supply to the
heart can be increased by improving endothelial function to increase v
asodilation. Non-endothelial-mediated vasodilation will also help incr
ease coronary flow. Coronary vasodilators, such as the calcium blocker
s and nitrates, are effective agents in relieving vasoconstriction and
improving coronary blood flow Reduction of oxygen demand is accomplis
hed by decreasing heart rate, blood pressure, heart size, and left ven
tricular mass. Beta-blockers and heart rate-lowering calcium entry blo
ckers are effective in reducing oxygen demand. Additive effects occur
by combining a beta-blocker and a dihydropyridine calcium entry blocke
r. Together with reduction of risk factors, this combination therapy p
lus aspirin provides optimal management of patients with angina pector
is.