But two-thirds of American heart-attack patients receive no clot-dissolving drug at all.

In the United States, health insurance plans generally cover the costs of clot-dissolving drugs.

Also, more British patients are treated with clot-dissolving drugs.

Scientists have not yet established which clot-dissolving drug is most effective in saving lives.

Doctors are trying several new methods to help clot-dissolving drugs achieve their best effects.

But the clot-dissolving drugs seem to make the clearest and most immediate difference to the greatest number of people.

A patient from whom a clot-dissolving drug is withheld might die of a heart attack.

At the hospital, her arteries are opened with a clot-dissolving drug, streptokinase.

They receive clot-dissolving drugs and other agents in intensive care units.

"Most heart attack patients given clot-dissolving drugs can be left alone."