NEW ORLEANS (AP) - Doctors may have a better way to do heart diagnostic tests and procedures to open clogged heart arteries.
    
A new study finds fewer complications when these are done through an artery in an arm instead of one in a leg. Using the leg is common practice now.
    
The arm method is used a lot in Europe, Canada and other areas. But is used in fewer than 5 percent of these procedures in the U.S.
    
It is one of two new studies that could change care for hundreds of thousands of heart patients each year. The other finds that bypass surgery has been overrated for many people with very weak hearts from clogged arteries and previous heart attacks.
    
The studies were discussed Monday at a cardiology conference in New Orleans.