Soon, La Jolla will be home to two state-of-the-art heart hospitals built only half a mile apart. To some, the proximity of UC San Diego's Sulpizio Cardiovascular Center and Scripps Health's Prebys Cardiovascular Institute just south of Genesee Avenue might look a little too close for comfort. (Prebys Cardiovascular, the region's newest heart hospital, had its grand opening ceremony Thursday.) However, leaders of the UC San Diego Health System and Scripps Health expressed confidence that the beds in their facilities will stay full even as trends in cardiac care shift away from overnight stays and toward less-invasive procedures performed on an outpatient basis.