1. Absence of Flow-Limiting Coronary Artery Disease Among Patients Undergoing Emergent Cardiac Catheterization For ST Segment Elevation Myocardial Infarction in the National Cardiovascular Data Registry CathPCI Registry: Implications for Primary Angioplasty Programs Kalon KL Ho, H Vernon Anderson, Richard E Shaw, Lloyd W Klein, James H Beachy, Christopher P Cannon, Harlan M Krumholz, Susan Fitzgerald, Anthony Hermann, Kristi Mitchell, John Rumsfeld, Ralph G Brindis, on behalf of the National Cardiovascular Data Registry