As hospital ethics committees (HECs) become more common in American hospitals, their degree of success should be measured. Just as new technological procedures are evaluated, institutional innovations should also be evaluated. Currently, little is known about the success of HECs, and some authors have wondered whether these committees serve any useful purpose at all. This article reviews the descriptive results of a 1990 study on HEC success as they pertain to the question of how to measure committee success.