Abstract
The Extracorporeal Life Support Organization (ELSO) Registry is used by a variety of stakeholders to improve patient and institutional care quality, support research and device regulation, monitor practice patterns, and share best practices. To achieve these goals, Registry data must be accurate and reliable. In this article, we review the process of ELSO Registry data collection, assess data completeness and integrity, and report on the current status of the data. While accuracy is generally high, it can vary, leaving room for further improvement. Understanding the quality of the data is essential for using it effectively.