Emergency physicians in Cambridge and Ipswich in the UK prospectively documented their echo use in cardiac arrest. Images were easily acquired, were quickly obtained, and influenced management. In keeping with previous studies, absence of ventricular wall motion predicted lack of return of spontaneous circulation, with a negative predictive value of 97%.

An evaluation of echo in life support (ELS): is it feasible? What does it add?
Emerg Med J. 2010 Oct 4. [Epub ahead of print]