Short-Term Hemodynamic Effects of Cardiac Resynchronization Therapy in Patients With Heart Failure, a Narrow QRS Duration, and No Dyssynchrony

L. K Williams, S Ellery, K Patel, F Leyva, R. A Bleasdale, T. T Phan, B Stegemann, V Paul, P Steendijk and M. Frenneaux

Circulation 120 ( 17 ): 1687 - 1694 , 2009