Cardiac Assist with a Twist: Apical Torsion as a Means to Improve Heart Function76Trumble, Dennis RBoretzky, StaciDoyle, MarkBiederman, RobertAuthor information1Gerald McGinnis Cardiovascular Institute, Allegheny General Hospital, Pittsburgh, PA; 2Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA.Artificial Organs 33(5):p A21, May 2009.Copyright © 2009 Blackwell Publishing Ltd.