<?xml version='1.0' encoding='UTF-8'?><xml><records><record><source-app name="HighWire" version="7.x">Drupal-HighWire</source-app><ref-type name="Journal Article">17</ref-type><contributors><authors></authors><secondary-authors><author><style face="normal" font="default" size="100%">Kass, David A.</style></author><author><style face="normal" font="default" size="100%">Abraham, William T.</style></author><author><style face="normal" font="default" size="100%">Bax, Jeroen J.</style></author><author><style face="normal" font="default" size="100%">Hlatky, Mark A.</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Cardiac Resynchronization Therapy—All You Need to Know, 2006</style></title><secondary-title><style face="normal" font="default" size="100%">MD Conference Express</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2006-04-01 00:00:00</style></date></pub-dates></dates><pages><style  face="normal" font="default" size="100%">10-11</style></pages><abstract><style  face="normal" font="default" size="100%">“In at least 25% of patients with heart failure, some form of ventricular conduction delay will complicate the course of their disease,” according to David A. Kass, MD, Division of Cardiology, Johns Hopkins University School of Medicine. Dr. Kass noted that all rhythm disturbances create electrical “dissonance” in electrical activation and mechanical contraction between and/or within ventricles, reducing pump efficiency and lowering ejection fraction.</style></abstract><number><style face="normal" font="default" size="100%">1</style></number><volume><style face="normal" font="default" size="100%">6</style></volume></record></records></xml>