Heart Failure Support Group
Heart failure is a condition that can result from any structural or functional cardiac disorder that impairs the ability of the heart to fill with or pump a sufficient amount of blood throughout the body. It is often undiagnosed due to a lack of a universally agreed definition and difficulties in diagnosis, particularly when the condition is considered "mild."
You might want to reference this link on the subject. According to studies patients with a QRS of less than 150ms do not benefit from a CRT. I'm struggling with the same decision and am leaning toward not getting the CRT. Have you considered an LVAD?
http://www.theheart.org/article/1238087.do