Risk factors for non response with CRT
About one third of patients who receive a cardiac resynchronization therapy (CRT) do not respond well to the device therapy. Some important risk factors for non response with CRT are:
- Ischemic disease
- Non-left bundle branch block QRS morphology,
- Apical lead position
Vice verse, the best response may be anticipated in non ischemic dilated cardiomyopathy with left bundle branch block morphology and a wide QRS.