Reduction or Extension of COnduction Time With Ventricular Electromechanical Remodeling (RECOVER)
Reduction or Extension of COnduction Time With Ventricular Electromechanical Remodeling (RECOVER)
This prospective multicenter registry study aims to detect the serial changes in
 ventriculo-ventricular conduction times according to cardiac-resynchronization therapy
 response.
Inclusion Criteria:

 -  meeting the current ESC or ACCF/AHA/HRS Class I or Class IIa indications for
 cardiac-resynchronization (CRT) implant

 Exclusion Criteria:

 -  Myocardial infarction, unstable angina within 40 days prior the enrollment

 -  Recent cardiac revascularization in the 4 weeks prior to the enrollment or planned for
 the 3 months following

 -  Cerebrovascular accident (CVA) or transient ischemic attack (TIA) in the 3 months
 prior to the enrollment

 -  Primary valvular disease requiring surgical correction

 -  Pregnant or are planning during the duration of the investigation

 -  Status 1 candidate for cardiac transplantation or consideration for transplantation
 over the next 12 months

 -  Post-cardiac transplantation

 -  Life expectancy < 12 months

 -  Currently participating in any other clinical investigation except for observational
 registry