Mid-Q Response Study

Exclusion Criteria

• •Subject is less than 18 years of age (or has not reached minimum age per local law if that is higher).
• •Subject is not expected to remain available for at least 1 year of follow-up visits.
• •Subjects has permanent atrial arrhythmias for which pharmacological therapy and/or cardioversion have been unsuccessful or have not been attempted.
• •Subject is, or previously has been, receiving cardiac resynchronization therapy.
• •Subject is currently enrolled or planning to participate in a potentially confounding drug or device trial during the course of this study. Co-enrollment in concurrent trials is only allowed when documented pre-approval is obtained from the Medtronic study manager.
• •Subject has unstable angina, or experienced an acute myocardial infarction (MI) or received coronary artery revascularization (CABG) or coronary angioplasty (PTCA) within 30 days prior to enrollment.
• •Subject has a mechanical tricuspid heart valve or is scheduled to undergo valve repair or valve replacement during the course of the study.
• •Subject is post heart transplant (subjects on the heart transplant list for the first time are not excluded).
• •Subject has a limited life expectancy due to non-cardiac causes that would not allow completion of the study.
• •Subject is pregnant (if required by local law, women of child-bearing potential must undergo a pregnancy test within seven days prior to device implant).