Optima Coronary Artery Disease (CAD) (Optimal Mechanical Evaluation)

Inclusion Criteria

1. Ischemic Cardiomyopathy
2. Left ventricular ejection fraction less than 40%
3. Clinical indication for invasive electrophysiology testing
4. Patient is at least 18 years of age

Exclusion Criteria

1. Unstable angina, acute myocardial infarction and/or revascularization procedure within 3 months
2. CVA or TIA within the past 6 months
3. Prosthetic heart valve
4. Patient is status post heart transplant
5. Women who are pregnant or with child -bearing potential and who are not on a reliable form of birth control. Women of child-bearing potential are routinely tested for pregnancy as part of the standard of care prior to EPS procedures being performed.