Observational StudyAssessment of Biomarkers in Patients With Decompensated Heart Failure and Underlying Coronary Artery Disease

Inclusion Criteria:

Group 1: Heart Failure with Coronary Artery Disease Subjects

• Symptomatic heart failure (≥ 3 months) with most recently documented LVEF ≤ 40% (Echo must have been completed in last 12 months prior to enrollment.)
• Significant underlying coronary artery disease as evidenced by:
• previous myocardial infarction
• prior coronary artery bypass graft
• 50% coronary stenosis of one or more arteries and/or
• history of percutaneous coronary intervention with or without stenting
• Age 18 years or older at the first screening visit

Group 2: Healthy Subjects

• Age 18 years or older at the first screening visit and within 20% of mean age of Group 1 Subjects

Exclusion Criteria:

Group 1:

• Documented history of "severe" valvular disease
• Documented history of atrial fibrillation, ventricular fibrillation or ventricular tachycardia.
• Recent or current use of anticoagulant medications such as fXa inhibitors, direct thrombin inhibitors, vitamin K antagonists, or heparin. (within 1 month of screening)

Group 2:

• Known significant cardiovascular or hematological condition
• Recent or current use of anticoagulant medications such as fXa inhibitors, direct thrombin inhibitors, vitamin K antagonists, or heparin. (within 1 month of screening)
• Recent cold or flu symptoms, respiratory infection or surgery (within 2 weeks of screening)
• History of Asthma
• History of peptic ulcers