| HF | Heart Failure |
| NYHA | New York Heart Association |
| CRT | Cardiac Resynchronization Therapy |
| LV | Left Ventricular |
| ICD | Implantable Cardioverter Defibrillator |
| ESC | European Society of Cardiology |
| CCM | Cardiac Contractility Modulation |
| SV | Stroke Volume |
| TPRI | Total Peripheral Resistance Index |
| CO | Cardiac Output |
| SVR | Systemic Vascular Resistance |
| BNP | B-type natriuretic peptide |
| LVEF | Left Ventricular Ejection Fraction |
| OMT | Optical Medical Therapy |
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