| Abbreviations | Meaning |
 | LHS | Lung Heart Study |
| HFR | Heart Frequency; High Frequency |
| HR | Heart Rate |
| FHF | Fetal Heart Frequency; Fulminant Hepatic Failure |
| HRA | Heart Rate Audiometry |
| FHR | Fetal Heart Rate |
| AHMA | Antiheart Muscle Autoantibody |
| ENRICHD | Enchancing Recovery In Coronary Heart Disease Patients [trial] |
| OHS | Open Heart Surgery |
| AVHD | Acquired Valvular Heart Disease |
| HRA | Heart-reactive Antibody |
| MHV | Magnetic Heart Vector; Middle Hepatic Vein; Mouse Hepatitis Virus; Murine Hepatitis Virus |
| HHD | High Heparin Dose; Home Hemodialysis [telemedicine]; Hypertensive Heart Disease |
| HT | Heart; Heart Tones; Height; High Tension |
| CHARM | Candesartan In Heart Failure Assessment In Reduction Of Mortality |
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