| Abbreviations | Meaning |
 | LRL | Lower [heart] Rate Limit |
| TAH | Total Abdominal Hysterectomy; Total Artificial Heart |
| AHR | Antihyaluronidase Reaction; Aryl Hydrocarbon Receptor; Association For Health Records; Atrial Heart Rate |
| EHVT | Edinburgh Heart Valve Trial |
| HFR | Heart Frequency; High Frequency |
| VDH | Valvular Disease Of The Heart |
| SPWVD | Smooth Pseudo-Winger-Ville Distribution [heart Rate Signal] |
| HW | Half-width; Healing Well; Heart Weight; Hypertriglyceridemic Waist |
| BMH | Biomechanical Heart |
| HDP | Heart Disease Program [computerized Diagnosis]; Hexose Diphosphate; High-density Polyethylene; Hydrogen Diphosphonate; Hydroxydimethylpyrimidine |
| HRRR | Heart Regular Rate And Rhythm |
| RHR | Renal Hypertensive Rat; Resting Heart Rate |
| HWD | Heartworm Disease |
| HEHR | Highest Equivalent Heart Rate |
| HDH | Heart Disease History |
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