| Abbreviations | Meaning |
 | APDB | [heart] Action Potential Duration-baseline Beat |
| MH | Medtronic Hall (heart Valves) |
| CLH | Chronic Lobular Hepatitis; Cleft Limb-heart [syndrome]; Corpus Luteum Hormone; Cutaneous Lymphoid Hyperplasia |
| LH | Left Heart |
| RHD | Radiological Health Data; Relative Hepatic Dullness; Renal Hypertensive Disease; Rheumatic Heart Disease |
| MHHP | Minnesota Heart Health Program |
| CHD | Cyanotic Heart Disease |
| HHS | Honolulu Heart Study |
| CASHD | Coronary Arteriosclerotic Heart Disease |
| PLET | Polymyxin, Lysosome, EDTA, Thallous Acetate [in Heart Infusion Agar] |
| TEAHAT | Thrombolysis Early In Acute Heart Attack Trial |
| SAHS | San Antonio Heart Study; Sleep Apnea-hypersomnolence [syndrome] |
| IHR | International Health Regulations; Intrahepatic Resistance; Intrinsic Heart Rate |
| CCF | Congestive Heart Failure |
| AHA | American Heart Association |
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