| Abbreviations | Meaning |
 | HC | Heart Catheterization |
| MACH | Machine Activity [UMLS]; Mortality Assessment In Congestive Heart Failure [study] |
| S1-S4 | First To Fourth Heart Sounds |
| MHHP | Minnesota Heart Health Program |
| FHH | Familial Hypocalciuric Hypercalcemia; Fawn-hooded Hypertensive [rat]; Fetal Heart Heard |
| NHI | National Heart Institute; Nuclear Hepatobiliary Imaging |
| RHC | Right Heart Catheterization |
| MOCHA | Multicenter Oral Carvedilol In Heart Failure Assessment |
| CHARM | Candesartan In Heart Failure Assessment In Reduction Of Mortality |
| HRRI | Heart Rate Retardation Index |
| AHD | Acquired Hepatocerebral Degeneration; Acute Heart Disease; Antihyaluronidase; Antihypertensive Drug; Arterio-hepatic Dysplasia |
| OPTIME | Outcomes Of A Prospective Trial Of Intravenous Milrinone For Exacerbations [of Chronic Heart Failure] |
| M-HART | Montreal Heart Attack Readjustment Trial |
| BHAT | Beta Blocker Heart Attack Trial |
| BFHR | Basal Fetal Heart Rate |
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