| Abbreviations | Meaning |
 | CHS | Charleston Heart Study |
| HT | Heart |
| CLH | Cleft Limb-heart (syndrome) |
| RHB | Regional Hospital Board [UK]; Right Heart Bypass |
| HWI | Heart Weight Index |
| H&L | Heart And Lung [machine] |
| CHS | Copenhagen City Heart Study |
| CCHD | Caephilly Collaborative Heart Disease [study]; Cyanotic Congenital Heart Disease |
| NHLBI-ICD | National Heart, Lung And Blood Institute Implantable Cardioverter Defibrillator [trial] |
| OHT | Ocular Hypertension; Orthotopic Heart Transplantation; Oslo Heart Trial |
| LIHFE | Living With Heart Failure [questionnaire] |
| CHB | Chronic Hepatitis B; Complete Heart Block; Congenital Heart Block |
| RHC | Right Heart Catheterization |
| PRIME | Prospective Randomized Study Of Ibopamine On Mortality And Efficacy In Heart Failure |
| QHFT | Quinapril Heart Failure Trial |
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