| 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 |