| Abbreviations | Meaning |
 | OHD | Hydroxylase Deficiency; Hydroxyvitamin D; Office Of Human Development; Ondine-Hirschsprung Disease; Organic Heart Disease |
| CVHD | Chronic Valvular Heart Disease |
| EIHDW | Evaluation Of Ischemic Heart Disease In Women [study] |
| AHA | Anti-heart Antibody; Antihistone Antibody; Area Health Authority; Arthritis-hives-angioedema [syndrome]; Aspartyl-hydroxamic Acid; Autoimmune Hemolytic Anemia |
| DHFS | Diet-Heart Feasibility Study |
| HWI | Heart Weight Index |
| CCHD | Caephilly Collaborative Heart Disease [study]; Cyanotic Congenital Heart Disease |
| CCF | Congestive Heart Failure |
| HRMAX | Maximal Heart Rate |
| WHAT | Worcester Heart Attack Trial |
| THB | Tetrahydrobiopterin; Thrombocyte B; Todd-Hewitt Broth; Total Heart Beats |
| CHT | Classical Heart Transplantation |
| AHR | Atrial Heart Rate |
| HTHD | Hypertensive Heart Disease |
| FHNH | Fetal Heart Not Heard |
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