| Abbreviations | Meaning |
 | GWTG | Get With The Guidelines [American Heart Association] |
| PHAVER | Pterygia-heart Defects-autosomal Recessive Inheritance-vertebral Defects-ear Anomalies-radial Defects [syndrome] |
| WHT | Walsh-Hadamard Transform; Warm Heart Trial |
| THB | Tetrahydrobiopterin; Thrombocyte B; Todd-Hewitt Broth; Total Heart Beats |
| HRRR | Heart Regular Rate And Rhythm |
| IN-CHF | Italian Network Congestive Heart Failure |
| BHR | Basal Heart Rate; Benign Hypertrophic Prostatitis; Borderline Hypertensive Rat; Bronchial Hyperreactivity |
| CHD | Congenital Heart Disease |
| WHAS | Women's Health And Aging Study; Women's Heart Attack Study |
| LHS | Lung Heart Study |
| NAHC | National Advisory Heart Council |
| HT | Heart |
| CLH | Chronic Lobular Hepatitis; Cleft Limb-heart [syndrome]; Corpus Luteum Hormone; Cutaneous Lymphoid Hyperplasia |
| TEAHAT | Thrombolysis Early In Acute Heart Attack Trial |
| SYMPHONY | Sibrafiban Vs Aspirin To Yield Maximum Protection From Ischemic Heart Events Postacute Coronary Syndromes [trial] |
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