| Abbreviations | Meaning |
 | V-HEFT | Vasodilator Heart Failure Trial; Veterans Administration Heart Failure Trial |
 | HLA | Heart, Lungs, Abdomen |
 | THB | Tetrahydrobiopterin; Thrombocyte B; Todd-Hewitt Broth; Total Heart Beats |
 | HDH | Heart Disease History |
 | AHMD | Alcoholic Heart Muscle Disease |
 | CHLS | Combined Heart And Lung Surgery |
 | HS | Heart Sounds |
 | WATCH | Warfarin Antiplatelet Trial In Chronic Heart Failure; Worcester-area Trial For Counseling In Hyperlipidemia |
 | HMO | Health Maintenance Organization; Heart Minute Output |
 | VHD | Ventricular Heart Disease |
 | MHHS | Minnesota Heart Health Survey |
 | PMHR | Predicted Maximum Heart Rate |
 | CSCHDS | Caerphilly And Speedwell Collaborative Heart Disease Studies |
 | CEHC | Calf Embryonic Heart Cell; Cost-effective Healthcare |
 | HDRF | Heart Disease Research Foundation |