| Abbreviations | Meaning |
 | MBPM | Modified Backward Prony Method [spectral Analysis Of Heart Sounds] |
 | HTX | Heart Transplantation |
 | NHLI | National Heart And Lung Institute [NIH] |
 | NHI | National Heart Institute; Nuclear Hepatobiliary Imaging |
 | SDHD | Sudden Death Heart Disease |
 | ST/HR | ST Segment [ECG] Depression With Exercise Divided By Changes In Heart Rate |
 | NAHC | National Advisory Heart Council |
 | FHNH | Fetal Heart Not Heard |
 | HCA | Heart Cell Aggregate |
 | MISCHF | Management To Improve Survival In Congestive Heart Failure |
 | HRA | Heart-reactive Antibody |
 | DAH | Diffuse Alveolar Hemorrhage; Disordered Action Of The Heart |
 | HHS | Honolulu Heart Study |
 | SACCAT | Stretch-activated Channel-cations [heart Contraction] |
 | I(TO) | Transient Outward Current [heart Electrical Activity] |