| BAASIS | Basel Assessment of Adherence to Immunosuppressive Medications Scale |
| CG | control group |
| eHealth | use of information and communication technologies for health |
| EHR | electronic health records |
| HTx | heart transplant |
| IG | intervention group |
| IMTS | Immunosuppressive Medication Timing Scale |
| ISHLT | International Society of Heart and Lung Transplantation |
| mHealth | mobile health |
| mHeart | a mobile health system for the heart transplant population |
| MNA | medication non-adherence |
| RCT | randomized controlled trial |
| SMAQ | Spanish version of the Simplified Medication Adherence Questionnaire |