Table 2. Clinical characteristics of the sample.
| Characteristics | N | % |
| Heart Disease | ||
| coronary disease | 35 | 43.8 |
| heart failure | 25 | 31.3 |
| Others (valvular heart disease, aortic aneurysm, atrial fibrillation, angina pectoris) | 20 | 25.0 |
| treatment | ||
| pharmacotherapy | 51 | 63.7 |
| surgery | 29 | 36.3 |
| Comorbidities | ||
| hypertension | 29 | 36.3 |
| diabetes | 11 | 13.8 |
| other comorbidities | 11 | 13.8 |
| no comorbidity | 29 | 36.3 |