Patient Characteristics
| Characteristic | n or mean ± SD |
| No. of patients | 22 |
| Age (y) | 70 ± 12 |
| Male | 16 (73%) |
| NYHA class (I/II/III/IV) | 0/2/2/18 |
| BNP (pg/mL) | 524 (258–744) |
| Coronary risk factors | |
| Hypertension | 21 (95%) |
| Dyslipidemia | 15 (68%) |
| Diabetes mellitus | 13 (59%) |
| Interval (d) | |
| Onset to first MPI | 8 (6–12) |
| Nicorandil-stress and rest | 3 (3–5) |
| Onset to CAG | 7 (4–15) |
| Previous MI | 20 (91%) |
| 1VD/2VD/3VD | 2/7/13 |
NYHA = New York Heart Association; BNP = brain natriuretic peptide; MPI = myocardial perfusion imaging; MI = myocardial infarction; VD = vessel disease.
Categorical data are expressed as numbers, followed by percentages in parentheses, unless otherwise indicated; continuous data are expressed as mean ± SD or median (25th–75th).