Table 1.
Study Population
| Baseline characteristics | |
|---|---|
|
Sex |
|
| Male |
57% |
| Female |
43% |
|
Age (years±SD) |
54 (±17) |
|
Family history of dilated cardiomyopathy |
10% |
|
Family history of CAD |
18% |
|
NYHA class |
|
| I |
26% |
| II |
49% |
| III |
24% |
| IV |
1% |
|
Ejection fraction (±SD) |
38% (±11%) |
|
History of alcohol excess |
7% |
|
Preceding flu-like illness |
8% |
|
Comorbidities |
|
| Diabetes |
28% |
| Hypertension |
75% |
| Atrial fibrillation |
17% |
| Muscular dystrophy |
3% |
|
Prior revascularizations |
|
| CABG |
7% |
| PCI |
29% |
|
Cardiac diagnostics |
|
| Prior SPECT |
18% |
| Prior echocardiogram |
100% |
| Prior coronary angiogram |
59% |
|
Referral indications |
|
| Assessment of cardiomyopathy of unknown etiology |
59% |
| Assessment of viability |
31% |
| Assessment of suspected myocarditis |
5% |
| Other | 5% |
CAD=Coronary artery disease; NYHA=New york heart association; PCI=Percutaneous coronary intervention; CABG=Coronary artery bypass grafting; SPECT=Single photon emission computed tomography.