| • Recent onset of symptoms | • Severe symptoms (minimal exertion or nocturnal angina) |
| • Rapidly progressive symptoms | • Angina refractory to medical treatment |
| • Possible aortic stenosis | |
| • Threatened employment | |
| • Recent onset of symptoms | • Severe symptoms (minimal exertion or nocturnal angina) |
| • Rapidly progressive symptoms | • Angina refractory to medical treatment |
| • Possible aortic stenosis | |
| • Threatened employment | |