Table 1.
• Angina at rest—Also prolonged, usually > 20 minutes |
• Angina of new onset—At least CCS class III in severity |
• Angina increasing—Previously diagnosed angina that has become more frequent, longer in duration, or lower in threshold (change in severity by ≥ 1 CCS class to at least CCS class III) |
CCS=Canadian Cardiovascular Society |