Version June 2024
| Absolute |
| Moderately severe angina (defined as 3 on a standard scale) |
| Drop in systolic blood pressure of >10 mmHg from baseline blood pressure*, despite an increase in workload, when accompanied by other evidence of ischemia |
| Sustained ventricular tachycardia |
| Signs of poor perfusion (eg, pallor or cyanosis) |
| ST elevation (+1.0 mm) in leads without diagnostic Q waves (other than V1 or aVR) |
| Increasing nervous system symptoms (eg, ataxia, dizziness, near syncope, or confusion) |
| Technical difficulties monitoring the ECG or systolic blood pressure |
| Subject's desire to stop |
| Relative |
| ST or QRS changes such as extensive ST depression (>2 mm of horizontal or downsloping ST-segment depression) or marked axis shift |
| Drop in systolic blood pressure of >10 mmHg from baseline blood pressure*, despite an increase in workload, in the absence of other evidence of ischemia |
| Arrhythmias other than sustained ventricular tachycardia, including multifocal PVCs, triplets of PVCs, supraventricular tachycardia, heart block, or bradyarrhythmias |
| Development of bundle branch block or intraventricular conduction delay that cannot be distinguished from ventricular tachycardia |
| Chest pain that is increasing |
| Fatigue, shortness of breath, wheezing, leg cramps, or claudication |
| Hypertensive response (systolic BP >250 mmHg and/or diastolic BP >115 mmHg) |
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