Exercise Stress Testing: Duke Treadmill Score11
| Duke Treadmill Score (DTS) = Minutes exercised – [5 × maximum ST-segment deviation] – [4 × angina score]. Angina score: 0 = none, 1 = not test limiting, 2 = test limiting | | DTS | | 5 | Annual mortality 0.25% | Low-risk study | | −10 to 4 | Annual mortality 1.25% | Intermediate-risk study | | <–10 | Annual mortality >5% | High-risk study |
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In general, β-blockers, other nodal blocking agents, and nitrates should be discontinued prior to stress testing.11