Treadmill ECG risk stratification

High risk

High-risk Duke treadmill score (<–11)

Exercise-induced ST elevation without diagnostic Q waves (except for leads V1 or aVR)

Excessive ST-segment depression (>2 mm) which persists into recovery

Drop in systolic blood pressure >10 mmHg from baseline despite an increase in workload

Sustained ventricular tachycardia

Intermediate risk

Intermediate risk treadmill score (–11 to +5)

ST depression (<2 mm) at peak stress with normalization in early recovery

Low risk

Low risk treadmill score (>+5)

ECG: electrocardiogram.

Adapted from: Gibbons RJ, Chatterjee K, Daley J, et al. ACC/AHA/ACP-ASIM guidelines for the management of patients with chronic stable angina: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee on the Management of Patients With Chronic Stable Angina). J Am Coll Cardiol 1999; 33:2092.

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Treadmill ECG risk stratification