1. Volume 59, Issue 2, Pages 125-127 (February 1971)
Frequency and Time of Occurrence of Pain during the Master Two-step Test: “Impending Angina” 
Arthur M. Master, M.D., F.C.C.P. 
CHEST 
Volume 59, Issue 2, Pages (February 1971)
DOI: /chest
Copyright © 1971 The American College of Chest Physicians Terms and Conditions

2. FIGURE 1
The patient, a man of 55 years of age with an anginal syndrome, possessed a normal resting electrocardiogram. The published two-step table called for 38 trips to be completed in three minutes. However, the patient stopped at the 20th trip because of a feeling of “impending pain” in the chest. The post-exercise tracing was negative (upper half). The next day, the test was repeated. This time the patient walked 35 trips and stopped because of real chest pain. “Ischemic” RS-T segment depressions appeared (lower half).
CHEST  , DOI: ( /chest )
Copyright © 1971 The American College of Chest Physicians Terms and Conditions