Abstract
<h3>To the Editor.—</h3> In reference to the Question and Answer relating to digitalis effect on the ECG exercise test (<b>217</b>:485, 1971), using a generally accepted criterion of a positive ECG response to exercise, ie, flat or downsloping ST-segment in one or more post-exercise lead, equal to or greater than 1.0 mm in magnitude, normal persons given digitalis often may show "pseudo-positive" exercise ECGs even though the control tracing reveals little or no digitalis effects on the ST-segments. Illustrative cases are reported by Kawai and Hultgren (<i>Amer Heart J</i><b>68</b>:409, 1964). Their article contains other pertinent bibliographic references.
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