Postural ST‐T Wave Changes in the Radioelectrocardiogram Simulating Myocardial Ischemia
作者:
Alan Lachman,
Herbert Semler,
Robert Gustafson,
期刊:
Circulation
(OVID Available online 1965)
卷期:
Volume 31,
issue 4
页码: 557-563
ISSN:0009-7322
年代: 1965
出版商: OVID
数据来源: OVID
摘要:
Six hundred and seventy-six healthy subjects between 5 and 77 years of age have been studied by radioelectrocardiography. These subjects were studied before exercise, during a Master's two-step test, and after exercise. Orthostatic ST-T changes occurred in 32 of 200 subjects (16 per cent). The results indicate that the positioning of the bipolar chest leads is crucial in eliminating “abnormal” ST-T changes caused by changes in posture and position. Criteria for orthostatic ST-T changes have been presented. It is concluded that more rigid criteria for “definitely abnormal” ST-T changes during radioelectrocardiography should be developed, so that coronary artery disease will not be overdiagnosed, nor will significant ST-T changes be regarded as “normal variants” occurring with activity.
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