Magnetic measurement of S-T and T-Q segment shifts in humans. Part II: Exercise-induced S-T segment depression.
نویسندگان
چکیده
منابع مشابه
Magnetic measurement of S-T and T-Q segment shifts in humans. Part II: Exercise-induced S-T segment depression.
The direct-current magnetocardiogram, which shows the T-Q (baseline) shift, is used to clarify the cause of S-T depression induced by stress testing in the human heart. Measurements are made of the amount of baseline shift associated with the S-T depression. Results are presented of a well-documented patient, with typical coronary artery disease, undergoing a two-step exercise test. Before exer...
متن کاملBRIEF COMMUNICATIONS Magnetic Measurement of S-T and T-Q Segment Shifts in Humans Part II: Exercise-Induced S-T Segment Depression
The direct-current magnetocardiogram, which shows the T-Q (baseline) shift, is used to clarify the cause of S-T depression induced by stress testing in the human heart. Measurements are made of the amount of baseline shift associated with the S-T depresion. Results are presented of a well-documented patient, with typical coronary artery disease, undergoing a two-step exercise test. Before exerc...
متن کاملMagnetic measurement of S-T and T-Q segment shifts in humans. Part I: Early repolarization and left bundle branch block.
The direct-current magnetocardiogram not only shows the features usually seen on the electrocardiogram, but also shows the T-Q (baseline) shift due to cardiac injury current. The first direct-current magnetocardiogram measurements of the human heart are presented here. The hypothesis tested is that there is no injury current associated with the S-T shift seen in two electrocardiogram abnormalit...
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Three hundred and fourteen male insurance underwriters had near-maximal treadmill exercise tests after having been evaluated for coronary risk factors. Thirty subjects developed ischemic-type S-T-segment depression during or after exercise not associated with anginal pain. The abnormal electrocardiographic response correlated significantly with elevated serum cholesterol, abnormal rest electroc...
متن کاملMechanism of S-T segment alteration during acute myocardial injury.
ELECTEOCARDIOGRAPHIC changes after myocardial injury were first described exactly half a century ago when Eppinger and Rothberger, using an esophageal-rectal lead, noted the "disappearance of the valley between the R and T waves" in dogs which had received injections of 20 per cent silver nitrate solution into the left ventricle. Pardee, in 1920, was the first to note S-T segment changes in a p...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1983
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.53.2.274