This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Madias, J. E. Articles by Hodd, W. B. Search for Related Content PubMed PubMed Citation Articles by Madias, J. E. Articles by Hodd, W. B., Jr

Circulation, Vol 52, 799-809, Copyright © 1975 by American Heart Association

ARTICLES

Precordial ST-segment mapping 1. Clinical studies in the coronary care unit

JE Madias, K Venkataraman and WB Hodd Jr

Precordial ST-segment mapping Was applied serially in the coronary care unit for the study of 46 patients with myocardial infarction (MI), using a 49-lead system. Data from the maps were compared with clinical status of patients, conventional ECGs obtained simultaneously, and serum enzyme levels. Stability of the maps over a one hour period was noted in the early phase of admission. However, a drop of 32% of the sum of ST-segment elevations (+sigma ST) was detected in eight patients with uncomplicated anterior MI over the first 24 hours after admission. Extension of infarction was associated with abrupt rise of + sigma ST, and was diagnosed in two cases from maps in the presence of unchanged standard ECGs. The course of ST elevations was followed more accurately by the map than the standard ECG in eight patients. Pericarditis invalidated the technique completely, due to persistent + sigma ST. The standard ECG was superior to the map in following patients with inferior MI. A case of true posterior MI was more accurately delineated by maps of the posterior thorax than by the standard ECG. Intraventricular conduction defects and pacemaking interfered with maps. Early repolarization produced stable maps; however, mapping showed no advantages over the standard ECG. Preinfarction angina can probably be followed by serial mapping of ST-segment depression.

This article has been cited by other articles:

				I.B.A Menown, J Allen, J.M. Anderson, and A.A.J Adgey ST depression only on the initial 12-lead ECG: early diagnosis of acute myocardial infarction Eur. Heart J., February 1, 2001; 22(3): 218 - 227. [Abstract] [PDF]

				I.B.A Menown, G Mackenzie, and A.A.J Adgey Optimizing the initial 12-lead electrocardiographic diagnosis of acute myocardial infarction Eur. Heart J., February 2, 2000; 21(4): 275 - 283. [Abstract] [PDF]