PMID: 7137038Nov 1, 1982Paper

Application of body surface mapping to exercise testing: S-T80 isoarea maps in patients with coronary artery disease

The American Journal of Cardiology
F G YanowitzJ A Abildskov


Body surface electrocardiographic maps were recorded before and after exercise in 25 men with angiographically documented coronary disease. Torso potential distributions at 192 locations were derived from a 32 lead electrode array using methods previously described in our laboratory. The S-T segment was characterized by the spatial distribution of the integral of S-T segment voltage over 80 ms (S-T80). Body surface regions where the S-T80 areas were =8 mV . ms or greater were identified in 18 of 25 patients. The most negative S-T80 site on the map was called the "S-T80 minimum." The S-T80 minima were located 1 or 2 electrode rows away from the standard V4--V6 electrode positions in 6 of 18 patients who developed S-T80 areas of -8 mV . ms or greater. Our data suggest that standard electrocardiographic leads may not be optimal for identifying S-T segment depression in all patients with coronary disease. Furthermore, body surface mapping during exercise provides a more quantitative and qualitative method for characterizing the ischemic response to exercise.


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Dec 1, 1980·The American Journal of Cardiology·D M Mirvis
Feb 1, 1964·American Heart Journal·H BLACKBURN, R KATIGBAK


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