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Previous Volume 340:381-383 February 4, 1999 Number 5 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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The electrocardiogram continues to be a valuable, noninvasive, easily repeatable, and inexpensive means of diagnosing many cardiac abnormalities, such as myocardial infarction, ischemia, and ventricular hypertrophy, and it is unequaled in the analysis of cardiac arrhythmias. Also, in the past few decades the clinical information that can be derived from the electrocardiogram has grown continually.¹

Traditionally, 12 leads are recorded, 6 leads on the extremities and 6 on the precordium. This has been the standard approach for almost half a century. The extremity leads give a more distant image of the electrical activity of the heart. For example, leads II . . . [Full Text of this Article]

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Related Letters:

Exercise Electrocardiography with Right Precordial Leads
Lauer M. S., Cole C., Krumholz H. M., Pennell D., Cohen H. E., Smulyan H., Fruehan C. T., Michaelides A. P., Andrikopoulos G. K., Toutouzas P., Wellens H. J.J.
Extract | Full Text  
N Engl J Med 1999; 341:208-210, Jul 15, 1999. Correspondence

This article has been cited by other articles:

• Schmitt, C., Lehmann, G., Schmieder, S., Karch, M., Neumann, F.-J., Schomig, A. (2001). Diagnosis of Acute Myocardial Infarction in Angiographically Documented Occluded Infarct Vessel : Limitations of ST-Segment Elevation in Standard and Extended ECG Leads. Chest 120: 1540-1546 [Abstract] [Full Text]  
• Lauer, M. S., Cole, C., Krumholz, H. M., Pennell, D., Cohen, H. E., Smulyan, H., Fruehan, C. T., Michaelides, A. P., Andrikopoulos, G. K., Toutouzas, P., Wellens, H. J.J. (1999). Exercise Electrocardiography with Right Precordial Leads. NEJM 341: 208-210 [Full Text]