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Previous Volume 328:287 January 28, 1993 Number 4 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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To the Editor: Vincent and colleagues (Sept. 17 issue)¹ ably describe the spectrum of symptoms and QT intervals related to the long-QT syndrome. It is not surprising that the QT interval corrected for heart rate (QT_c) was not always adequate for an accurate diagnosis. Indeed, it is amazing that the QT_c works as well as it often does. The authors' formula for QT_c is the original formula and one of many². Based on the study of 39 patients, it was published in 1920 by Bazett³. The probable reason it is helpful in a variety of situations is . . . [Full Text of this Article]

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