This Article  • References  • Full text PDF  • Send to a friend  • Save in My Folder  • Save to citation manager  • Permissions  Citing Articles  • Citing articles on Web of Science (1)  • Contact me when this article is cited  Related Content  • Similar articles in this journal  Social Bookmarking   What's this?

I. BRAMBILLA; R. MARGARIA

Arch Intern Med. 1966;117(1):70-73.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

THE ELECTRICAL activity of the ventricular myocardium, ie, ventricular electrical systole, is assumed to begin with the Q wave of the ECG and end with the T wave.

The time between the end of the T and the beginning of the following Q wave, ie, the ventricular electrical diastole, is defined as the resting time of the ventricles.

The correlation between the QT interval and the heart cycle time has been suggested as a quadratic function by Bazett¹ and Heggling and Holzmann,² as a cubic one by Fridericia³ and Schlomka and Raab,⁴ as a linear one by Lombard and Cope⁵ and Adams.⁶

The statistical analyses performed by Sandera,⁷ Brambilla and Margaria,⁸ and Simonson⁹ on representative populations have recently confirmed the linear correlation: this is, as defined by Simonson and based on observations on nearly 1,000 subjects:

1. QT= (242.3+0.0003 years)+0.14 t±16msec where t is the heart cycle time. . . . [Full Text PDF of this Article]

Author Affiliations
MILAN, ITALY

From the Istituto di Fisiologia Umana, Via L. Mangiagalli, 32, Milano.

Footnotes
Received for publication June 1, 1965; accepted Aug 12.

Reprint requests to Laboratorio D'Fisiologia, Universita' D'Milano, Milan, Italy (Dr. Margaria).

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter     What's this?