Breijo Márquez Francisco R*

Clinical and Experimental Cardiology, Department in Chief, East Boston Hospital, School of Medicine, Massachusetts, U.S.A

*Corresponding Author: Breijo Márquez Francisco R, Clinical and Experimental Cardiology, Department in Chief, East Boston Hospital, School of Medicine, Massachusetts, U.S.A.

Received: February 24, 2022; Published: March 16, 2022

For many authors, the electrical cardiac systole includes from the beginning of the Q wave (or beginning of the R wave if there is no Q wave) to the ending of the T wave, wherever the descending branch of the T wave reaches the isoelectric line of the ECG.

Keywords: Electrocardiography; QT Interval; Interval Length; Normal Values; Discrepancies with QT Interval Values

References

1. Bazett HC. “An analysis of the time-relations of electrocardiograms”. Heart 7 (1920): 353-370.
2. Fridericia LS. “The duration of systole in an electrocardiogram in normal humans and in patients with heart disease”. Annals of Noninvasive Electrocardiology (1920).
3. Taran LM and Szilagyi N. “The duration of the electrical systole (QT) in acute rheumatic carditis in children”. American Heart Journal 33 (1947): 14-26.
4. Miguel A., et al. “Who Was the Creator of Bazett´s Formula?” Revista Española de Cardiología (2008): 896-897.
5. Dr Elibet Chávez González. “The QT interval, its origin and importance of the knowledge of formulas for its measurement in different clinical circumstances”. Cor Salud 1 (2014): 79-85.

Citation

Citation: Breijo Márquez Francisco R. “An International Consensus for the Value of the Electrocardiographic QT Interval”.Acta Scientific Medical Sciences 6.4 (2022): 107-109.

Copyright

Copyright: © 2022 Breijo Márquez Francisco R. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.