Journal of Clinical and Preventive Cardiology

REVIEW ARTICLE
Year
: 2019  |  Volume : 8  |  Issue : 2  |  Page : 71--79

QT interval – Its measurement and clinical significance


Sita Ram Mittal 
 Department of Cardiology, Mittal Hospital and Research Centre, Ajmer, Rajasthan, India

Correspondence Address:
Sita Ram Mittal
Xi/101, Brahmpuri, Ajmer - 305 001, Rajasthan
India

QT interval extends from the beginning of QRS complex to the end of T wave. Thus, it includes the duration of ventricular depolarization (QRS) and repolarization (J point to end of T wave). It corresponds to the duration of cellular action potential. “long-” and “short”-QT intervals are considered as risk markers for cardiac arrhythmias and sudden death. In the last decade, there have been significant advances in our understanding about measurement and significance of QT interval. We have made an attempt to review the literature to find the limitations and queries surrounding the present status of measurement of QT interval and its significance as a risk marker for cardiac arrhythmias and sudden death.


How to cite this article:
Mittal SR. QT interval – Its measurement and clinical significance.J Clin Prev Cardiol 2019;8:71-79


How to cite this URL:
Mittal SR. QT interval – Its measurement and clinical significance. J Clin Prev Cardiol [serial online] 2019 [cited 2022 Dec 3 ];8:71-79
Available from: https://www.jcpconline.org/article.asp?issn=2250-3528;year=2019;volume=8;issue=2;spage=71;epage=79;aulast=Mittal;type=0