Published online Jun 26, 2015. doi: 10.4330/wjc.v7.i6.315
Peer-review started: August 27, 2014
First decision: October 14, 2014
Revised: February 4, 2015
Accepted: April 1, 2015
Article in press: April 7, 2015
Published online: June 26, 2015
Core tip: We propose a nomenclature for QT-heart rate adjustment formulae consisting of the first letter of the first author’s name followed by the next two consonance with subscripts if the author develops more than one equation. Twenty different QT-heart rate formulae produced discordant calculations of adjusted QT interval. Formulae were categorization into predictive or corrective (QTc) and into linear, rational, exponential, logarithmic, or power based. QTc equations are the most suitable for clinical application. Based on the ability to minimize the slope of a best fit linear relationship between QTc and heart rate, the new formulae QTcDMT and QTcRTHa warrant introduction into clinical practice.