J-wave duration and slope as potential tools to discriminate between benign and malignant early repolarization

Abstract

(AAM) is copyrighted and published by Elsevier. It is posted here by agreement between Elsevier and the University of Turin. Changes resulting from the publishing process-such as editing, corrections, structural formatting, and other quality control mechanisms-may not be reflected in this version of the text. The definitive version of the text was subsequently published in HEART RHYTHM, 13 (3), 2016, 10.1016/j.hrthm.2015.11.029. You may download, copy and otherwise use the AAM for non-commercial purposes provided that your license is limited by the following restrictions: (1) You may use this AAM for non-commercial purposes only under the terms of the CC-BY-NC-ND license. (2) The integrity of the work and identification of the author, copyright owner, and publisher must be preserved in any copy.

Clinical Significance of J Waves in Patients Undergoing Therapeutic Hypothermia for Out‐of‐Hospital Cardiac Arrest

“…As ER has been related to increased incidence of sudden cardiac arrest in healthy young adults, there has been increasing interest in understanding the clinical significance of J waves. The concept of “benign” versus “malignant” J waves has been described in the young healthy population and was associated with a higher risk of sudden death . However, we did not comment on the “type” of J waves in our cohort given the lack of reports confirming these data.…”

“…) and () present in at least two consecutive leads, as previously defined and published by Macfarlane et al. and Cristoforetti et al . We did not consider ST segment elevation nor T‐wave amplitude while interpreting the presence of J waves and/or measuring its amplitude.…”

Seven years follow‐up of early repolarisation patterns in French elite special forces

“…Such was not the case here. Other significant risk factors were absent: QTc was not >400 ms, T/R ratio was not <0.25 in V5, and J‐wave duration was not >60 ms (Cristoforetti et al., ; Roten et al., ). The association of ER with arrhythmic risk is typically at rest or during sleep, and not during physical activity (Obeyesekere et al., ).…”

The new kids on the block of arrhythmogenic disorders: Short QT syndrome and early repolarization

“…Cristoforetti et al suggested that a duration > 60 milliseconds is a marker of increased risk of VF (P<0.001). 73 Additional studies have sought to investigate if the localization of the J-wave is of any importance and have concluded that global J-waves in both inferior and lateral leads are associated with the highest risk of arrhythmic events (odds ratio 4.87, 95% CI: 2.64-9.01, P < 0.00001), 67 followed by J waves in inferior leads (hazard ratio 3, 95% CI 1.45-5.89 P<0.01). 55 Other ECG findings that have been investigated include the STsegment and the T-wave.…”