Longitudinal Strain and Sudden Cardiac Death

Several cardiac conditions are associated with the risk of ventricular arrhythmias (VAs) and sudden cardiac death (SCD). Identification of the individuals at increased risk of these events is essential to facilitate the appropriate measures to prevent SCD. Several clinical, electrocardiographic, and...

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Published inJournal of The Indian Academy of Echocardiography & Cardiovascular Imaging Vol. 7; no. 2; pp. 147 - 153
Main Author Vijayaraghavan, Govindan
Format Journal Article
LanguageEnglish
Published Medknow Publications and Media Pvt. Ltd 01.05.2023
Wolters Kluwer Medknow Publications
Subjects
Arrhythmia
Cardiac arrest
global longitudinal strain
Heart
longitudinal strain
mechanical dispersion
Prevention
speckle-tracking echocardiography
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Summary:Several cardiac conditions are associated with the risk of ventricular arrhythmias (VAs) and sudden cardiac death (SCD). Identification of the individuals at increased risk of these events is essential to facilitate the appropriate measures to prevent SCD. Several clinical, electrocardiographic, and imaging markers have been used for this purpose with varying accuracy. Recently, longitudinal myocardial strain assessed using speckle-tracking echocardiography has been shown to have incremental value in the prediction of SCD risk. Strain imaging allows quantification of the abnormalities in the magnitude and timing of the segmental myocardial contraction, which is a surrogate for underlying myocardial fibrosis and myofiber disarray. Reduced segmental strain and temporal heterogeneity indicate electromechanical dispersion, which is the primary substrate for VAs and SCD. This review summarizes current evidence regarding the utility of longitudinal strain for the prediction of SCD risk.
ISSN:2543-1463
2543-1471
DOI:10.4103/jiae.jiae_23_22