CARDIAC REVIEWED BY Chrissy Thomson ASA SIG: Cardiac REFERENCE
Feasibility, reproducibility, and clinical implications of the novel fully automated assessment for global longitudinal strain
Kawakami H, Wright L, Nolan M, Potter E, Yang H, Marwick T. J Am Soc Echocardiogr 2021; 34:136-45 READ THE FULL ARTICLE HERE
WHY THE STUDY WAS PERFORMED: The aim of this study was to compare the feasibility, reproducibility and predictive value of fully automated global longitudinal strain (GLS) analysis with manual and semiautomated assessment of GLS.
HOW THE STUDY WAS PERFORMED: In this retrospective study, GLS analysis was performed on echocardiograms from 561 asymptomatic patients (≥65 years) with heart failure risk factors. All patients were required to have image quality sufficient for GLS analysis and available data on follow-up outcomes of cardiac events (new heart failure and cardiac death). Left ventricular GLS was performed on apical 4, apical 2 and apical long-axis images and was calculated using three methods – fully automated, semi-automated (whereby the automated analysis was adjusted by an experienced investigator) and manual analysis. In addition, a subset of 50 randomly selected patients was evaluated for calculation time, and inter- and intra-observer variability.
WHAT THE STUDY FOUND: The fully automated GLS analysis was reviewed by an experienced investigator and found to be feasible in 60.6% of patients. Of note, the apical segments in all views, the mid anterior and the basal anteroseptum required frequent manual correction (40% of cases). Figure 1 demonstrates the quality of automated tracking in each segment.
Figure 1 – adapted from Figure 2: J Am Soc Echocardiogr 2021;34:136-45
Making waves
JANUARY 2022 | 10
