Introduction
Introduction:Global longitudinal strain (GLS) of left ventricle (LV) has an incremental
value over conventional parameters like ejection fraction for risk stratification
in patients referred for cardiac surgery [1]. Mitral annular plane systolic excursion
is a simple parameter obtained by M mode, is also an sensitive marker of LV function
in various clinical settings [2]. It has been demonstrated that, MAPSE and GLS has
similar biological variability in healthy population[3]. The aim of this study was
to assess correlation of MAPSE and GLS in patients with ischemic heart disease undergoing
coronary artery bypass surgery (CABG).
Methods
This was a retrospective study of 51 patients undergoing CABG. A cardiac anesthetist
performed transthoracic echocardiography exam within 24 hours of surgery. GLS was
measured by three apical views: 4-chamber, 2-chamber and long axis view and average
value measured. Average MAPSE was obtained in apical 4-chamber view by aligning M
mode cursor at lateral and septal mitral annulus and averaging the two values. Measurements
of GLS and MAPSE in a sample patient are shown in figure 1. A Pearson's product-moment
correlation was run to assess the relationship between MAPSE and GLS.
Results
The average age of patients was 60 years with 26% females. The average mean GLS was
-12.8 -2.9% and average MAPSE was 10 1.9mm. Figure 2 shows Pearson's product-moment
correlation between two parameters, demonstrating a strong positive correlation with
corelation coefficient, r= 0.83 (p < .0005).
Conclusion
MPASE and GLS are significantly correlated in patients undergoing CABG and MAPSE being
simple parameter can be used as surrogate marker for GLS.
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Copyright
© 2021 Published by Elsevier Inc.
