Why the study?
Speckle tracking strain overcomes many limitations of left ventricular ejection fraction by accounting for segmental LV function, detecting multi-directional myocardial deformation, and identifying sub-clinical LV dysfunction.
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Design
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Speckle tracking strain provides incremental clinical utility over LVEF by detecting sub-clinical LV dysfunction and aiding in the diagnosis and management of various cardiac conditions.
Speckle tracking strain (STS) is an advanced echocardiographic modality that is being increasingly implemented as part of the routine clinical echocardiographic assessment. It can overcome many of the limitations of left ventricular ejection fraction (LVEF), as STS also accounts for segmental LV function and detects multi‐directional components of myocardial deformation. Furthermore, it is able to detect sub‐clinical changes in LV function, which may not be reflected by the LVEF. This may allow more opportunity for intervention prior to the development of overt heart failure in patients with conditions, or undergoing treatments, that increase the risk of LV dysfunction, such as diabetes mellitus, hypertension and some chemotherapy treatments. Moreover, STS may assist in differentiation of aetiology in patients with increased LV wall thickness, as well as assisting with better timing of surgery for patients with valvular disease.
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Wang et al. (2020) studied this question.
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