Key result
Speckle-tracking during pacing stress echocardiography detects early ischemia via global longitudinal strain reduction to ~17%.
Case Report (n=1)
No
Speckle-tracking during transesophageal atrial pacing stress echocardiography is feasible and may detect ischemic myocardial deformation changes in regions without visible wall motion abnormalities.
Speckle-tracking strain may enable earlier ischemia detection during paced stress echo; leaves open validation in prospective cohorts before any practice change.
The article describes a clinical case of registration of longitudinal systolic deformation of the left ventricle using speckle-t racking technology during stress- echocardiography with transesophageal atrial pacing in a patient with coronary heart disease. A feature of the clinical case is the identification of changes in the longitudinal deformation of the left ventricular not only in the zone of visible local disturbances of myocardial contractility, but also in other zones, followed by the identification of hemodynamically significant stenoses of the coronary arteries, which supply the zones with defective longitudinal deformation of left ventricular, but without visible local disturbances of myocardial contractility. The presented case shows the prospects of using the evaluation of left ventricular deformation indicators during stress echocardiography with transesophageal atrial pacing.
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Antonova et al. (2023) conducted a case report in Coronary heart disease (n=1). Speckle-tracking transesophageal atrial pacing stress echocardiography was evaluated on Longitudinal systolic deformation of the left ventricle. Speckle-tracking during transesophageal atrial pacing stress echocardiography identified ischemia before visible contractility changes by detecting a drop in global longitudinal strain to 16.7%.
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