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Prognostic potential of layer-specific global longitudinal strain in patients with non-ST-segment elevated acute coronary syndrome and preserved left ventricular ejection fraction

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Abstract

This study sought to investigate the prognostic potential of layer-specific global longitudinal strain (GLS) in predicting cardiac events among non-ST-segment elevated acute coronary syndrome (NSTE-ACS) patients with preserved LVEF. In this prospective study, we enrolled 160 consecutive NSTE-ACS patients with preserved LVEF (≥ 50%) who underwent successful percutaneous coronary intervention (PCI). Transthoracic two-dimensional echocardiography examinations were performed within 48 h of admission (before PCI). Cardiac events were defined as all-cause death, re-infarction, and hospitalization for heart failure. During a median follow-up of 30.2 months, 23 patients (14.4%) developed cardiac events. GLS for all three myocardial layers were reduced in patients with adverse outcome (all P < 0.001). Yet GLSendo (area under curves = 0.85) and GLSmid (area under curves = 0.83) showed relatively higher predictive power than GLSepi when identifying patients with cardiac events. The best cut-off value of GLSendo was − 20.8%, with a diagnostic sensitivity and specificity of 87% and 71% respectively. A significant increase in the risk of cardiac events development was shown among patients with impaired layer GLS (log-rank test, P < 0.001). In conclusion, NSTE-ACS patients with preserved LVEF, layer GLS assessed before PCI all had good abilities to predict cardiac events, which might provide more prognostic information against conventional echocardiographic risk factors.

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Funding

The study was funded by the National Natural Science Foundation of China (Grant No. 81571681, No. 81671762, No. 81701707, No. 81701720).

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Concept/design: J-wT and CL; Data analysis/interpretation: S-qJ, JL, Z-zW, X-pL, G-qD, Y-jL, B-bZ, Z-gD; Drafting article: CL; Critical revision of article: CL; Approval of article: J-wT; Statistics, CL, JL, Z-gD; Funding secured by S-qJ, Z-zW, X-pL, G-qD, Y-jL; Data collection: S-qJ, JL, Z-zW, X-pL, G-qD, Y-jL.

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Correspondence to Jia-wei Tian.

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Liu, C., Jiang, Sq., Li, J. et al. Prognostic potential of layer-specific global longitudinal strain in patients with non-ST-segment elevated acute coronary syndrome and preserved left ventricular ejection fraction. Int J Cardiovasc Imaging 37, 1301–1309 (2021). https://doi.org/10.1007/s10554-020-02119-6

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  • DOI: https://doi.org/10.1007/s10554-020-02119-6

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