ArticleBMC cardiovascular disorders2026
RT-3DE TEE combined with 2D-STI to evaluate the correlation between left atrial and left auricular function and stroke in patients with non-valvular atrial fibrillation: a clinical investigation.
Article in BMC cardiovascular disorders, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
aimNon-valvular atrial fibrillation (NVAF) serves as the primary cause of cardiogenic embolic stroke (CES), and the recurrence rate and mortality of CES are on an annual upward trend. The objective is to explore the structural and functional changes of the left atrial (LA) and left atrial appendage (LAA) in patients with NVAF by means of real-time three-dimensional transesophageal echocardiography (RT-3D TEE) in combination with two-dimensional speckle tracking imaging (2D-STI), and to identify the risk factors for CES.
methodsA total of 125 patients with NVAF were recruited from our hospital, among whom 55 had CES and 70 did not. Additionally, 96 controls with sinus rhythm were included. General clinical data, as well as transthoracic and transesophageal echocardiographic data, were collected. RT-3D TEE and 2D-STI were employed to assess the structural and functional characteristics of the LA and LAA. Multivariate logistic regression and receiver operating characteristic (ROC) curve analyses were conducted to evaluate the independent risk factors and their predictive value for CES.
resultIn comparison with the control group, both NVAF groups exhibited elevated LA and LAA volumes as well as impaired functional parameters, with more pronounced alterations observed in the CES subgroup. Multivariate logistic regression analysis determined that CHA₂DS₂-VASc ≥ 2, impaired LA reservoir strain (LASr), and an increased LAA maximum volume index (LAAVImax) were independent risk factors for CES. ROC curve analysis indicated that LAAVImax (AUC = 0.803) and LASr (AUC = 0.720) had greater predictive value than CHA₂DS₂-VASc ≥ 2 alone (AUC = 0.685). The combination of all three factors resulted in the highest predictive accuracy (AUC = 0.854).
conclusionNVAF patients with CES showed greater impairment of LA and LAA structure and function. LASr and LAAVImax were independently associated with CES and may improve risk stratification when combined with clinical risk scores.
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