KHẢO SÁT TỈ LỆ HUYẾT KHỐI TIỂU NHĨ TRÁI TRÊN SIÊU ÂM TIM QUA THỰC QUẢN Ở NGƯỜI CAO TUỔI RUNG NHĨ

Abstract

Objectives: To determining the rate of left atrial appendage thrombus in elderly patients and investigating the clinical and subclinical characteristics between the two groups with and without left atrial appendage thrombus. The correlation between echocardiography and left atrial appendage thrombus also be investigated. Methods A cross - sectional descriptive study on patients undergoing transesophageal echocardiography at the Cardiology Department – Thong Nhat Hospital from November 2022 to June 2023. Results: The study was conducted on 103 elderly patients with an average age of 71.22 ± 7.56, the proportion of men was 58.3%, the frequency of left atrial appendage thrombus on transesophageal echocardiography is 24.3%. In the category of patients with left atrial appendage thrombus, the left atrial diameter was larger and the spontaneous echo contract in left atrial appendage/left atrial was significantly higher than in the group without left atrial appendage thrombus. Multivariable logistic regression revealed that the left atrial appendage velocity was lower in the group with thrombus with OR = 0.0001; 95% CI: 0.0000003 – 0.02; p < 0.001. Conclusion: The frequency of left atrial appendage thrombus in the elderly with atrial fibrillation is still high, it is necessary to perform transesophageal echocardiography standardly to detect and treat properly before performing ablation. More careful investigation of thrombus if there are signs of left atrial dilatation, spontaneous echo contract, especially low-flow of left atrial appendage velocities.