LAA：左心房面积

“左心房面积”是心脏结构评估中的一项关键指标，在医学报告中常被缩写为LAA。这一术语广泛应用于临床诊疗、医学影像及科研领域，用以直观地反映左心房的大小与功能状态。使用LAA这一缩写有助于简化书写流程，提高信息记录和传递的效率，特别适用于病历书写、学术论文及多学科协作场景。

Left atrial area and transverse diameter, mitral regurgitation area, left ventricular ejection fraction and pulmonary artery systolic pressure did not differ between the two groups.
两组左心房面积(LAA)、左心房左右径、二尖瓣反流面积、左心室射血分数、肺动脉收缩压无显著差异。
Conclusion : Contrast medium blush in left atrial area during coronary angiography is a reliable sign for detecting left atrial thrombus formation in mitral valve disease.
结论：二尖瓣病变患者行冠状动脉造影时左房区造影剂染色是诊断左房血栓较为可靠的征象。
Assessment of left ventricular diastolic dysfunction using acoustic quantification measuring left atrial area change
应用声学定量检测左心房面积(LAA)评价冠心病患者左心室舒张功能
Left atrial fractional area change ( FAC ) and fractional volume change ( FVC ) during atrial systole were calculated.
并与左房收缩时左房面积改变分数（FAC）和容积改变分数（FVC）作相关性研究。
Patients with thrombus had a higher incidence of atrial fibrillalion ( Af ) and left atrial spontaneous echo contrast ( SEC ), and had smaller mitral valve area ( MVA ) and no significant mitral regurgitation.
血栓形成组心房纤颤及左房自发显影发生率高，二尖瓣口面积较小且无明显二尖瓣返流。

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