Assessing left atrial volume and function in dyslipidemia patients using three-dimensional speckle tracking imaging

Area of Science:

• Cardiology
• Medical Imaging
• Biomedical Engineering

Background:

• Dyslipidemia is a cardiovascular risk factor that can impair cardiac function early on.
• Traditional ultrasound methods struggle to detect early left atrial (LA) changes.
• Three-dimensional speckle tracking imaging (3D-STI) offers a precise method for evaluating LA function through myocardial motion analysis.

Purpose of the Study:

• To utilize 3D-STI to assess early LA volume and function in patients with various types of dyslipidemia.
• To provide a basis for early clinical intervention in dyslipidemic patients.
• To compare the efficacy of 3D-STI with traditional methods for LA assessment.

Main Methods:

• 102 dyslipidemic patients were categorized into high total cholesterol, high triglyceride, low HDL-C, and mixed dyslipidemia groups.
• Thirty healthy volunteers served as the control group.
• 3D-STI was employed to measure LA volume indices (LAVi_max, LAVi_min, LAVip) and LA function parameters (LAEF, pLAEF, aLAEF), as well as global strain parameters (GLS, GRS, GCS).

Main Results:

• Statistically significant differences (P<0.05) were observed in LAVi_max, LAVi_min, LAVip, LAEF, and pLAEF among the groups.
• Significant differences (P<0.05) were also found in GLS, GCS, and GRS.
• Receiver operating characteristic (ROC) curve analysis indicated that GLS-LAEF had the highest area under the curve (0.796) for identifying dyslipidemia, with 78.40% sensitivity and 70.00% specificity.

Conclusions:

• Dyslipidemia negatively impacts LA volume and function, particularly in mixed dyslipidemia cases.
• 3D-STI is an effective tool for evaluating LA volume and function in patients with different types of dyslipidemia.
• The study highlights the potential of 3D-STI for early detection and intervention in dyslipidemic cardiovascular disease.