AI Article Synopsis
- The study aimed to assess the effectiveness of 2D-STI and RT-3DE imaging techniques in evaluating structural and functional changes in the left atrium of patients with paroxysmal atrial fibrillation after undergoing radiofrequency catheter ablation.
- A total of 44 PAF patients and 32 healthy controls were examined, comparing echocardiographic parameters like left atrial dimensions, volumes, and ejection fractions before and at various intervals after the procedure.
- Results showed that PAF patients had initially larger left atrial sizes and lower efficiency, but significant improvements in LA function and measurements were observed up to 6 months post-ablation, highlighting the usefulness of these imaging methods for treatment monitoring.
Article Abstract
Introduction: The aim of this study was to evaluate the utility of 2D-STI and real-time three-dimensional echocardiography (RT-3DE) in assessing changes in left atrial (LA) structure and function in patients with paroxysmal atrial fibrillation (PAF) post-radiofrequency catheter ablation (RFCA).
Methods: A retrospective analysis was conducted on 44 PAF patients who underwent RFCA at BA Hospital from March 2022 to March 2023. An age- and gender-matched control group of 32 healthy individuals was also included. Comprehensive echocardiographic parameters including LA dimensions (LAAPD, LALRD), volumes (LAVmin, LAVmax), ejection fraction (LAEF), and tissue velocities (a', Ar) were compared between groups. Post-RFCA changes in these parameters were also assessed at 1, 3, and 6 months.
Results: Pre-RFCA, PAF patients demonstrated larger LA dimensions and volumes with reduced LAEF and tissue velocities compared to controls. Post-RFCA, there was a significant improvement in LAEF and left ventricular ejection fraction at 1, 3, and 6 months, with the most pronounced changes observed at 6 months. LA dimensions increased initially but then decreased from 1 to 6 months post-RFCA. Notably, strain rate (SRS, SRE, SRA) measurements in various LA segments improved progressively, with the most significant enhancements at 6 months, suggesting improved atrial mechanics.
Conclusion: The application of 2D-STI and RT-3DE provides a quantitative means to evaluate the structural and functional changes in the LA of PAF patients following RFCA. The progressive improvements in LA dimensions, volumes, and strain measurements up to 6-month post-RFCA indicate the potential of these techniques in monitoring treatment efficacy and patient recovery.
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| http://dx.doi.org/10.1159/000541247 | DOI Listing |
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