Detection of right ventricular dysfunction by three - dimensional echocardiography and two - dimensional speckle tracking in breast cancer patients receiving anthracycline- based chemotherapy.
Wafaa S El-Sherbeny, Nesreen M Sabry, Shaimaa B El-Saied, Basma Elnagar
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引用次数: 2
Abstract
Background: Despite the cardiotoxic effect of anthracycline on the left ventricle (LV) was totally identified. The assessment of the anthracycline effect on the right ventricle(RV) by conventional echocardiography was a challenge due to its complex geometry. We aimed to evaluate the impact of anthracycline on the RV volume and function using 3 dimensional -echocardiography (3DE) and 2 dimensional -speckle tracking echocardiography (2D-STE) in patients with breast cancer.
Methods: This prospective study was conducted on 66 female patients with breast cancer receiving anthracycline chemotherapy, in addition to full echocardiography, 2D-STE and 3DE evaluation of RV function and volume were done at baseline, after 4th cycle of chemotherapy, six and nine months after the end of chemotherapy.
Results: Cardiotoxicity from anthracycline occurred in 18 patients whose LV ejection fraction became significantly reduced after 9 months of therapy according to that, the patients were divided into the non-cardiotoxic group (n:48) and the cardiotoxic group (n:18). At cardiotoxic group, 3D RV end-systolic volume, and 3D RV end-diastolic volume increased significantly at 6 months and continued till 9 months after the therapy end compared to baseline values (42.50 ± 5.98 vs. 50.44 ± 7.01, p = 0.005) and (86.78 ± 9.16 vs. 95.78 ± 9.23, p = 0.021).LV global longitudinal strain (GLS) showed a significant reduction early after 6 months of therapy, 2D GLS and free wall longitudinal strain (FWLS) of RV were significantly decreased at 6 months and continued till 9 months after therapy (-22.54 ± 0.79 vs. -19.53 ± 1.32, p = 0.001) and (-24.67 ± 1.27vs. -22.22 ± 1.41, p = 0.001) respectively. The variation of RV FWLS was a predictor of cardiotoxicity, the relative drop of RV FWLS > 19.3% had 83% sensitivity and 71% specificity, (AUC = 0.82) to identify patients who developed cardiotoxicity.
Conclusion: 3DE is a promising modality in recognizing the early changes in RV volumes and minute alteration in RV function and 2D-STE is a reliable predictor of RV systolic dysfunction which identify the subclinical affliction.