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Myocardial deformation in athletes measured with feature tracking cardiovascular magnetic resonance
Session:
Posters (Sessão 5 - Écran 3) - Imagem multimodal 2
Speaker:
Mariana Sousa Paiva
Congress:
CPC 2023
Topic:
B. Imaging
Theme:
03. Imaging
Subtheme:
03.6 Cross-Modality and Multi-Modality Imaging Topics
Session Type:
Pósters Electrónicos
FP Number:
---
Authors:
Mariana Sousa Paiva; Cláudia Silva; Andrés Marcos-Carrión; M. Pilar García-Lopez; M. Pilar Lopez-Lereu; Jose V. Monmeneu; Laura Higueras; António M. Ferreira; Alicia M. Maceira
Abstract
<p><span style="font-size:12pt"><span style="font-family:"Times New Roman",serif"><strong><span style="font-family:"Minion Pro",serif">Background: </span></strong></span></span></p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:"Times New Roman",serif"><span style="font-family:"Minion Pro",serif">Morphological changes of the heart associated with exercise are well studied. However, changes in myocardial mechanics of athlete’s heart are less understood. The aim of this study was to compare myocardial deformation parameters in athletes and controls, using feature tracking cardiac magnetic resonance (FT- CMR). </span></span></span></p> <p> </p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:"Times New Roman",serif"><strong><span style="font-family:"Minion Pro",serif">Methods</span></strong><span style="font-family:"Minion Pro",serif">: </span></span></span></p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:"Times New Roman",serif"><span style="color:black">Single-center retrospective cohort including athletes and age-matched healthy controls that underwent</span><span style="font-family:"Minion Pro",serif"> CMR at 1.5T and 3 T. CMR-FT was used to measure longitudinal, circumferential and radial strain and strain rates of both ventricles. Left ventricle (LV) longitudinal, circumferential and radial dyssynchrony index (L-SDI, C-SDI and R-CDI, respectively) was calculated as the standard deviation of the calculated time to peak strain percentages of the cardiac cycle with segmental strain analysis. </span></span></span></p> <p> </p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:"Times New Roman",serif"><strong><span style="font-family:"Minion Pro",serif">Results: </span></strong></span></span></p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:"Times New Roman",serif"><span style="font-family:"Minion Pro",serif">Overall, 73 athletes (mean age 31</span><span style="font-family:Symbol">±</span><span style="font-family:"Minion Pro",serif">12 years, 69% male, 5% with low intensity exercise training, 44% with medium intensity and 39% with high intensity training) were included. </span></span></span></p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:"Times New Roman",serif"><span style="font-family:"Minion Pro",serif">In comparison to the control subjects, athletes revealed lower left and right ventricle global longitudinal strain (-14.24% vs. -13.31%, p = 0.03, and -18.12% vs. -15.95% p = 0.01, respectively) and right ventricular (RV) global radial strain (19.28 vs 15.74, p < 0.05) – figure 1A and 1B. There were no significant differences in LV global radial and circumferential strain. LV longitudinal, radial and circumferential systolic strain rate were also lower in athletes compared to controls (-0.69 s<sup>-1</sup> vs. -0.78 s<sup>-1</sup>, p=0.04; 1.35 s<sup>-1</sup> vs. 1.50 s<sup>-1</sup>, p=0.03: -0.92 s<sup>-1 </sup>vs -0.98 s<sup>-1</sup>, p=0.05, respectively). Regarding LV dyssynchrony index, we found no significant difference for L-SDI (10.76% vs. 10.72%, p=0.956), but athletes group showed lower C-SDI and R-SDI values (5.99% vs 4.84%, p=0.006, and 5.53% vs 4.47%, p=0.002). </span></span></span></p> <p style="text-align:justify"> </p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:"Times New Roman",serif"><strong><span style="font-family:"Minion Pro",serif">Conclusion</span></strong><span style="font-family:"Minion Pro",serif">: </span></span></span></p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:"Times New Roman",serif"><span style="font-family:"Minion Pro",serif">Our study revealed attenuation of biventricular strain values and lower circumferential and radial LV dyssynchrony indexes in athletes, compared with healthy controls. We hypothesize that these differences may be related with exercise physiologic cardiac adaptations. </span></span></span></p>
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