TY - JOUR T1 - Importance of three-dimensional speckle tracking in the assessment of left atrial and ventricular dysfunction in patients with myotonic dystrophy type 1 JO - Revista Portuguesa de Cardiologia T2 - AU - Guedes,Henrique AU - Moreno,Nuno AU - dos Santos,Rui Pontes AU - Marques,Leonor AU - Seabra,Daniel AU - Pereira,Adriana AU - Andrade,Aurora AU - Pinto,Paula SN - 08702551 M3 - 10.1016/j.repc.2017.10.011 DO - 10.1016/j.repc.2017.10.011 UR - https://revportcardiol.org/pt-importance-three-dimensional-speckle-tracking-in-articulo-S0870255117303773 AB - Introduction and AimMyotonic dystrophy type 1 (DM1) is a multisystem disease in which cardiac involvement is common. The aim of this study was to identify early changes in left atrial (LA) mechanics and left ventricular (LV) systolic function in patients with myotonic dystrophy type 1 using three-dimensional (3D) speckle tracking echocardiography (3D-STE). MethodsThis observational study included 25 patients with DM1 and 25 healthy volunteers. We assessed LA and LV global strain parameters using 3D-STE. ResultsPatients with DM1 showed significantly lower longitudinal LA strain (22.85%±5.06 vs. 26.82%±5.15; p=0.008 in univariate analysis and p=0.026 in multivariate analysis) and global LV longitudinal strain (-13.55%±1.82 vs. -16.11%±1.33; p<0.001 in univariate analysis and p<0.001 in multivariate analysis), which was not observed with LA area tracking (p=0.412) or LV global circumferential strain (p=0.879), global radial strain (p=0.058), area tracking (p=0.092) or twist (p=0.992). ConclusionLA and LV global longitudinal strain is significantly decreased in patients with DM1, which may be an early marker of subclinical dysfunction in these patients. ER -