
Left Ventricular Rotational Mechanics in Preterm Infants Less Than 29Â Weeks' Gestation over the First Week after Birth
Keywords: پیچ; Torsion; Twist; Preterm; Neonate; Speckle-tracking echocardiography; IQR; Interquartile range; LV; Left ventricular; LVTR; Left ventricular twist rate; LVUTR; Left ventricular untwist rate; PDA; Patent ductus arteriosus; ROI; Region of interest; STE; Spec