Kwon Y, et al. - Given the reported association of sleep-disordered breathing (SDB) with sudden cardiac death (SCD), and relationship between abnormal QRS-T angle (a novel electrocardiographic marker of ventricular repolarization) and adverse cardiovascular outcomes, including SCD, researchers theorized that patients with SDB have more obvious abnormality in QRS-T angle. They performed this cross-sectional analysis from the Multi-Ethnic Study of Atherosclerosis (MESA) Exam Sleep ancillary study to test the validity of this theory. In a racially/ethnically diverse community cohort, they found that severity of SDB and abnormal ventricular repolarization as measured by QRS-T angle was linked.