Houck CA, Lanters EA, Heida A, et al. JACC Clin Electrophysiol. 2020 May;6(5):537-548. doi: 10.1016/j.jacep.2019.12.009 PMID: 32439038 Take Home Points: Patients with long-standing left-to-right shunts related to atrial septal defects (ASD) have significant...