QTc prolongation as a marker of 30-day serious outcomes in older patients with syncope presenting to the Emergency Department

Jennifer L. White, Anna Marie Chang, Judd E. Hollander, Erica Su, Robert E. Weiss, Annick N. Yagapen, Susan E. Malveau, David H. Adler, Aveh Bastani, Christopher W. Baugh, Jeffrey M. Caterino, Carol L. Clark, Deborah B. Diercks, Bret A. Nicks, Daniel K. Nishijima, Manish N. Shah, Kirk A. Stiffler, Alan B. Storrow, Scott T. Wilber, Benjamin C. Sun